抄録
A strength evaluation system for ceramic components called “SCERAS” has been developed. This system includes the assumptions that the fracture strength data of the ceramic material is approximated by the 2-parameter Weibull distribution, and that the crack velocity v can be expressed as v=CKn (K: stress intensity factor, C, n: material constants).
The failure probability of ceramic components is analyzed with respect to the following failure modes under multiaxial stress states;
(1) Fast fracture
(2) Static fatigue fracture and fast fracture after static fatigue
(3) Above mentioned failure modes after proof testing
In this system, the strength evaluation is carried out using the results by the finite element method, so it is applicable to the arbitrarily shaped components subjected to any loading conditions.
