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MTS Advantage™ Video Extensometer Innovative multi-point technology delivers accurate non-contact measurement
»» Maximize measurement versatility with non-contact multi-point measurements of strain, rotation, and displacement »» Perfect for fragile, brittle, or irregularly shaped specimens »» Measure samples through failure without damaging your extensometer »» Improve flexibility in your lab – one AVX system can replace dozens of extensometers »» Use multiple cameras and longitudinal gage lengths to study complex events »» Meets requirements for ASTM E83 Class B1, ISO 9513 Class 0.5, and EN 10002-4 standards
Non-contact extensometry is the method of choice for applications where it is especially difficult to measure strain using conventional means. Because they do not touch the specimen, non-contact extensometers work well when specimens that are thin or brittle, have irregular surfaces, require high-temperature or submerged environments, or tend to release a great deal of energy at failure. Driven by powerful cameras, processors and software, the MTS Advantage Video Extensometer (AVX) delivers unprecedented speed, accuracy and flexibility for non-contact measurement. The extensometer recognizes patterns on surfaces to acquire measurement data, which is processed by MTS TestSuite™ TW Software to calculate specimen strain and modulus.
The AVX enables higher accuracy and greater overall versatility than edge-toedge non-contact extensometers. It performs axial, axial-transverse, orthogonal, rotational and dual-average measurement. The AVX also supports numerous setups, including multi-camera, multi-segment and multi-point strain. This level of flexibility helps characterize non-homogenous materials such as composites, and allows test professionals to perform more precise studies of failure mechanisms. The AVX utilizes powerful proprietary software to provide greater test flexibility and more accurate strain measurement than other non-contact extensometers. Pre-configured packages easily enable the measurement of rubbers, plastics, metals, composites, and high-elongation materials.
Advantages of Video Extensometry P ER FECT FO R DEL ICATE SPECIM EN SAM PL ES
When testing a specimen sample that is fragile, brittle or irregularly shaped, non-contact extensometry prevents damage caused by the contact forces of a clip on extensometer. TA KE MU LTIPL E M EASUREM ENTS
The MTS AVX allows users to take up to 200 measurements in real time with one instrument. Options allow users to upgrade
to a more advanced package to measure strain, Possion’s ratio, and rotation or shear strain. IM PRO VE T E ST D ATA RE L IA B IL IT Y
The AVX eliminates the chance for operator error in placing the extensometer on the specimen, and allows repeatable measurements to be taken after the physical test is complete in post process mode.
Put the MTS Advantage Video Extensometer to Work for You The AVX allows for non-contact multi-point measurement of strain, rotation, and displacement by using pattern recognition and sub-pixel interpolation to measure exact displacements of selected points on a video image.
TEN S ILE TESTING
The MTS AVX works with virtually all tensile test set-ups, and unlimited gage lengths are possible through use of the appropriate lenses. High-temperature testing may also be performed as long as the unit has a line of site through the furnace window. Additionally, AVX avoids common tensile testing problems like slipping, adding stress concentrations or breaking during high-energy fractures.
Tensile Testing
C O MP R ES S ION TESTING
Compression platens often inhibit access to the specimen, but unlike contacting methods the AVX only requires line of site to the specimen. This eliminates any risk of damage to the strain measurement device. MU LTI-P O INT BEND TESTING
Compression Testing
High precision deflection measurements may be taken during a multi-point bend test. Point deflection measurements may be taken for the rollers or specimen, or strain can be directly measured from the surface in tension. S H EA R TESTING
2D multi-point tracking allows for direct measurements of shear strain. Direct measurements can be taken through measuring the change in angle between three points. Shear modulus measurements can be taken using these methods for v-notch or short beam specimens of any size using the appropriate hardware and minimal specimen preparation.
Multi-point Bend Testing
PRO T E CT YO U R INVE ST M E NT
Measurements through failure can be taken without any threat of damage to the video extensometer so tests can run without interruption. The MTS AVX can replace dozens of contact extensometers and when ASTM or ISO standards change, a properly designed video extensometer will meet those needs.
User-friendly Software Enables Quick Measurements
Upgrade to 2D Digital Image Correlation (DIC)
The AVX software is extremely intuitive and easy-to-use. After half a day’s training any user will be confident that they are obtaining accurate measurements. The main software window is divided into three sections: a navigation bar, a control window and a video window. The navigation bar allows you to move through the steps for configuring the extensometer, and the control window shows controls for configuring the application.
The AVX packages include an option of adding DIC capability to create full-field color maps of strain and displacement. This convenient visual tool for scanning an area under load to helps to identify areas of high stress, crack opening or other discontinuities.
