Mr. Brands,

you should investigate the CEMA web site. ■

Dear Mr Brands,

I am not that experienced in conveyor belts, but is the

change in elasticty as a function of the temperature not equally important ? (or even more ?)

best regards

teus ■

Density, elastic (dynamic) modulus and thermal expansion coefficients of rubber and fabric tensile members (polymers) do change with temperature, molecular level construction materials, constuctions of differing weaves, strain rates, and many other conditions.

I have posted dynamic elastic rubber polymer properties (E') dependent on temperature and strain rate both in the forum and on our website as factors in calculating rolling resistance and power analysis. The dynamic modulus is the true spring property which cannot be determined from any simple force-displacement test.

Note: rubber and fabric tensile members (nylon, polesters, et al) are related polmers. The dynamic modulus cycling can range from very slow force-displacement ( seconds to hours) to very fast ( milliseconds).

The values are too complex to post. Most manufacturers do not offer these properties because of their complexities and potential for misuse.

I do believe this has been discussed before in this forum. ■

Another important point -- the elastic modulus differs in tension, torsion and compression. ■