Interlaboratory Comparison of Flexural Strength of Structural Ceramics

Abstract

This paper presents results of statistical evaluation of flexural strength of various silicon nitrides and silicon carbides. The interlaboratory comparison involved both analytical and experimental procedures. For instance, two types of reaction bonded silicon nitride from the same production lots were evaluated using different test fixtures and experimental methods. A fairly extensive data base on five types of nitrides and carbides was evaluated using both conventional and advanced statistical techniques. The various differences observed are discussed in the body of the paper.

Interlaboratory Comparison of Flexural Strength of Structural Ceramics

“…In only a few instances were there clear indications of Weibull distributions. Again, due to space limitations, the full detailed analysis appears elsewhere (6). However, for the benefit of the reader, selected design allowables are listed for the room temperature tests where generally twenty five replicates were completed (see Table X…”