MTS TestSuite Fracture Templates User Guide 100-256-573 F be certain.
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Table of Contents Table of Contents Technical Support How to Get Technical Support.........................................................................................................................7 Before You Contact MTS.................................................................................................................................7 If You Contact MTS by Phone.........................................................................................................................
Table of Contents Assign Precrack Values......................................................................................................................32 Calculator...........................................................................................................................................32 Run the Test....................................................................................................................................................
Table of Contents Analyze the Test Runs........................................................................................................................59 KIC Fracture Toughness Template Set Up the Test...............................................................................................................................................62 KIC Template.....................................................................................................................................
Table of Contents Setpoint/Span Times for Delta-K Control..........................................................................................81 Turn On Hydraulic Power..................................................................................................................82 Perform Crack Size Check.................................................................................................................82 Precrack Specimen.................................................................
Technical Support 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. If you have any questions about a system or product, contact Technical Support in one of the following ways.
Technical Support 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. Example system number: US1.
Technical Support — Messaging applications 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.
Technical Support • 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.
Preface 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. It is very important that you remain aware of hazards that apply to your system.
Preface Warning: Warning notices indicate the presence of a hazard with a medium level of risk which, if ignored, can result in death, severe personal injury, or substantial property damage. 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.
Preface Electronic manual conventions This manual is available as an electronic document in the Portable Document File (PDF) format. It can be viewed on any computer that has Adobe Acrobat Reader installed. 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.
Overview Topics: • • Template Overview............................................................................................................................16 Legacy Template Overview...............................................................................................................
Overview Template Overview 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.
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.
Overview KIC Fracture Toughness Templates Template Description ASTM E 399 KIC This template complies with ASTM Standard E 399 and is designed to determine the plane-strain fracture toughness (KIC) value of materials. Legacy KIC This template is designed to analyze data acquired from tests run with the MTS Model 793.50 KIC Fracture Toughness Test Application.
Overview • High-Cycle Fatigue (HCF) • J-Integral Characterization of Fracture Toughness (JIC) • Linear Elastic Plane-Strain Fracture Toughness of Metallic Materials (KIC) • Low-Cycle Fatigue (LCF) Legacy files Legacy files have a similar naming convention. File names are not case-sensitive: . Legacy File Names Item Description Name The user-supplied name. Data Type Important: You must select the RD file. Only the RD file is processed.
Overview Item Description Files Show the name of the file you select to import, such as FCG_archiverd.FCG. Import Legacy Data Procedure To import legacy data: 1. Click File > Import > Legacy Data. 2. In the Import Legacy Data window, click Select, click the Legacy template for the legacy test type, and click OK. 3. Click Add, navigate to the location of the legacy data files, select the raw data file (nameRD.EXT), and click the Open button. 4. Click OK.
Test Setup Topics: • • • • • • Open the Controller Station...............................................................................................................22 Prepare Controller Station for Operation...........................................................................................22 Crack Opening Displacement (COD) Sensor Signal Polarity............................................................22 Enable Manual Control..................................................................
Test Setup 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. 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.
Test Setup Enable Manual Control To enable manual control of the Station Manager controller: 1. On the Station Manager Station Controls toolbar, click Manual Command. 2. Select the Enable Manual Command check box. 3. Select a control mode. You control the actuator for specimen installation with a control knob on a control panel mounted near the load unit. Select your preference for a control mode, a channel limited channel (CLC) control mode, a load control mode, or a stroke control mode can be used. 4.
Test Setup Warning: Actuator movement can occur when you install a specimen. Unexpected actuator movement can result in personal injury, as your hands will be in a crush zone during this step. Ensure that hydraulic power is turned off before placing your hands near the actuator. Read and understand the safety information in the Safety manual, Series 793 Software manuals, and Load Frame product manuals. 2. 3. 4. 5. Install the specimen in the grips. Zero the control channel sensor output signal.
Fatigue Crack Growth (FCG) Template Topics: • • • • • Set Up the Test..................................................................................................................................26 Define Test Parameters.....................................................................................................................27 Run the Test......................................................................................................................................33 View Test Results.
