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Slow strain rate testing , also called constant extension rate tensile testing , is a popular test used by research scientists to study stress corrosion cracking. It involves a slow dynamic strain applied at a constant extension rate in the environment of interest. These test results are compared to those for similar tests in a, known to be inert, environment. A 50-year history of the SSRT has recently been published by its creator. The test has also been standardized and two ASTM symposia devoted to it.
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