Fracture Resistance of Brittle Materials Under Local Loading by Scratching to Edge Chipping. Part. 1. Methodical Grounds of Research

Strength of Materials - Methodical aspects of experimental investigation of brittle materials under local edge loading by scratching the specimen surface with a Rockwell indenter to its edge...     

Specific Features of Glass Damage and Fracture Resistance under the Rockwell Indenter Scratching of the Specimen Surface until the Edge Chipping Appearance

Strength of Materials - The paper presents the experimental results of investigations using different types of glass by the Rockwell indenter scratching of the specimen surface till its edge...     

Fracture Resistance of Brittle Materials Under Local Loading by Scratching to Edge Chipping. Part 2. The S+EF Relation for Linear Elastic Ceramics

Strength of Materials - Experimental studies to evaluate the fracture resistance of brittle materials by Rockwell scratching of the specimen surface to its edge chipping (S+EF method) are...     

Glass fracture in edge flaking

Fracture resistance of technical quartz and normal window glasses was investigated in testing polished rectangular parallelepipeds by edge flaking their long edges with Rockwell and Vickers indenters (EF method) and by scratching the specimen surface with a Rockwell indenter followed by flaking its edge (S+EF method). It was established that the fracture of those glass specimens in their edge flaking with a Rockwell indenter was started with the formation of a Hertzian ring crack and their corresponding chip scars had the form of Hertzian “quasi-cones.” Fractographic data were used in analysis of test results. __________ Translated from Problemy Prochnosti, No. 6, pp. 103–112, November–December, 2007.