MTS TestSuite Fatigue Templates User Guide 100-256-292 D be certain.
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Contents 1.0 Technical Support 9 1.1.0 How to Get Technical Support........................................................................................................9 1.2.0 Before You Contact MTS................................................................................................................9 1.3.0 If You Contact MTS by Phone......................................................................................................11 1.4.0 Problem Submittal Form in MTS Manuals..............
5.3.1.0 Measure Modulus...........................................................................................................33 5.3.2.0 Strain-Controlled Test....................................................................................................33 5.3.3.0 Strain Test.......................................................................................................................34 5.3.4.0 Reattach Extensometer............................................................................
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template 53 7.1.0 Set Up the Test..............................................................................................................................54 7.1.1.0 High-Cycle Fatigue Load Test Template........................................................................54 7.1.2.0 Set Up a Test...................................................................................................................54 7.1.3.0 Fatigue Specimen Parameters..........
8.2.13.0 Load Test......................................................................................................................73 8.2.14.0 Create a Fatigue Test Report........................................................................................73 8.2.15.0 Test Completion...........................................................................................................73 8.3.0 View Test Results........................................................................................
10.0 ASTM Trapezoidal Strain Template 91 10.1.0 Set Up the Test............................................................................................................................92 10.1.1.0 ASTM Trapezoidal Strain Template Overview............................................................92 10.1.2.0 Set Up a Test.................................................................................................................92 10.1.3.0 Fatigue Specimen Parameters.................................
11.2.10.0 Strain-Controlled Test..............................................................................................110 11.2.11.0 Measure Thermal Strain...........................................................................................111 11.2.12.0 Measure Thermal Modulus.......................................................................................111 11.2.13.0 Ramp to Start Temperature.......................................................................................112 11.2.
1.0 Technical Support 1.1.0 How to Get Technical Support Start with your manuals The manuals supplied by MTS provide most of the information you need to use and maintain your equipment. If your equipment includes software, look for online help and README files that contain additional product information. Technical support methods MTS provides a full range of support services after your system is installed.
Know your site number and system number The site number contains your company number and identifies your equipment type (such as material testing or simulation). The number is typically written on a label on your equipment before the system leaves MTS. If you do not know your MTS site number, contact your sales engineer. Example site number: 571167 When you have more than one MTS system, the system job number identifies your system. You can find your job number in your order paperwork.
• Keyboard enhancers • Print spoolers • Messaging applications 1.3.0 If You Contact MTS by Phone A Call Center agent registers your call before connecting you with a technical support specialist. The agent asks you for your: • Site number • Name • Company name • Company address • Phone number where you can be reached If your issue has a notification number, please provide that number. A new issue will be assigned a unique notification number.
• Write down any specific instructions. After you call MTS logs and tracks all calls to ensure that you receive assistance for your problem or request. If you have questions about the status of your problem or have additional information to report, please contact Technical Support again and provide your original notification number. 1.4.
2.0 Preface 2.1.0 Before You Begin Safety first! Before you use your MTS product or system, read and understand the safety information provided with your system. Improper installation, operation, or maintenance can result in hazardous conditions that can cause severe personal injury or death, or damage to your equipment and specimen. Again, read and understand the safety information provided with your system before you continue.
CAUTION: Caution notices indicate the presence of a hazard with a low level of risk which, if ignored, could cause moderate or minor personal injury or equipment damage, or could endanger test integrity. Other special text conventions Important: Important notices provide information about your system that is essential to its proper function. While not safety-related, if the important information is ignored, test results may not be reliable, or your system may not operate properly.
Hypertext links The electronic document has many hypertext links displayed in a blue font. All blue words in the body text, along with all contents entries and index page numbers, are hypertext links. When you click a hypertext link, the application jumps to the corresponding topic.
3.0 Overview Topics: • • Template Overview................................................................................................................................18 Legacy Template Overview....................................................................................................................
3.0 Overview 3.1.0 Template Overview 3.1.1.0 Templates Templates eliminate the need to re-create existing information and provide an easy way to run standard tests. Test templates can come from one of several sources: • An existing test - you open a copy of an existing test and assign it a default name (the original test is not changed). The new test does not contain test runs or analysis runs from the source test.
3.0 Overview Note:Do not rename, move, or change the contents of the Projects or Templates folders outside of the MTS TestSuite applications. To rename an open project, use the Project Summary window in any application. 3.1.2.0 Fatigue Templates Low-Cycle Fatigue (LCF) The following templates are available for LCF tests and analysis: Low-Cycle Fatigue Templates Template Description ASTM LCF Strain This template complies with ASTM standard E606-04 and ASTM standard D3479/D 3479M-96 (Reapproved 2007).
