Thickness effect in compression testing
Thickness effect in compression testing
(OP)
I am testing a plastic foam core to verify its properties in uniaxial compression. We think the material we have is too soft. The specification ISO 844 I have to use specifies a thickness of 50mm. The core I can get is only 30mm thick. Will this make a difference? If it does will it be stronger or weaker? Is it possible to compensate for any difference if significant?





RE: Thickness effect in compression testing
RE: Thickness effect in compression testing
Nominally keeping the ratio of thickness to the other specimen dimensions will result in similar strengths, but there will still be some size effects.
You need to quantify your strength requirements; this will probably dictate the specimen form.