Techniques non destructives d’évaluation de la qualité des céramiques thermomécaniques^*

Non destructive technics for quality evaluation of thermomechanical ceramics

¹ Sté Céramiques et Composites, Centre de Bazet
² Sté Turboméca, Bordes par Bizanos

Abstract

Ceramics fragile behaviour points out the problem of their reliability. That is the reason for which an increasing number of studies are devoted to research and adjustment of non destructive testing technics adapted to these materials, particulary in applications where parts are working under high mechanical or thermomechanical stresses.

This study has been managed with the constant care to choose technics easy to integer in an industrial context. This leads to exclude some very performing methods but not supple enough to be adapted to a great variety of parts, or requiring a too long control time or a too heavy investment.

The select methods are composing a homogenous set of complementary technics, of rather easy use, appearing already as a tool of great efficiency.