3.0 Overview Transition Test The following templates are available for Transition tests and analysis: Transition Test Templates Template Description Transition Test This template complies with ASTM Standard E 606-04 and ASTM standard D3479/D 3479M-96 (Reapproved 2007). The template is designed to run Transition Tests, analyze the resulting data, and provide reports of the results.
3.0 Overview 3.2.0 Legacy Template Overview 3.2.1.0 Importing Legacy Data Import Legacy Data provides support in MTS TestSuite for data archived from previous software products. The currently supported versions include: • Model 790.20—Low-Cycle Fatigue (LCF), High-Cycle Fatigue (HCF), and Advance Low-Cycle Fatigue (ALC) version 4.2 or later • Model 790.40—Fatigue Crack Growth (FCG) version 4.2 or later • Model 790.
3.0 Overview Item Description Extension The extension indicates the type of test, such as E1820, FCG, or KIC. Import process You can import legacy data in the Multipurpose Elite, Fatigue Analyzer, and Fracture Analyzer applications. If you import legacy data in Multipurpose Elite, you can review the imported data in View Results. You cannot create tests or test runs that you can run in the application.
4.0 Test Setup Topics: • • • • • Open the Controller Station...................................................................................................................24 Prepare Controller Station for Operation...............................................................................................24 Enable Manual Control..........................................................................................................................24 Install Specimen.................................
4.0 Test Setup 4.1.0 Open the Controller Station To open the controller station: 1. Start the Station Manager application. 2. In the Open Station window, select a a configuration file. 3. Click Open to open the configuration file. 4.2.0 Prepare Controller Station for Operation The following procedure provides a basic outline of the steps required to prepare the controller station for specimen installation and test operation. 1. 2. 3. 4. 5. 6. Make sure all sensors are properly calibrated.
4.0 Test Setup Warning: Applying hydraulics can result in sudden actuator motion. A moving actuator can injure anyone in its path. Always clear the actuator area before applying hydraulics. Use the Station Manager’s Station Controls panel for the following steps. a) Click Reset to clear interlocks. If the interlock remains on, use the Message Logs window to identify and correct the cause of the interlock. b) Click HPU Power Low, and then click HPU Power High.
4.0 Test Setup 4.5.0 Disable Manual Control To disable manual control of the Station Manager controller: 1. In the Station Manager application, click Manual Command button in the Station Controls panel. The Manual Command window opens. 2. Deselect the Enable Manual Command check box and close the window. 3. Turn off hydraulics in the Station Manager application. a) Click HSM Power Off. b) Click HPU Power Off.
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template Topics: • • • • • Set Up the Test......................................................................................................................................28 Define Test Parameters.........................................................................................................................30 Run the Test......................................................................................................................................
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template 5.1.0 Set Up the Test 5.1.1.0 ASTM Low-Cycle Fatigue (LCF) Strain Template The Low-Cycle Strain template applies a small number of high-amplitude cyclic forces to the specimen to determine the maximum load or fatigue life of a material. A variation of the template performs the test at an elevated temperature. Both templates are designed to be in compliance with ASTM standard E606-04 and D3479-07.
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template b) Select a specimen from the Select a Specimen window and then click OK. To create a new specimen click Add a new item. c) Review the variables in the Setup Variables window, modify values as necessary, and then click OK. 3. Apply hydraulic power to the system. a) Reset the interlocks if needed. b) Click the Low, then High, power buttons. 4.
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template Parameter Description Elastic Modulus (E) The value you specify here represents the slope value of the material’s stress-strain curve in the elastic deformation region. Elastic Modulus is a specimen variable that other variables may use in a calculation. Yield Strength Specify the stress value at which permanent deformation occurs. Yield Strength is a specimen variable that other variables may use in a calculation.
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template Item Description Crack Initiation Change Specify a percentage that is used to calculate the stable load range and crack initiation. Load Failure Change Percent Specify a percentage that is used to calculate the stable load range and specimen failure. Peak Level Control Change Specify a percentage that is used to calculate if the control peak or valley occurs outside the control range.
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template 5.2.4.0 Extensometer Calibration Extensometer verification Extensometer calibration ensures accurate data collection. You should verify the extensometer calibration before performing any testing. To verify extensometer calibration, set the system to load control and ramp to zero load. At zero load, the strain extensometer is zeroed. An extensometer includes a strain gage. You should verify its calibration before you run a test.
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template The Strain Full Scale window appears. 6. You may want to set this value to 0.1 and click OK. The Extensometer Verification Prompt window appears. 7. Click to repeat the extensometer verification or click No to continue. 5.2.6.0 Modulus Check at Start Temperature You should perform a modulus check before you run a test. The standard template allows you to check the modulus at start temperature and test temperature (for elevated temperature tests).
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template Cycle 0 (zero) The application collects data for each complete cycle. A cycle starts at mean level and ends at mean level. In most cases, mean level is zero. For cases where mean level is not zero, a ramp initially occurs to mean level before the test actually starts. The application stores the data collected during this initial ramp in cycle count 0. Stable cycle determination The application identifies the stable cycle based on user-entered parameters.
