MTS Fundamental Video Extensometer TM Product Information 100-233-111 A
Copyright information Trademark information © 2011 MTS Systems Corporation. All rights reserved. MTS is a registered trademark and MTS Fundamental is a trademark of MTS Systems Corporation within the United States. These trademarks may be protected in other countries. VidéoTraction is a trademark of Iris Technologies. All other trademarks or service marks are the property of their respective owners.
Contents Technical Support 5 How to Get Technical Support Before You Contact MTS 5 5 If You Contact MTS by Phone 7 Problem Submittal Form in MTS Manuals 8 Preface 9 Before You Begin Conventions 9 10 Documentation Conventions 10 Video Extensometer 13 Introduction Specifications 13 14 Version LC X 14 Version LC XY 15 Additional Specifications 16 Other lens are available: 20, 40, 50, 100, 500, 1000 mm Principle of Markers Tracking Two Markers 17 Four Markers 18 Seven Markers 17 19 St
Connections 34 Equipment Installation 34 Camera Mounting 34 Specimen Installation Lighting 34 Software Installation 4 34 35 Fundamental Video Extensometer
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. If you cannot find answers to your technical questions from these sources, you can use the Internet, e-mail, telephone, or fax to contact MTS for assistance.
Know information from prior technical assistance Identify the problem Know relevant computer information Know relevant software information 6 Technical Support If you have contacted MTS about this problem before, we can recall your file based on the: • MTS notification number • Name of the person who helped you Describe the problem and know the answers to the following questions: • How long and how often has the problem occurred? • Can you reproduce the problem? • Were any hardware or softwar
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.
Problem Submittal Form in MTS Manuals Use the Problem Submittal Form to communicate problems with your software, hardware, manuals, or service that are not resolved to your satisfaction through the technical support process. The form includes check boxes that allow you to indicate the urgency of your problem and your expectation of an acceptable response time. We guarantee a timely response—your feedback is important to us.
Preface Before You Begin Safety first! Other MTS manuals Before you use your MTS product or system, read and understand the Safety manual and any other 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.
Conventions Conventions Documentation Conventions The following paragraphs describe some of the conventions that are used in your MTS manuals. Hazard conventions Hazard notices may be embedded in this manual. These notices contain safety information that is specific to the activity to be performed. Hazard notices immediately precede the step or procedure that may lead to an associated hazard. Read all hazard notices carefully and follow all directions and recommendations.
Conventions 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.
Conventions 12 Preface Fundamental Video Extensometer
Introduction Video Extensometer Introduction The video extensometer is available in models for the simple longitudinal strain to the advanced PRO and DEV models that integrate a machine control system. This no-contact system of mechanical tests use video for the analysis of polymers, elastomers, metals strains, and so forth.
Specifications Specifications Version LC X VidéoTraction Processing Software Measures the deformation field of a sample or plastic part during an external mechanical loading through the displacement of marks printed (2 marks) onto the surface. Measures axial strain. Collects and processes video pictures of the targeted area. Displays information through a user-friendly interface. Sends the deformations by external signals in 0-10 V or RS232.
Specifications Version LC XY VidéoTraction Processing Software Measures the deformation field of a sample or plastic part during an external mechanical loading through the displacement of marks printed (2 or 4 marks) onto the surface. Simultaneous measurement of both axial and transversal strain. Collects and processes video pictures of the targeted area. Displays information through an user-friendly interface including calibration routine, calibration of both strain (%) and elongation (mm).
Specifications Additional Specifications Additional Specifications Field of View (FOV) 50 mm (2 in) 100 mm (4 in) 3 μm (0.12 μin) 4 μm (0.16 μin) 5 mm (0.2 in) 10 mm (0.4 in) 50 Hz 50 Hz 2 mm (0.08 in) diameter dots 4 mm (0.16 in) diameter dots 1 mm (0.04 in) thick lines 1 mm (0.
Principle of Markers Tracking Principle of Markers Tracking Two Markers Place the gage such that it is centered on the specimen (Figure 1). Trace the two markers, by using the sites corresponding to the test chosen, using a felt pen. The markers must be similar and have distinct edges (Figure 2). Let dry for a few seconds.
Principle of Markers Tracking Four Markers Place the gage such that it is centered on the specimen (Figure 3). Trace the four markers, by using the sites corresponding to the test chosen, using a felt pen. The markers must be similar and have distinct edges. The markers must be similar and have distinct edges (Figure 4). Let dry for a few seconds.
Principle of Markers Tracking Seven Markers A seven-markers test makes it possible to perform a tensile test on sample with a banded structure. The configuration allows you to measure the longitudinal strain (by interpolation of the partial strains) in a material section where the transverse strain is measured. Volume variation during the test is deduced with the assumption of transverse isotropy.
Principle of Markers Tracking Here is the calculation of the partial strains: The calculation of the transverse strain: The calculation of the longitudinal deflection by interpolation of the partial strains: 20 Fundamental Video Extensometer
Starting the Video Extensometer Starting the Video Extensometer Test Parameters This window allows you to change test settings or to load previous tests. 1. The Load INI button allows you to recover the characteristics of a previous test. 2. Color of the markers allows you to choose the color of the markers used on the specimen.
