Flexural fatigue of Elastomers

[bertoni]

Hello,
I'm working with elastomers. Basically with TPU, Thermoplastic polyurethane.
I need to perform mechanical tests in order to validate my computational models, but I did not find standards for dynamic tests involving bending for elastomers. The closest I found was the ASTM D-671, however I need to control my test by strain and not by stress.
Someone can help me
Thanks a lot

[Jorgen]

If you cannot find a standard that fits your needs, then I recommend that you develop your own test program and use that to characterize your materials.

Most of the testing I perform is not following a standard :p

-Jorgen