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template 1. Click Strain Test. The MTS TestSuite Custom Message window appears with the message: Validate test parameter on runtime display. Click Run Test to start testing. Click Change Parameters to go back and change any parameters. 2. Click Run Test to start the test. A message appears: Click the Run button to start the Strain test. 3. Click the Run button. The Run button changes color. 4.
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template 5.4.1.0 Fatigue Test Results The Test Results show the following information about the test run: • Variable Summary shows all the parameters and their last values for the test run. • History shows minimum-maximum or peak-valley cycle data in relation to time or an index, such as a data group, data point, or cycle number. The Y-axis presents data values and the X-axis presents index values. You can select variables for the chart after the test is done.
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template • Strain • Displacement Cycle Variables Table The Cycle Variables table contains information about cycle variables. If the value is modified during analysis, a check mark appears in the Modified column and the value in the Value column differs from the value in the Original Value column. Modified values do not replace, change, or remove original test results data. Variable Table The Variable table contains information about test variables.
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template Summary Data Table The Summary Data table provides the final values of the variables defined in the Variable Editor. You can change one or more values in this table and rerun the calculations in the same way described for the Analysis Inputs table. After you refresh the values, the ones you modified have check marks in the Modified column. The original test data is not lost and does not change.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template Topics: • • • • • Set Up the Test......................................................................................................................................40 Define Test Parameters.........................................................................................................................42 Run the Test........................................................................................................................
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template 6.1.0 Set Up the Test 6.1.1.0 ASTM Low-Cycle Fatigue (LCF) Strain Template The Low-Cycle Strain template applies a small number of high-amplitude cyclic forces to the specimen to determine the maximum load or fatigue life of a material. A variation of the template performs the test at an elevated temperature. Both templates are designed to be in compliance with ASTM standard E606-04 and D3479-07.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template b) Select a specimen from the Select a Specimen window and then click OK. To create a new specimen click Add a new item. c) Review the variables in the Setup Variables window, modify values as necessary, and then click OK. 3. Apply hydraulic power to the system. a) Reset the interlocks if needed. b) Click the Low, then High, power buttons. 4.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template Parameter Description Elastic Modulus (E) The value you specify here represents the slope value of the material’s stress-strain curve in the elastic deformation region. Elastic Modulus is a specimen variable that other variables may use in a calculation. Yield Strength Specify the stress value at which permanent deformation occurs. Yield Strength is a specimen variable that other variables may use in a calculation.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template • Cycle frequency The application checks the values you enter to make sure they are within the system capabilities. 6.2.3.0 Strain Termination Parameters Strain Termination Parameters Item Description Cycles for Stable Specify the number of cycles after which the Cycle specimen is assumed to be stable and beyond cyclic hardening or softening. Stable Cycle Percent Specify a percentage that is used to calculate peak-valley stability.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template Item Description Time Cycles Per Log Decade Stored Sets the number of cycles of time data per decade based on a logarithm to save to disk. Number of Levels Sets the number of levels between saves to disk. Strain Noise Band Sets the range the data must exceed to detect the Percent peak-valley data. Within this range, points are considered noise and not peak or valley data.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template 6.2.6.0 Verify the Extensometer To verify the extensometer in the LCFS test: 1. Click Extensometer Verification in the Low-Cycle Fatigue Strain test. A message appears: Click the Run button on the control panel to start the extensometer verification. 2. Click the Run button. The Run button changes color and a message appears: Put the Extensometer in the zero position. Click OK when ready. 3.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template The MTS TestSuite Input Parameters window prompts you to enter a load value to ramp to for a modulus check. 2. Enter a load value and click OK. 3. Click the Run button. 4. A window appears with the Modulus Check Result. • Click Accept to accept the result. • Click Reject to discard the result. • Click Measure Modulus to perform the modulus check again. • Click View Data Report to see the results in report form. 6.3.4.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template 6.3.7.0 Ramp to Start Temperature The Ramp to Start Temperature button prompts you to confirm the ramp to start temperature. Click Yes to start the ramp or click No to prevent the ramp. Click Run to start the ramp. After the ramp is started, if you click Stop to end the ramp, another ramp occurs to cool the specimen. 6.3.8.0 Strain-Controlled Test A typical low-cycle fatigue (LCF) test sequence includes: 1.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template displacement for failure detection. When the stability reference cycle is reached, the test compares the peak displacements to this cycle to determine if the test should be terminated due to specimen failure. Crack initiation determination After a stable cycle is identified, each subsequent cycle is compared to the stable cycle.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template 6.3.12.0 Test Completion When the test is complete, the test stops and you can run the reports. A variety of reporting options satisfy the standard reporting requirements. When you have generated the reports, you can end the test by clicking Done. When you have ended the test, you cannot continue to cycle the test or generate reports without the Reporter Add-In for Excel. 6.4.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template Inelastic Strain Minimum-Maximum Table The Inelastic Strain Min Max table contains the measured and calculated minimum and maximum inelastic strain values. The table also contains the measured plastic strain range.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template Channels by Time Table The Channels by Time table lists all data points collected in arrays during Data Acquisition activities. Click the drop-down button to select the Data Acquisition activity. Specify the cycle by clicking on the Numeric or Variable button and select one or more cycle numbers or variables.