Fatigue Crack Growth (FCG) Template Set Up the Test Fatigue Crack Growth (FCG) Templates Overview There are two versions of Fatigue Crack Growth templates. Both templates comply with ASTM standard E647-08. • ASTM E 647 Fatigue Crack Growth Compliance • ASTM E 647 Fatigue Crack Growth DCPD The primary difference between the two templates is how the crack size is measured. The compliance template uses a Crack Opening Displacement (COD) clip gage to measure the crack opening.
Fatigue Crack Growth (FCG) 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. c) Review the variables in the Setup Variables window, modify values as necessary, and then click OK. 3.
Fatigue Crack Growth (FCG) Template Parameter Description Precrack Lower Least Squares Fit Percentage Specify the percentage of the measured load range used as the lower limit for linear least squares fit compliance determination. This parameter is not used for FCG DCPD tests. Precrack Upper Least Squares Fit Percentage Specify the percentage of the measured load range used as the upper limit for linear least squares fit compliance determination. This parameter is not used for FCG DCPD tests.
Fatigue Crack Growth (FCG) Template Delta K Control Mode Parameters Delta K Control Mode Parameters Parameter Description FCG Load Ratio Specify the ratio of the minimum to maximum K applied to the specimen. The minimum K is determined by this value and the maximum K is specified by you. FCG Initial - K Max Specify the initial maximum stress intensity (K) value used in Delta-K control. Normalized K Gradient (C) Specify the rate of change to stress intensity as the crack site changes.
Fatigue Crack Growth (FCG) Template Constant Load Control Mode Parameters Constant Load Control Mode Paramters Parameter Description FCG Load Ratio Specify the ratio of the minimum to maximum load applied to the specimen. The minimum load is determined by this value and the maximum load is specified by you. FCG End Level 1 Specify the desired maximum load of the command signal. FCG Frequency Specify the cycle frequency of the command signal.
Fatigue Crack Growth (FCG) Template Parameter Description Store Every Nth Precrack Specify the cycle intervals written to disk Cycle during the precrack activity. Crack Size Change Store Specify the amount of crack length change that will cause data to be stored to disk. Typically, operators will not store every cycle, but will only store data when the crack grows by a significant amount, such as 0.05 mm.
Fatigue Crack Growth (FCG) Template Parameter Description Shut Down Station at End Select Yes to cause an interlock at the end of Test of the test. This can shut down hydraulics, if desired. Assign Precrack Values Specify these parameters if the specimen was precracked on another load frame. When the precrack parameters are specified here, you can then skip Precrack Specimen in the Main Menu window.
Fatigue Crack Growth (FCG) Template Calculate Load P Load P Parameters Parameter Description Crack Size Specify the crack size value to use in the load calculation. Stress Intensity K Specify the stress intensity (K) value to use in the load calculation. Calculate Stress Intensity K Stress Intensity K Parameters Parameter Description Crack Size Specify the crack size value to use in the stress intensity (K) calculation. Load Specify the load value to use in the stress intensity (K) calculation.
Fatigue Crack Growth (FCG) Template Caution: Lower Setpoint/Span Times in the Series 793 Station Manager application can cause specimen or equipment damage. Decreasing the Setpoint/Span Times default of 2.0 seconds after the test run completes can be too fast for other actuator commands, and can cause specimen or equipment damage.
Fatigue Crack Growth (FCG) Template Crack Size Check Parameters Parameter Description Entered Crack Size Specify the crack size used to calculate the elastic modulus. The default value is equal to the specimen notch size. Elastic Modulus Specify the modulus used for crack size calculations. Ramp to Percent Specify the percent of load applied on the specimen in order to check the crack size. The load is ramped from zero to the specified percentage of load.
Fatigue Crack Growth (FCG) Template Parameter Description Initial Crack Load Specify the load level at which the voltage is measured. Use Reference Specimen This option allows testing without a reference specimen. MTS recommends using a reference specimen. However, this is not always possible. 3. Review the parameters. a) Click Yes to start with the parameters that are shown. b) Click No to return to the main menu and to change parameters. 4. Click Run on the control panel to start the activity.