Starting the Video Extensometer 3. Numbers of markers: According to the version, it is possible to choose different types of tests (see “Principle of Markers Tracking” on page 17): • A 2-markers test allows you to track the distance between the 2 markers onto a sample, and to calculate the longitudinal strain. • A 4-markers test is the same procedure of that for the 2 markers, with the addition of 2 horizontal markers for calculating the transverse strain.
Starting the Video Extensometer 7. If a Telescopic column (motorized column) is available, it can be controlled by the software to follow the marks on the specimen to measure the strain in the longitudinal direction, until the space between the markers is too large for the image field of the camera. 8. To record the images at various intervals during the test: A. At the start and the end of the test by checking the corresponding checkbox.
Starting the Video Extensometer 9. The buttons: • Press the Save INI… button to record the test configuration inside a file in the selected directory. • Press the OK button to accept the parameters and proceed to the Test window. Or in the case of bi-camera configuration, proceed to the Settings window for the second camera. • Press the Cancel to quit the application without saving changes.
Starting the Video Extensometer 10. Recording of the data allows you to record the strains in a data file. Other information is present like the number of points and the time (in seconds) since the beginning of the test. You need to define: • The number of cycles between each recording. One cycle corresponds to each received image or when the average is active, each averaged strain, and • The file name of the recording.
Starting the Video Extensometer Test Window The Main Window To select a region of interest of the image, click and hold the left mouse button on the image then drag to define the rectangle of interest then let go of the mouse button. When the left mouse button is released, the image is increased according to the selected area. Four combinations are offered to the user: • Automatic optimization of the image and automatic search of the markers' area.
Starting the Video Extensometer To carry out a test, three essential stages must be followed: Note In the procedure is automatic, the first two operations are carried out consecutively, if the manual search of the markers is not checked. • The first step is the image optimization, which can be carried out in an automatic manner (using the Optimize the image button) or manual manner. In the case of the manual adjustment, contrast and brightness are the two main factors of a good optimization.
Starting the Video Extensometer Refer to the following table for a description of the callouts in the above figure. Callout 1 Description Confirmation of the localization of the markers: • the green circle represents the minimal area. • the red circle represents the maximum area. The markers must be positioned approximately between these two circles. If it is not the case, continue its progression until meeting new markers or until reaching the end of the progression bar.
Starting the Video Extensometer Callout 7 Description If you previously checked the option of the telescopic column, click the Motorized Column... button. It is possible to move the motorized column up and down, in order to be able to correctly visualize the markers, before the beginning of the test or at the end of the test to return to the initial position. The reactivity value makes it possible to determine on which proportion of the image, the signal 10V will be cut out.
Starting the Video Extensometer Strain Visualization When all the information is correct, click the Reduce button; the following small window appears. This window shows the strain(s) or a warning message if the markers are lost.
Starting the Video Extensometer VideoStrain Test Window In contrast with the VIDEOTRACTION LC XY, the VIDEOSTRAIN software (N markers) does not calculate the possible strain and does not post the strains. Each marker is numbered, and the barycentric coordinates are saved in the test file.
Software Registration Software Registration This software must be registered to be used for an unlimited amount of time. To register your software, click About, then click Resister. A key is generated and sent by email. Fill in the Key received field after you receive the key.
System Components Installation System Components 1. Digitizer (optional) 2. Camera 3. Cable video and power supply 4. Lens 5. Analog board (+/-10 V or serial port RS232) 6.
Connections Connections There is a network cable which goes from the acquisition card to the camera using the Ethernet port of the PC to transfer the images. The other cable is for the power supply of the camera; it uses a Hirose 12-pin connector. Equipment Installation Camera Mounting In order to carry out tests of good quality, level the camera perfectly in the axis of the specimen.
Software Installation Software Installation Installation is done in several steps that install the software and external devices, set up the network, and register the software. The following provides guidelines for the installation. 1. Software Setup Remove the old software version before launching the new installation of the software, in the order indicated below: • For all versions, remove the software in Add/remove programs located in the control panel.
Software Installation B. When the driver installation is finished, plug in the USB-serial cable on the PC. The hardware installation wizard assistant will detect and install the four new serial ports, a dialog will appear for each new port (repeat this operation four times). Do not stop the installation until all ports are configured. 4. Install Sapera LT. Read the dialogs on the screens and follow the prompts. On the last window, choose No. I will restart my computer later.
Software Installation Fundamental Video Extensometer B. Double click on “Network Connections” icon C. Right click on Local Area Connection icon. Click on Properties menu item. D. Check Internet Protocol (TCP/IP) box. Click Properties button.
Software Installation E. Check and choose Obtain an IP address automatically and obtain a DNS server address automatically. When you connect the camera to the Ethernet port of the PC or when you start the PC you must wait a certain moment for recognition of this one. This icon shows you that the camera is not connected. Wait this icon before starting the video extensometer.
Software Installation 8. Register Software To register the software, click About, the following window opens. Then click Register. The window below appears, You must communicate to us the “Number” registered in the greyed box at this email address EM.TechSupport@mts.com and then we will return the software key. Enter the key number in the key received field and click OK to complete registration.
Software Installation 40 Fundamental Video Extensometer
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