6.0 ASTM Low-Cycle Fatigue (LCF) Elevated Temperature Template Chart Type Description Loading Unloading Shows traces of the stress in relation to strain with markers to indicate the loading and unloading start and end. Stress vs. Inelastic Strain Shows traces of stress in relation to inelastic strain for the third cycle, half-life cycle timed, and the last strain cycle. Inelastic Strain Minimum-Maximum Shows traces for minimum and maximum calculated values for the inelastic strain.
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template Topics: • • • • Set Up the Test......................................................................................................................................54 Run the Test...........................................................................................................................................56 View Test Results.......................................................................................................................
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template 7.1.0 Set Up the Test 7.1.1.0 High-Cycle Fatigue Load Test Template The High-Cycle Fatigue (HCF) Load Test performs a load-control test sequence to identify the fatigue life of a material. A typical high-cycle under-load-control test includes: 1. Identify a stable cycle for comparison to other test values. 2. Start the test cycle count, start test data collection, and perform the test to completion.
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template 1. Create a new test from a template. a) Click File > New > Test from Template. b) In the Create from Existing Test window, select a test. c) Click OK. The new test is automatically created and assigned a default name. You can change the name and enter comments about the new test by clicking the Edit button and making the changes. 2. Create a new test run. a) Click New Test Run button.
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template Parameter Description Thickness Rectangular Specimens Specify the thickness of the reduced cross-sectional area on the specimen. Thickness is a specimen variable that other variables may use in a calculation. Extensometer Gage Specify the length on the specimen that has the Length (L) reduced cross-sectional area. Extensometer Gage Length is a specimen variable that other variables may use in a calculation.
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template 7.2.2.0 Load Termination Parameters Load Termination Parameters Item Description Total Cycles Specify a number of cycles for the maximum length of the test. Cycles for Stable Specify a number of cycles after which the specimen Cycle is expected to be stable and beyond hardening or softening. Stable Cycle Percent Specify a percentage used to calculate stability.
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template Item Description example, if this parameter is 100, data is saved to disk every 100 cycles. Starting Cycles Sets the number of cycles to save to disk at the beginning of the test or when the test is started. Time Cycles Per Log Decade Stored Sets the number of cycles of time data per decade based on a logarithm to save to disk. Number of Levels Sets the number of levels between saves to disk.
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template First, a specific output of the conditioner is adjusted to a specific displacement of the transducer. This is performed by adjusting the excitation voltage and amplification (gain) of the conditioner. The second step verifies the output of the transducer conditioner versus a known standard displacement over the entire range of measurement. 7.2.6.0 Verify the Extensometer To verify the extensometer in the LCFS test: 1.
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template 7.2.8.0 Load Test 1. Click Load Test. The MTS TestSuite Custom Message window appears with the message: Validate test parameter on runtime display. Click Run Test to start testing. Click Change Parameters to go back and change any parameters. 2. Click Run Test to start the test. A message appears: Click the Run button to start the Strain test. 3. Click the Run button. The Run button changes color. 4.
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template • History shows minimum-maximum or peak-valley cycle data in relation to time or an index, such as a data group, data point, or cycle number. The Y-axis presents data values and the X-axis presents index values. You can select variables for the chart after the test is done. • Hysteresis shows the cyclic or group data produced during a test cycle. You can select variables for the chart after the test is done.
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template • Dimension • Array • Calculation Modified values do not replace, change, or remove original test results data. Channels by Time Table The Channels by Time table lists all data points collected in arrays during Data Acquisition activities. Click the drop-down button to select the Data Acquisition activity. Specify the cycle by clicking on the Numeric or Variable button and select one or more cycle numbers or variables.
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template • Open the test in the Multipurpose Elite application and on the Tools menu, click Fatigue Analyzer or Fracture Analyzer. The selected Analyzer application opens the test. For more information See the Fatigue Analyzer User Guide for information on how to create an analysis run.
8.0 Transition Test Template Topics: • • • • Set Up the Test......................................................................................................................................66 Run the Test...........................................................................................................................................68 View Test Results...................................................................................................................................
