BIAXIAL-FRACTURE STRENGTH OF BRITTLE MATERIALS.
Abstract
The investigation described herein was conducted to develop an analytical model to accurately predict the biaxial-fracture strengths of brittle materials. A new biaxial-failure criterion has been developed. The new criterion is a flaw-based theory concerned with the influence of spherical and ellipsoidal discontinuities upon the fracture strength of brittle materials. One-hundred and eighteen porous zirconia test specimens were used for the fracture tests. These tests were conducted for uniaxial tension and compression and for two biaxial-stress states in the tension-compression quadrant. A careful analysis was made to develop test conditions that largely circumvented the experimental difficulties encountered by previous investigators. Photoelastic and strain-gage studies were conducted to verify the experimental techniques; the results showed that homogeneous stress fields were developed in the gage area of the test specimens. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1966
- Accession Number
- AD0483689
Entities
People
- H. W. Babel
Organizations
- Douglas