The VEM range of video extensometers from Tinius Olsen is a blend of precision hardware; camera, lens technology – and software; data acquisition, signal processing, and data interpretation. The VEM software is the user interface through which the power of the video extensometer system is entirely realized. It can be used for typical routine and repetitive materials testing in compression, shear, tension, or flexural modes with one or two gauge length references (L0), or for more multifaceted testing. This may require many gauge length references (L0’s) deriving multiple live strain readings and results in favor of dual strain averaging, shear strain values, Poisson’s ratio, r&n, and live in-test specimen alignment monitoring.
The software can be configured to work as needed for the particular task as an integral part of Tinius Olsen’s Horizon materials testing system. It joins with a Tinius Olsen testing machine frame, capturing data and using that data in strain rate control of the testing machine. It can also be used with older Tinius Olsen and non-Tinius Olsen testing machine frames, where intimate digital integration is not possible at all times. Here, the strain data captured can be shared instantly with the testing machine system. It can also bring the testing machine force data signal into the software to enable graphing and results to be calculated within the software in conjunction with the legacy testing machine user interface.
The software comes in four levels; Horizon based, Basic, Standard, and Advanced. Horizon based is the leanest in function – direct non-contacting extensometery, enabling real-time graphs and results for strain measurement proportionate to basic gauge lengths.
Basic, Standard and Advanced levels all take advantage of the video capability, offering a post-test play back function. The recorded test, with embedded strain data, can be replayed, graphs and results reviewed. This can be a permanent record of the test stored as part of the test records in conjunction with the traditional 2D X/Y graph and results.
The Advanced level is uniquely supplied with a complete post-test analysis function. Besides replaying a test for review, new measurements and gauge lengths can be applied. Original gauge lengths can be moved and substituted on the specimen – perhaps over an unanticipated specimen break point. The test can then be rerun in the virtual environment and graphs and results recalculated. This is a robust function for those engaged in research, who may learn they need additional results and data after the original test.
Key Features
- One extensometer measures in tension, flexural, compression, shear modes
- Non-contacting video extensometer solution
- Offers a permanent record for recall of the test in video format with complete resolution embedded strain data
- Supports transverse, axial, orthogonal, and rotational measurements
- No need for bonded strain gauges, multiple clip on extensometers for r&n
- Meets the stipulations of ISO 9513 class 0.5, ASTM E83 class B1 and GB
Platform
| * VSS = Video Support Software |
Horizon Based |
Horizon & VSS or VSS stand alone |
Horizon & VSS or VSS stand alone |
Horizon & VSS or VSS stand alone |
| Optional functional levels |
None |
Basic |
Standard |
Advanced |
| General Features |
| Live - Video and results |
✔ |
✔ |
✔ |
✔ |
| Record Archive - Save result and video |
x |
✔ |
✔ |
✔ |
| Review Mode - Recall and replay test(s) see all GL, GL movement, digital meters/live results, including inputs |
x |
✔ |
✔ |
✔ |
| Post-Process - Re-run test, re-analyze, re-calculate results, add and calculate new results |
x |
x |
x |
✔ |
| Video Channels |
1 |
2 |
2 |
4 |
| Analog & Digital In /Out |
x |
✔ |
✔ |
✔ |
| Measurement counts/results (max. no. [✔= no limit]) |
| Time |
1 |
1 |
1 |
1 |
| UTC Time |
✔ |
✔ |
✔ |
✔ |
| Displacement - Two measurement points, the displacement measured is the distance a point moves from its original point position. Example: could use on a flex test to put two points on the specimen |
2 |
2 |
2 |
2 |
| Extensometer - 2 extensometers means 2*GL, 2* strain data streams relative to those GL(s) and 2* movement data streams relative to the GL(s) no units, both in any direction Tension/Compression |
8 |
2 |
2 |
Up to 100 gauge lengths |
| Strain - Is effectively another extensometer single data stream % strain relative to GL in any direction |
8 |
x |
1 |
✔ |
| Dual Average Strain - Extensometer single data stream % strain dual averaging function |
8 |
x |
1 |
✔ |
| Poissons - Extensometer single data stream % strain with Poissons function |
1 |
x |
1 |
✔ |
Standard Mat Test - Enables user to enter specimen dimensions and calculate; Stress, Strain, E Modulus, Proof Stress (at user specified offset) Ultimate Stress and Ultimate Failure Strength assuming a force measurement is passed from the testing machine
Note use for standalone mode |
N/A |
x |
x |
✔ |
| Rotation - Continuous data stream from a point moving relative to a pivot point in degrees angle movement. Can be used as an indication of specimen alignment throughout the test |
1 |
x |
1 |
✔ |
| Shear Strain - Extensometer single data stream % strain with shear function, e.g. ASTM D 7078 |
1 |
x |
2 |
✔ |
| Crack Length - Extensometer single data stream % strain with Peel test function, e.g. ASTM D5528,D3433, ISO 25217 |
x |
option |
option |
option |
| 2D DIC - Strain mapping |
x |
option |
option |
option |
| 2D From Mat Test Lens |
x |
x |
2 |
✔ |
| Calibration Support Tools |
✔ |
Pre-calibrated |
Pre-calibrated |
Pre-calibrated |
Tinius Olsen's VEM Software
Tinius Olsen's VEM Software - Picture 1
Tinius Olsen's VEM Software - Picture 2
Tinius Olsen's VEM Software - Picture 3