8.0 Transition Test Template 8.1.0 Set Up the Test 8.1.1.0 Transition Test Template Overview The Transition Test template provides procedural steps that allow you to perform a low-cycle fatigue (LCF) strain-controlled test with a transition to a high-cycle fatigue (HCF) load-controlled test. 8.1.2.0 Set Up a Test To create and run a new test: 1. Create a new test from a template. a) Click File > New > Test from Template. b) In the Create from Existing Test window, select a test. c) Click OK.
8.0 Transition Test Template Parameter Description Outer Diameter Hollow Round Specimens Specify the outer diameter of the reduced cross-sectional area on the specimen. Inner Diameter Hollow round Specimens Specify the inner diameter of the reduced cross-sectional area on the specimen. Outer Diameter is a specimen variable that other variables may use in a calculation. Inner Diameter is a specimen variable that other variables may use in a calculation.
8.0 Transition Test Template 8.2.0 Run the Test 8.2.1.0 Strain Test Parameters Strain test parameters are entries you make to control the strain test. For tests that use a sine wave command, strain test parameters include: • End level 1 • End level 2 • Cycle frequency The application checks the values you enter to make sure they are within the system capabilities. 8.2.2.
8.0 Transition Test Template 8.2.3.0 Data Storage Parameters Data Storage Parameters Properties Item Description Ending Cycles Sets the number of cycles to save to disk at the end of the test or when the test stops. Load Storage Change Sets the amount of change that must occur in the maximum load between saves to disk. PV Nth Cycle Stored Sets the value of N, which is the rate (number) of peak-valley cycles for a store to disk to occur.
8.0 Transition Test Template Item Description Crack Initiation Change Specify a percentage that is used to calculate the stable strain range and crack initiation. Load Failure Change Percent Specify a percentage that is used to calculate the stable load range and specimen failure. Peak Load Level Control Change Specify a percentage that is used to calculate if the load control peak occurs outside the control range. 8.2.5.
8.0 Transition Test Template 8.2.7.0 Extensometer Calibration Extensometer verification Extensometer calibration ensures accurate data collection. You should verify the extensometer calibration before performing any testing. To verify extensometer calibration, set the system to load control and ramp to zero load. At zero load, the strain extensometer is zeroed. An extensometer includes a strain gage. You should verify its calibration before you run a test.
8.0 Transition Test Template The Strain Full Scale window appears. 6. You may want to set this value to 0.1 and click OK. The Extensometer Verification Prompt window appears. 7. Click to repeat the extensometer verification or click No to continue. 8.2.9.0 Modulus Check at Start Temperature You should perform a modulus check before you run a test. The standard template allows you to check the modulus at start temperature and test temperature (for elevated temperature tests).
8.0 Transition Test Template 8.2.12.0 Reattach Extensometer If the test stops and you want to resume it, you must reattach the extensometer. On the main menu, click Reattach Extensometer. A window appears that shows the End of Test Readings and the Mean Load Test Readings settings and limits.You can click Verify Settings to see the strain and load readings again or Cancel to return to the main menu. 8.2.13.0 Load Test 1. Click Load Test.
8.0 Transition Test Template 2. Click Results. 3. Click on the different tabs to view different types of results. 8.3.1.0 Fatigue Test Results The Test Results show the following information about the test run: • Variable Summary shows all the parameters and their last values for the test run. • History shows minimum-maximum or peak-valley cycle data in relation to time or an index, such as a data group, data point, or cycle number. The Y-axis presents data values and the X-axis presents index values.
8.0 Transition Test Template • Load • Stress • Strain • Displacement Cycle Variables Table The Cycle Variables table contains information about cycle variables. If the value is modified during analysis, a check mark appears in the Modified column and the value in the Value column differs from the value in the Original Value column. Modified values do not replace, change, or remove original test results data. Variable Table The Variable table contains information about test variables.
8.0 Transition Test Template Summary Data Table The Summary Data table provides the final values of the variables defined in the Variable Editor. You can change one or more values in this table and rerun the calculations in the same way described for the Analysis Inputs table. After you refresh the values, the ones you modified have check marks in the Modified column. The original test data is not lost and does not change. Charts The charts provide visual indicators of the data reported in the tables.
9.0 Transition Test Elevated Temperature Template Topics: • • • • Set Up the Test......................................................................................................................................78 Run the Test...........................................................................................................................................80 View Test Results..........................................................................................................................
9.0 Transition Test Elevated Temperature Template 9.1.0 Set Up the Test 9.1.1.0 Transition Test Elevated Temperature Template The Transition Test Elevated Temperature template provides a test that starts with a low-cycle fatigue (LCF) strain-controlled test and adds a load-controlled test at elevated temperature. 9.1.2.0 Set Up a Test To create and run a new test: 1. Create a new test from a template. a) Click File > New > Test from Template. b) In the Create from Existing Test window, select a test.
