Creep Crack Growth in Alumina with a Glassy Phase
摘要
Creep-induced crack growth can be described with the C*-integral as the relevant load parameter. Several possibilities of evaluating the C*-integral in single specimen tests are discussed, and the constant load and the constant loading-rate are applied to an alumina ceramic containing a glassy phase. The crack-growth rate as a function of the C*-integral is described by a power-law relation with an exponent which agrees very well with the theoretical value.