Recent content by Chris Thomas

The Young's modulus in both compression and tension tests should be theoretically the same but only at infinitesimal strain rates. As the strain rate increases, the effects of the viscoelasticity of the material also increase. If i were to guess, I would say that your tensile test is being...

Hopefully I can help you understand what's going on with your tensile test. So I am assuming you are testing dogbone style standard specimens. The Hooke's law conversion should work well if you are testing metals but will not work so well if you are testing rubber or highly elastic plastics...

I would recommend first getting an idea of the exact tests you would like to perform. Each test is different, for instance a bend test on plastics is much different than a bend test on metals or glass. In each case you will need different types of fixtures, load cells, and accessories. The...

When a sample breaks at the grip jaw face the sample should be discarded and the results should be ignored. This is a failed test which is why the stress-strain curve is reporting data that is slightly lower than anticipated. The sample must break somewhere in the middle of the gauge length...