9.0 Transition Test Elevated Temperature Template Parameter Description Outer Diameter Hollow Round Specimens Specify the outer diameter of the reduced cross-sectional area on the specimen. Inner Diameter Hollow round Specimens Specify the inner diameter of the reduced cross-sectional area on the specimen. Outer Diameter is a specimen variable that other variables may use in a calculation. Inner Diameter is a specimen variable that other variables may use in a calculation.
9.0 Transition Test Elevated Temperature Template 9.2.0 Run the Test 9.2.1.
9.0 Transition Test Elevated Temperature Template Item Description Total Cycles Specify a number of cycles for the maximum length of the test. 9.2.3.0 Data Storage Parameters Data Storage Parameters Properties Item Description Ending Cycles Sets the number of cycles to save to disk at the end of the test or when the test stops. Load Storage Change Sets the amount of change that must occur in the maximum load between saves to disk.
9.0 Transition Test Elevated Temperature Template After an amount of time passes equal to the test time limit minus the transition monitoring minutes, monitoring begins for the following conditions: • Inelastic strain does not exceed the Inelastic strain transition limit. • Maximum stress does not change more than the Max Stress percent change amount. • Stress-A Ratio does not change by more than the Stress-A ratio percent change amount.
9.0 Transition Test Elevated Temperature Template Item Description Cycles for Stable Specify a number of cycles after which the specimen Cycle is expected to be stable and beyond hardening or softening. Stable Cycle Percent Specify a percentage used to calculate stability. Crack Initiation Change Specify a percentage that is used to calculate the stable strain range and crack initiation.
9.0 Transition Test Elevated Temperature Template The second step verifies the output of the transducer conditioner versus a known standard displacement over the entire range of measurement. 9.2.9.0 Verify the Extensometer To verify the extensometer in the LCFS test: 1. Click Extensometer Verification in the Low-Cycle Fatigue Strain test. A message appears: Click the Run button on the control panel to start the extensometer verification. 2. Click the Run button.
9.0 Transition Test Elevated Temperature Template 4. A window appears with the Modulus Check Result. • Click Accept to accept the result. • Click Reject to discard the result. • Click Measure Modulus to perform the modulus check again. • Click View Data Report to see the results in report form. 9.2.13.0 Ramp to Test Temperature The Ramp to Test Temperature button prompts you to confirm the ramp to test temperature. Click Yes to start the ramp or click No to prevent the ramp.
9.0 Transition Test Elevated Temperature Template The MTS TestSuite Custom Message window appears with the message: Validate test parameter on runtime display. Click Run Test to start testing. Click Change Parameters to go back and change any parameters. 2. Click Run Test to start the test. A message appears: Click the Run button to start the Strain test. 3. Click the Run button. The Run button changes color. 4. Click Change Parameters to view the main menu, where you can change parameters and run the test.
9.0 Transition Test Elevated Temperature Template 9.2.21.0 Test Completion When the test is complete, the test stops and you can run the reports. A variety of reporting options satisfy the standard reporting requirements. When you have generated the reports, you can end the test by clicking Done. When you have ended the test, you cannot continue to cycle the test or generate reports without the Reporter Add-In for Excel. 9.3.0 View Test Results After the test run completes, you can view the test results.
9.0 Transition Test Elevated Temperature Template Inelastic Strain Min Max Table The Inelastic Strain Min Max table contains the measured and calculated minimum and maximum inelastic strain values. The table also contains the measured plastic strain range.
9.0 Transition Test Elevated Temperature Template Channels by Time The Channels by Time table lists all data points collected in arrays during Data Acquisition activities. Click the drop-down button to select the data acquisition activity. Specify the cycle by clicking on the Numeric or Variable button and select one or more cycle numbers or variables.
9.0 Transition Test Elevated Temperature Template • Load vs. Time chart shows changes in the load during the test. 9.4.2.0 Analyze the Test Runs Each test that you create from an MTS template contains a default analysis definition that can be used to analyze the test run in either the Fatigue Analyzer or Fracture Analyzer application.
10.0 ASTM Trapezoidal Strain Template Topics: • • • • Set Up the Test......................................................................................................................................92 Run the Test...........................................................................................................................................94 View Test Results...................................................................................................................................
10.0 ASTM Trapezoidal Strain Template 10.1.0 Set Up the Test 10.1.1.0 ASTM Trapezoidal Strain Template Overview The ASTM Trapezoidal Strain template is based on a low-cycle fatigue (LCF) strain-controlled test with a trapezoidal waveform. Some variation occurs in the parameters due to the change in the wave shape. 10.1.2.0 Set Up a Test To create and run a new test: 1. Create a new test from a template. a) Click File > New > Test from Template. b) In the Create from Existing Test window, select a test.