Fatigue Crack Growth (FCG) Template To stop the activity, click Stop. When you stop the activity, the application immediately ramps to zero load and saves the test data. 4. To review the process of the test activity, monitor the runtime displays. 5. Typically, the activity stops when a desired test termination parameter is achieved. In this case, review the activity end result, and then click Close.
Fatigue Crack Growth (FCG) Template View Test Results After the test run completes, you can view the test results. 1. In the Explorer panel, click the name of the test run. 2. Click Results. 3. Click on the different tabs to view different types of results. Fracture 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.
Fatigue Crack Growth (FCG) Template You can add and change values by typing in the table cell. Click another row to activate the Refresh All Analysis Views button, and click the button. The Modified column becomes filled with a check mark in rows where you specify the value. Variable Summary Table The Variable Summary table provides the data output of the test.
Fatigue Crack Growth (FCG) Template may occur if the number of valid points is less than the two times the polynomial fit number plus 1. The number of valid points is used to calculate the Apparent Delta-K Threshold. Invalid data points are not used in calculations. The Apparent Threshold calculation can fail: • The da/DN-Delta K data is not available. • The Least Square Fit limits are outside the range of the da/dN-Delta K data points.
Fatigue Crack Growth (FCG) Template • From either the Fatigue Analyzer or Fracture Analyzer application, click File > Open Test and select the test that you want to analyze. • 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.
JIC Fracture Toughness Template Topics: • • • • • Set Up the Test..................................................................................................................................44 Define Test Parameters.....................................................................................................................45 Run the Test......................................................................................................................................53 View Test Results.....
JIC Fracture Toughness Template Set Up the Test JIC Fracture Toughness Template The MTS ASTM E 1820 JIC template complies with ASTM E-1820-08 for determining the fracture toughness (JIC) value of materials. The JIC template provides all the components you need to run a test, analyze the test data, and create reports of the results.
JIC Fracture Toughness Template 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. 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.
JIC Fracture Toughness Template Parameter Description Precrack Upper Least Squares Fit Percentage Specify the percentage of the measured load range used as the upper limit for linear least squares fit compliance determination. This parameter is not used for FCG DCPD tests. Precrack Measure Load Level Percent Specify the percent of maximum load level at which the voltage is measured. The load is applied at this level to ensure the crack is open.
JIC Fracture Toughness Template Parameter Description JIC Crack Propagation Hold Specify the length of time to hold at constant Time COD or Displacement in the hold crack propagation activity. If this time is zero, the hold crack propagation activity is bypassed. JIC Frame Stiffness Specify the inverse of the compliance of the test system. This term is used to determine the displacement due to load frame deflection and the deformation of fixtures.
JIC Fracture Toughness Template Parameter Description JIC Reload Rate Specify the rate at which the system reloads the specimen to the load value at the beginning of the first unload segment in each step increment. If the ramp rate is invalid for the specimen being tested, the application corrects the value of the ramp rate when you click Run to start the test.
JIC Fracture Toughness Template Parameter Description JIC Crack Propagation Hold Specify the length of time to hold at constant Time COD or Displacement in the hold crack propagation activity. If this time is zero, the hold crack propagation activity is bypassed. JIC Frame Stiffness Specify the inverse of the compliance of the test system. This term is used to determine the displacement due to load frame deflection and the deformation of fixtures.
JIC Fracture Toughness Template Parameter Description JIC Reload Rate Specify the rate at which the system reloads the specimen to the load value at the beginning of the first unload segment in each step increment. If the ramp rate is invalid for the specimen being tested, the application corrects the value of the ramp rate when you click Run to start the test.
JIC Fracture Toughness Template Parameter Description but will only store data when the crack grows by a significant amount, such as 0.05 mm. FCG Lower Least Squares Specify the lower load limit for linear least Fit Percentage squares fit compliance used to determine when to start saving data to disk. This parameter is not used for FCG DCPD tests.
