Thanks for the reply! Yes, I want to measure stiffness. But I do not want to quantify the physical properties (density, yield, compression/ tensile aspects, etc.) of the plastic foam sheet I am using as these are avail. from material data sheets. Nor do I want to test to failure.
I only want...
I have designed a test apparatus where I can apply known bending and torsion loads to thin sheets of foamed plastic.
All test samples will be identical sized sheets with various treatments to improve stiffness..with the added weight of the treatment recorded. I will use the information to...