Two approaches for estimation and expression of uncertainty in stress strain tests.(Tech...

In the present age of globalization, where mutual recognition agreement is the key word for intercontinental business, test certificates from an accredited laboratory gain in importance. As per accreditation criteria of ISO/IEC 17025:1999 standard, all testing laboratories have to provide an expression and estimation of uncertainty involved in each test parameter.

In this article, an attempt has been made to express and estimate uncertainty involved in a stress-strain test, measured by a universal testing system, for the test parameters including modulus at 300% extens