JIC Fracture Toughness Template Precrack Parameters Parameter Description Precrack Cycles Completed Specify the number of precrack cycles completed. Precrack Final Crack Size Specify the final crack size calculated from compliance. Precrack Final P Specify the final load during precrack. Precrack P Maximum Specify the maximum load measured during precrack. Precrack Final K Specify the final K during precrack. Precrack K Maximum Specify the maximum K value during precrack.
JIC Fracture Toughness Template Calculate Stress Intensity K Stress Intensity K Parameters Parameter Description Crack Size Specify the crack size value to use in the stress intensity (K) calculation. Load Specify the load value to use in the stress intensity (K) calculation. Run the Test Setpoint/Span Times for Delta-K Control MTS-supplied fracture test templates calculate setpoint and span values for those portions of a fracture test that use Delta-K control.
JIC Fracture Toughness Template Turn On Hydraulic Power Use the control panel to apply hydraulic power. 1. If the Interlock indicator is on, click Reset to release system interlocks. If the interlock remains on, use the message logs to identify and correct the cause of the interlock. Warning: Applying hydraulic power can result in sudden actuator motion. A moving actuator can injure anyone in its path. Always clear the actuator area before applying hydraulic power. 2. Click Low Power.
JIC Fracture Toughness Template Parameter Description Ramp Time Specify the time to ramp to the target load. 1. Click Measure Crack Size. 2. Click Run on the control panel to start the crack size check. Optionally, if you want to review or change parameters, click Return to Main Menu. 3. When finished with this activity, click Close. Precrack Specimen 1. Click Precrack in the Main Menu window. 2. Click Run on the control panel to start the precrack activity.
JIC Fracture Toughness Template 5. Typically, the activity stops when a desired test termination parameter is achieved. In this case, review the activity end result, and then click Close. Enter Measured Crack Sizes The software automatically enters the crack sizes from the end of the precrack activity and the crack sizes from the end of the test.
JIC Fracture Toughness Template Caution: Lower Setpoint/Span Times in the Series 793 Station Manager application can cause specimen or equipment damage. Decreasing the Setpoint/Span Times default of 2.0 seconds after the test run completes can be too fast for other actuator commands, and can cause specimen or equipment damage.
JIC Fracture Toughness Template Analyze Data JIC Fracture Toughness Analysis Definition 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. Analysis Inputs Table The Analysis Inputs table contains the parameters used for the analysis.
JIC Fracture Toughness Template • Complete Displacement Data • Complete JIC Step Array Charts The charts provide visual indicators of the data reported in the tables. • The Crack Sizes vs. Steps chart indicates as a curve how the crack grows during the load steps. • The Load vs. Time chart indicates changes in the load during the test. • The Displacement vs. Time chart indicates changes in the displacement during the test. • The Load vs.
KIC Fracture Toughness Template Topics: • • • • • Set Up the Test..................................................................................................................................62 Define Test Parameters.....................................................................................................................63 Run the Test......................................................................................................................................67 View Test Results.....
KIC Fracture Toughness Template Set Up the Test KIC Template The MTS ASTM E 399 KIC template complies with ASTM E 399 for determining the fracture toughness (KIC) value of materials. The KIC template provides all the components you need to run a test, analyze the test data, and create reports of the results.
KIC Fracture Toughness Template 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. 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.
KIC Fracture Toughness Template Parameter Description Precrack Upper Least Squares Fit Percentage Specify the percentage of the measured load range used as the upper limit for linear least squares fit compliance determination. This parameter is not used for FCG DCPD tests. Precrack Measure Load Level Percent Specify the percent of maximum load level at which the voltage is measured. The load is applied at this level to ensure the crack is open.
KIC Fracture Toughness Template Parameter Description Typically, operators will not store every cycle, but will only store data when the crack grows by a significant amount, such as 0.05 mm. FCG Lower Least Squares Specify the lower load limit for linear least Fit Percentage squares fit compliance used to determine when to start saving data to disk. This parameter is not used for FCG DCPD tests.
KIC Fracture Toughness Template Precrack Parameters Parameter Description Precrack Cycles Completed Specify the number of precrack cycles completed. Precrack Final Crack Size Specify the final crack size calculated from compliance. Precrack Final P Specify the final load during precrack. Precrack P Maximum Specify the maximum load measured during precrack. Precrack Final K Specify the final K during precrack. Precrack K Maximum Specify the maximum K value during precrack.