A NA L O G /D IG ITA L IN P U TS
Up to 32 signals including force, crosshead displacement, or temperature from your test system can be read by the AVX software. An integrated calibration wizard allows it to convert the voltage signal back to the parameter being measured.
The DIC option operates in real-time as well as post-process analysis to create high-resolution full field maps that are overlaid on the original video files. Results are easy to interpret and it is possible to toggle between all measurement options without reprocessing a test.
C A L I BRATIO N
Includes simple step by step wizards to convert pixels to real-world measurements. A D D M EA S U REMEN TS
Simply add measurements of interest by pointing and clicking at the desired measurement locations.
E A SILY VISU A L IZ E ST RA IN A ND D ISPL A CE M E NT G RA D IE NT S
GRAPHS ALLOW REAL-TIME VISUALIZATION OF DATA
Create a graph before or after your test using the intuitive graphing interface. Simply select the x and y axis to plot any measurement outcome or input signal against any other measurement outcome or input signal. A NA L O G & D IG ITA L O U TP U T S
Up to 16 analog digital outputs give you the ability to connect digital or analog outputs to measurement results for real time output of data to MTS TestSuite TW Software.
The DIC software outputs 2D contour plots where color gradients show levels of strain. The software allows the user to define the x-axis and show Exx, Eyy or Exy.
Specifications FIV E PR EC O N FIGURED PACKAGES OF F ER F L EXIBIL ITY AND SIM PL ICIT Y
AVX-51 AVX-52 AVX-53
Axis of Measurement Application
Multiple (orthogonal, rotation, dual average)
Multiple (orthogonal, rotation, dual average)
Multiple (orthogonal, rotation, dual average)
Typical Applications
AVX-54
AVX-55
Multiple (orthogonal, rotation, dual average)
Multiple (orthogonal, rotation, dual average)
Rubbers/Plastics
Metals
Composites
R&D
High-Elongation
Video Camera
1 x HD
2 x HD
2 x HD
1 x HD
1 x 5 MP
Measurement Rate (Hz)
17-50
17-50
17-50
17-50
Focal Length (mm)
Lens
Working Distance (mm)
Suitable for Measuring Modulus
Hardware
Gage Length (mm)
Camera(s)
8
12.5
12
16
8
N/A
N/A
3 Lenses
2 Lenses
1 Lens
Adjustable
Adjustable 307
297
15-50
25 N/A
4 Lenses Adjustable
8
12
16
3 Lenses 297
Adjustable
√ √
M aximum strain range at gauge length (%) 250
87
92
10
50 413 253 173 413
13
-
413 173 87 - 580 364 257
100 173 93 53 173
-
-
173 53 10 - 257 149 95
-
53 - - - 95 41 14
– 893
16
25 893 573 413 893
–
√
8
–
200 53 13 - 53 -
– 893 548 87
– 1000 1000
893 413 421 10 1000 796 580
Best Possible ISO 9513 Accuracy
0.5
0.2
0.2
0.2
0.5
Best Possible ASTM E83
B2
B1
B1
B1
B2
Resolution (µm) based on 500 mm WD
AVX Instrument Controller
Live
1.4 1.0 0.8 1.4 0.2
1.4 0.8 0.5 0.1 1.1 0.8 0.6
√
√
√
√
√
√
√
√
√
√
√
√
√
√
General Record Archive √ √ Features Post-Process
0.1
√
Review Mode
√
√
√
√
√
Video Channels
2
2
8
8
2
Time
1
1
1
1
1
√
√
√
√
√
2
2
UTC Time
Software Pos Distance
Measurement Displacement Counts Extensometer
2
[max. no. Strain
2
(√ = Infinity)] Dual Avg Strain
2
2
2
√
√ 2
2
√
√ 2
1
√
√ 1
1
√
√ 1
Poisson’s Ratio
1
√
√ 1
Std Mat Test
√
√
Rotation
1
√
√ 1
Shear Strain
2
√
√ 2
2D DIC
Optional
Optional
Optional
Optional
Optional
MTS Systems Corporation 14000 Technology Drive Eden Prairie, MN 55344-2290 USA Telephone: 1.952.937.4000 Toll Free: 1.800.328.2255 Fax: 1.952.937.4515 E-mail:
[email protected] www.mts.com ISO 9001 Certified QMS
MTS is a registered trademark, and Advantage and MTS TestSuite are trademarks of MTS Systems Corporation within the United States. These trademarks may be protected in other countries. RTM No. 211177.
© 2015 MTS Systems Corporation. 100-248-318b AdvantageVideoAVX Printed in U.S.A. 9/15
