Accession Number:

ADA231700

Title:

A Proposed Uniaxial Compression Test for High Strength Ceramics

Descriptive Note:

Final rept.

Corporate Author:

ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MA CERAMICS RESEARCH DIV

Report Date:

1989-09-01

Pagination or Media Count:

35.0

Abstract:

Compressive strength is critical to the performance of ceramics in armor, machine tool bits, and compressively loaded structural components. Traditional compression tests yield misleadingly low values for high strength ceramics. A new test, utilizing a dumbbell-shaped specimen, has been developed and has successfully measured the strength of Al2O3, B4C, TiB2, and SiC. Compression strengths approaching 7 GPa 1 million psi were measured. Results were accurate, reproducible, and consistent with present compressive fracture theory. A finite element analysis FEA was done to confirm a uniaxial stress state. An error analysis examines the severity of procedural errors. The test is simple and cost effective to perform.

Subject Categories:

  • Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE