Dynamic strength evaluation of ceramic circular beams containing small flaws.

Abstract

A method for dynamic strength evaluation of ceramic circular beams containing small flaws was studied. (1) With an increase in the ratio of breadth and depth, the eigenvalues increased, except for the fundamental eigenvalue. The eigenvalues decreased monotonically, with an increase in the opening angle. (2) The critical frequency range was obtained by evaluating the strength of beams on the basis of the static-fatigue limit. (3) The critical frequency range increased slightly, with an increase in the equivalent crack length. (4) For an increase in the damping ratio, the critical frequency range was constant, and then became smaller. The fundamental critical frequency range was not affected by the damping ratio.