Stress corrosion susceptibility coefficient

Indentation Microcracks as a Route to Stress-Corrosion Susceptibility Coefficients. 201... 

In equation (5.103), V is the crack velocity, Ki the stress intensity coefficient, and B and n are constants dependent on the material and its environment. The constant B is sometimes written as V to signify that it represents the critical velocity of crack growth at failure. The exponent n is an important parameter known as the stress-corrosion susceptibility coefficient of the ceramic. 

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