10.0 ASTM Trapezoidal Strain Template Parameter Description Outer Diameter Hollow Round Specimens Specify the outer diameter of the reduced cross-sectional area on the specimen. Inner Diameter Hollow round Specimens Specify the inner diameter of the reduced cross-sectional area on the specimen. Outer Diameter is a specimen variable that other variables may use in a calculation. Inner Diameter is a specimen variable that other variables may use in a calculation.
10.0 ASTM Trapezoidal Strain Template 10.2.0 Run the Test 10.2.1.0 Strain Test Parameters Strain test parameters are entries you make to control the strain test. For tests that use a sine wave command, strain test parameters include: • End level 1 • End level 2 • Cycle frequency The application checks the values you enter to make sure they are within the system capabilities. 10.2.2.
10.0 ASTM Trapezoidal Strain Template 10.2.3.0 Data Storage Parameters Data Storage Parameters Properties Item Description Ending Cycles Sets the number of cycles to save to disk at the end of the test or when the test stops. Load Storage Change Sets the amount of change that must occur in the maximum load between saves to disk. PV Nth Cycle Stored Sets the value of N, which is the rate (number) of peak-valley cycles for a store to disk to occur.
10.0 ASTM Trapezoidal Strain Template Note: With systems that use Series 494 hardware, you can use the HWI Editor application to select the arm of the bridge where the shunt calibration resistor will be applied. A current shunt calibration value, taken before a test, should be compared to the shunt calibration reference value recorded when the sensor was last calibrated.
10.0 ASTM Trapezoidal Strain Template pin from your extensometer, the modulus is incorrect. If you type incorrect specimen dimensions, the modulus is incorrect. 10.2.7.0 Measure Modulus To check the modulus in the LCFS test: 1. Click Measure Modulus. The MTS TestSuite Input Parameters window prompts you to enter a load value to ramp to for a modulus check. 2. Enter a load value and click OK. 3. Click the Run button. 4. A window appears with the Modulus Check Result. • Click Accept to accept the result.
10.0 ASTM Trapezoidal Strain Template the new cycle against which following cycles are compared. Typical stable cycle deviation factors are around 1%. Test completion The LCF test runs until it meets one of the termination criteria. Examples of test termination criteria include: • Non-controlling failure threshold (%) • Peak-valley deviation Non-controlling failure threshold (%) For tests run in strain control, you define a percentage of stable load amplitude to use for failure detection.
10.0 ASTM Trapezoidal Strain Template A window appears that shows the End of Test Readings and the Mean Load Test Readings settings and limits.You can click Verify Settings to see the strain and load readings again or Cancel to return to the main menu. 10.2.11.0 Create a Fatigue Test Report On the test main menu, click Report. The application opens Excel. The Creating Report window shows you the progress as the application creates a report with the test results.
10.0 ASTM Trapezoidal Strain Template 10.4.0 Analyze Data 10.4.1.0 Strain View The template is preconfigured with an analysis definition that conforms to the analysis portion of the ASTM standard. The analysis definition can be used to analyze the test run in either the Fatigue Analyzer or Fracture Analyzer application and contains the following tables and charts.
10.0 ASTM Trapezoidal Strain Template • Unit • Modified • Original Value • Dimension • Array • Calculation Modified values do not replace, change, or remove original test results data. Channels by Time The Channels by Time table lists all data points collected in arrays during Data Acquisition activities. Click the drop-down button to select the data acquisition activity. Specify the cycle by clicking on the Numeric or Variable button and select one or more cycle numbers or variables.
10.0 ASTM Trapezoidal Strain Template • Loading Unloading chart shows traces of the stress in relation to strain with markers to indicate the loading and unloading start and end. • Stress vs. Inelastic Strain chart shows traces of stress in relation to inelastic strain for the third cycle, half-life cycle timed, and the last strain cycle. • Inelastic Strain Min Max chart shows traces for minimum and maximum calculated values for the inelastic strain.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template Topics: • • • • Set Up the Test....................................................................................................................................104 Run the Test.........................................................................................................................................106 View Test Results...................................................................................................................