KIC Fracture Toughness Template Calculate Stress Intensity K Stress Intensity K Parameters Parameter Description Crack Size Specify the crack size value to use in the stress intensity (K) calculation. Load Specify the load value to use in the stress intensity (K) calculation. Run the Test Setpoint/Span Times for Delta-K Control MTS-supplied fracture test templates calculate setpoint and span values for those portions of a fracture test that use Delta-K control.
KIC Fracture Toughness Template Turn On Hydraulic Power Use the control panel to apply hydraulic power. 1. If the Interlock indicator is on, click Reset to release system interlocks. If the interlock remains on, use the message logs to identify and correct the cause of the interlock. Warning: Applying hydraulic power can result in sudden actuator motion. A moving actuator can injure anyone in its path. Always clear the actuator area before applying hydraulic power. 2. Click Low Power.
KIC Fracture Toughness Template Parameter Description Ramp Time Specify the time to ramp to the target load. 1. Click Measure Crack Size. 2. Click Run on the control panel to start the crack size check. Optionally, if you want to review or change parameters, click Return to Main Menu. 3. When finished with this activity, click Close. Precrack Specimen 1. Click Precrack in the Main Menu window. 2. Click Run on the control panel to start the precrack activity.
KIC Fracture Toughness Template Enter Measured Crack Sizes The software automatically enters the crack sizes from the end of the precrack activity and the crack sizes from the end of the test. By default, the Precrack values are the last series of crack sizes measured during the precrack activity and the Crack values are the last series of crack sizes measured during the test. These crack sizes are used during data analysis. Optionally, you can change these values for the test run.
KIC Fracture Toughness Template 2. Click Results. 3. Click on the different tabs to view different types of results. Fracture 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. • Crack Size Check Cycle - Data Acquisition shows data that was acquired during the crack size check activity. • Precrack Command - Data Acquisition shows data that was acquired during the precrack activity.
KIC Fracture Toughness Template Validity Results Table The Validity Results table includes the Display Name, Value, Modified Indicator, Original Value, and Calculation. The Display Name includes the validity criteria. The Value and Original Value columns contain indicators that are Yes or No values. The validity of the test results can change because of changes in test values. K-R Curve The K-R Curve table provides per-cycle data.
KIC Fracture Toughness Template • From either the Fatigue Analyzer or Fracture Analyzer application, click File > Open Test and select the test that you want to analyze. • 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.
Run the CTOD Fracture Toughness Test Topics: • • • • • Set Up the Test..................................................................................................................................76 Define Test Parameters.....................................................................................................................77 Run the Test......................................................................................................................................
Run the CTOD Fracture Toughness Test Set Up the Test CTOD Fracture Toughness Template The MTS ASTM E1290 CTOD template complies with ASTM E 1290 - 07 for determining the fracture toughness value of materials. The CTOD template provides all the components you need to run a test, analyze the test data, and create reports of the results.
Run the CTOD Fracture Toughness Test 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. 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.
Run the CTOD Fracture Toughness Test Parameter Description Precrack Upper Least Squares Fit Percentage Specify the percentage of the measured load range used as the upper limit for linear least squares fit compliance determination. This parameter is not used for FCG DCPD tests. Precrack Measure Load Level Percent Specify the percent of maximum load level at which the voltage is measured. The load is applied at this level to ensure the crack is open.
Run the CTOD Fracture Toughness Test Parameter Description Crack Size Change Store Specify the amount of crack length change that will cause data to be stored to disk. Typically, operators will not store every cycle, but will only store data when the crack grows by a significant amount, such as 0.05 mm. FCG Lower Least Squares Specify the lower load limit for linear least Fit Percentage squares fit compliance used to determine when to start saving data to disk.
Run the CTOD Fracture Toughness Test Assign Precrack Values Specify these parameters if the specimen was precracked on another load frame. When the precrack parameters are specified here, you can then skip Precrack Specimen in the Main Menu window. Precrack Parameters Parameter Description Precrack Cycles Completed Specify the number of precrack cycles completed. Precrack Final Crack Size Specify the final crack size calculated from compliance. Precrack Final P Specify the final load during precrack.
