NON-ELASTIC DEFORMATION DURING FRACTURE OF GLASS.
WESTINGHOUSE ELECTRIC CORP PITTSBURGH PA MATERIAL SCIENCES DEPT
Pagination or Media Count:
Micrographs of glass fracture surfaces are presented that unambigously show that non-elastic deformation takes place during crack propagation. These observations are of bent fragments still attached to straight fracture steps that are usually found on fracture surfaces. The mechanism of step formation leading to bent fragments is presented in relation to reported mechanisms of similar fragments viz., cleavage whiskers formed on fracture surfaces of quasi-brittle materials e.g., MgO. These observations are discussed with reference to several non-elastic deformation mechanism that might occur in glass. Author
- Ceramics, Refractories and Glass