An Experimental Study on the Compressive Biaxial Strength of Ceramics.
Abstract
This is a summary report on the findings of a mechanical testing program in which the biaxial compressive strength of WESGO Al-995, high strength alumina was measured. The test results indicate the biaxial compressive strength of such material is only slightly affected by the value of the minor principal compressive stress. The average value of the compressive strengths measured in all stress states is 528 ksi, if the equi-biaxial compression measurements are discounted because of some testing difficulties. These problems and the general problems of performing valid compressive strength measurements are discussed. The design and operation of the various testing devices employed is briefly reviewed. Only a small scatter was observed in the measured strength values. This smallness of the scatter is related to the large number of flaws which extend cracks before structural collapse of the specimen. Preliminary studies of the micro-spalling at loads between 30% and 100% of the failure are described.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1975
- Accession Number
- ADA013170
Entities
People
- George Sines
- Marc Adams
Organizations
- University of California, Los Angeles