Run the CTOD Fracture Toughness Test Parameter Description Stress Intensity K Specify the stress intensity (K) value to use in the load calculation. Calculate Stress Intensity K Stress Intensity K Parameters Parameter Description Crack Size Specify the crack size value to use in the stress intensity (K) calculation. Load Specify the load value to use in the stress intensity (K) calculation.
Run the CTOD Fracture Toughness Test Caution: Lower Setpoint/Span Times in the Series 793 Station Manager application can cause specimen or equipment damage. Decreasing the Setpoint/Span Times default of 2.0 seconds after the test run completes can be too fast for other actuator commands, and can cause specimen or equipment damage.
Run the CTOD Fracture Toughness Test Crack Size Check Parameters Parameter Description Entered Crack Size Specify the crack size used to calculate the elastic modulus. The default value is equal to the specimen notch size. Elastic Modulus Specify the modulus used for crack size calculations. Ramp to Percent Specify the percent of load applied on the specimen in order to check the crack size. The load is ramped from zero to the specified percentage of load.
Run the CTOD Fracture Toughness Test 3. Click Run on the control panel to start the test activity. Optionally, if you want to review or change parameters, click Return to Main Menu. To suspend the activity after the activity starts, click Hold. When you suspend the activity, data collection stops and the application attempts to hold at the mean level. To stop the activity, click Stop. When you stop the activity, the application immediately ramps to zero load and saves the test data. 4.
Run the CTOD Fracture Toughness Test Parameter Description FCG End Level 1 Specify the desired end level of the command signal. FCG Frequency Specify the cycle frequency of the command signal. FCG Wave Shape Specify the wave shape of the command signal. The choices are True Sine or True Ramp.
Run the CTOD Fracture Toughness Test 3. In the Series 793 Station Manager application, set the Tools > Channel Options > Command Options > Setpoint/Span Times back to their previous values before you use it to command the actuator for other purposes (for example, for specimen removal or installation). Caution: Lower Setpoint/Span Times in the Series 793 Station Manager application can cause specimen or equipment damage. Decreasing the Setpoint/Span Times default of 2.
Run the CTOD Fracture Toughness Test Analyze Data CTOD Analysis Definition 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. Analysis Inputs Table The Analysis Inputs table contains the parameters used for the analysis.
Run the CTOD Fracture Toughness Test Channels by Time Table The Channels by Time table lists all data points collected in arrays: • Time Array • Load Array • CTOD Array • Displacement Array Charts Charts provide visual indicators of the data reported in the tables. • The Load vs. Time chart indicates changes in the load during the test. • The COD vs. Time chart indicates changes in the crack opening displacement during the test. • The Displacement vs.
Index Index A assign precrack values 32, 51, 65, 80 ASTM E 1290 - 07 18 E 1820 JIC 17 E 399 62 E 399 KIC 18 E 647 Fatigue Crack Growth Compliance template 17 E 647 Fatigue Crack Growth DCPD template 17 E-1820-08 17 E1290 CTOD 18 C calculator 32, 52, 66, 80 channel limited channel (CLC) control mode 23 COD signal polarity 22 constant load control mode parameters 30, 84 controller station 22 conventions 11 crack growth parameters 28 crack size check (CSC) 34, 54, 68, 82 Crack Size Check Cycle 38, 57, 71, 86
Index precrack specimen 36, 55, 69, 83 R run FCG test 36 S SE(B) specimen 22 setpoint 33, 53, 67, 81 span 33, 53, 67, 81 specimen precrack 36, 55, 69, 83 specimen geometry import 20 specimen installation 23 station open 22 prerequisites 22 support phone 9 technical 7 T technical support 7 template CTOD 76 fatigue crack growth 26 JIC 44 KIC 62 legacy 18 test execution 36 new run 26, 44, 62, 76 test definition from a template 16 test parameters 27, 45, 63, 77 test results fracture test 38, 57, 71, 86 test
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