Compare your existing test method (e.g., ASTM D412) against JIS K 6251. Note differences in:
The stress at a given elongation (e.g., 100% Modulus) is determined by reading the stress value from the stress-strain curve at the specified elongation point.
Accurate results depend heavily on proper sample preparation. The standard specifies distinct geometries for test pieces, typically cut using precise geometric dies. Dumbbell-Shaped Specimens
Based on the importance of Jis K 6251 pdf, we recommend that:
Temperature plays a massive role in rubber elasticity.