Hello - I am working on a test for different neoprene mixtures. The set up is two jaws that clamp across the width of a strip of neoprene. One jaw is attached to a stationary post, the other is attached to a cylinder able to apply a variable pulling force. The problem I am having is when clamping the neoprene, it forms a weak point where the material is being compressed. I can of course score the material or cut a notch somewhere, but I am concerned it is then causing a directional stress and does not give me a true cross sectional strength of the material. Can anyone help provide some insight on how to best test the overall strength and tear resilience of materials such as neoprene? Is there a way to curtail the stress point where it is clamped? Is there a good way to perhaps cut the material such that it is wider on the ends so that the stress in the pinch points doesn't become a factor? Thanks in advance!