11.0 ASTM Trapezoidal Strain Elevated Temperature Template 11.1.0 Set Up the Test 11.1.1.0 ASTM Trapezoidal Strain Elevated Temperature Template The ASTM Trapezoidal Strain Elevated Temperature template is based on a low-cycle fatigue (LCF) strain-controlled test with a trapezoidal waveform and elevated temperature. 11.1.2.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template The new test is automatically created and assigned a default name. You can change the name and enter comments about the new test by clicking the Edit button and making the changes. 2. Create a new test run. a) Click New Test Run button. b) Select a specimen from the Select a Specimen window and then click OK. To create a new specimen click Add a new item.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template Parameter Description Extensometer Gage Specify the length on the specimen that has the Length (L) reduced cross-sectional area. Extensometer Gage Length is a specimen variable that other variables may use in a calculation. Elastic Modulus (E) The value you specify here represents the slope value of the material’s stress-strain curve in the elastic deformation region.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template 11.2.2.0 Strain Test Parameters Strain test parameters are entries you make to control the strain test. For tests that use a sine wave command, strain test parameters include: • End level 1 • End level 2 • Cycle frequency The application checks the values you enter to make sure they are within the system capabilities. 11.2.3.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template Item Description Load Storage Change Sets the amount of change that must occur in the maximum load between saves to disk. PV Nth Cycle Stored Sets the value of N, which is the rate (number) of peak-valley cycles for a store to disk to occur. For example, if this parameter is 100, data is saved to disk every 100 cycles. Starting Cycles Sets the number of cycles to save to disk at the beginning of the test or when the test is started.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template Calibration overview The calibration process coordinates the interaction between the transducer, a DC conditioning circuit, and a cable. Calibration of a transducer is a two-step process: First, a specific output of the conditioner is adjusted to a specific displacement of the transducer. This is performed by adjusting the excitation voltage and amplification (gain) of the conditioner.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template 4. A window appears with the Modulus Check Result. • Click Accept to accept the result. • Click Reject to discard the result. • Click Measure Modulus to perform the modulus check again. • Click View Data Report to see the results in report form. 11.2.9.0 Ramp to Test Temperature The Ramp to Test Temperature button prompts you to confirm the ramp to test temperature. Click Yes to start the ramp or click No to prevent the ramp.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template • Peak-valley deviation Non-controlling failure threshold (%) For tests run in strain control, you define a percentage of stable load amplitude to use for failure detection. When the test reaches the stable cycle, the test compares the peak loads with this cycle to determine if the test should be terminated due to specimen failure. For tests run in load control, enter the percentage of stable displacement for failure detection.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template 11.2.13.0 Ramp to Start Temperature The Ramp to Start Temperature button prompts you to confirm the ramp to start temperature. Click Yes to start the ramp or click No to prevent the ramp. Click Run to start the ramp. After the ramp is started, if you click Stop to end the ramp, another ramp occurs to cool the specimen. 11.2.14.0 Strain-Controlled Test A typical low-cycle fatigue (LCF) test sequence includes: 1.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template displacement for failure detection. When the stability reference cycle is reached, the test compares the peak displacements to this cycle to determine if the test should be terminated due to specimen failure. Crack initiation determination After a stable cycle is identified, each subsequent cycle is compared to the stable cycle.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template 11.2.18.0 Test Completion When the test is complete, the test stops and you can run the reports. A variety of reporting options satisfy the standard reporting requirements. When you have generated the reports, you can end the test by clicking Done. When you have ended the test, you cannot continue to cycle the test or generate reports without the Reporter Add-In for Excel. 11.3.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template Inelastic Strain Minimum-Maximum Table The Inelastic Strain Min Max table contains the measured and calculated minimum and maximum inelastic strain values. The table also contains the measured plastic strain range.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template Channels by Time Table The Channels by Time table lists all data points collected in arrays during Data Acquisition activities. Click the drop-down button to select the Data Acquisition activity. Specify the cycle by clicking on the Numeric or Variable button and select one or more cycle numbers or variables.
11.0 ASTM Trapezoidal Strain Elevated Temperature Template Chart Type Description Loading Unloading Shows traces of the stress in relation to strain with markers to indicate the loading and unloading start and end. Stress vs. Inelastic Strain Shows traces of stress in relation to inelastic strain for the third cycle, half-life cycle timed, and the last strain cycle. Inelastic Strain Minimum-Maximum Shows traces for minimum and maximum calculated values for the inelastic strain.
Index A inelastic strain 70, 82 install specimen 25 ASTM D3479/D 3479M-96 (2007) 19 E-466-07 19 E-606-04 20 L D legacy file name 22 load test parameter 56, 70, 82 low-cycle fatigue data storage parameters 31, 43, 57, 69, 81, 95, 107 modulus measurement 33, 45, 59, 72, 84, 97, 109 reattach extensometer 35, 48, 73, 86, 98, 113 strain test 35, 48, 72, 85, 98, 113 test report 35, 48, 60, 73, 86, 99, 113 thermal modulus measurement 46, 85, 111 Low-Cycle Fatigue (LCF) template 19 data file legacy 22 M E
template (continued) legacy 21 Legacy HCF - Displacement 19 low-cycle fatigue 28, 40, 104 Low-Cycle Fatigue 19 transition test 66 Transition Test 20 transition test elevated temperature 78 Transition Test Elevated Temperature 20 trapezoidal strain 92 Trapezoidal Strain 20 test high-cycle load 54 new run 28, 40, 55, 66, 78, 92, 104 test definition from a template 18 transducer calibration 32, 44, 58, 71, 83, 96, 109 transition parameters 70, 81 120 MTS TestSuite Transition Test template 20 Trapezoidal Stra
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