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Recent content by cobram

  1. cobram

    Young's modulus height dependent

    Hello! My apologize for answering so late...(holiday and then flu)...anyway I have read a lot of literature about poroelasticity and I discover that the porous materials have diferent laws and eqations that govern their mechanical behavior. We have a monolith porous material with open pores...
  2. cobram

    Young's modulus height dependent

    First, thank you for answers. It's really helpful. I'm not calculating the strain by myself, because the software of machine do it. And yes it is dl/l. I think that the problem is not in calculations, because the software do it for me. Bthrueblood,Can you give me some more information about...
  3. cobram

    Young's modulus height dependent

    I made compression test with Instron and I got linear curves. But when I take tablets with higher height I get smaller modulus. And when I take rod with diameter cca 14mm and height 45 mm I get modulus ~ 7Mpa. And for d 14mm and h 30 mm modulus ~ 8Mpa, d14mm h 15mm E=16Mpa ecetera. We were...
  4. cobram

    Young's modulus height dependent

    Hello! First I want to apologize for my broken english. The problem I don't understand is this. We have rod porous materials and we want to measure modulus. We made compression tests and if I have diferent height of tablet or rod for example, the diameter is about 12mm and height is...

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