SEDL / STP / STP791-EB / STP37084S

Influence of Specimen Size and Shape on the Singularity-Dominated Zone

Chona, R
Instructor, visiting professor, and associate professor, University of Maryland, College Park, Md.

Irwin, GR
Instructor, visiting professor, and associate professor, University of Maryland, College Park, Md.

Sanford, RJ
Instructor, visiting professor, and associate professor, University of Maryland, College Park, Md.

Pages: 21    Published: Jan 1983

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Abstract

Improved computational methods have been used to determine, from photoelastic fracture patterns, those stress field parameters (in addition to the stress-intensity factor) that are associated with different fracture test specimen geometries. The variations with crack tip position of these nonsingular terms in modified-compact-tension and rectangular-double-cantilever-beam specimens have been studied. The results have been utilized to formulate criteria that can be used to quantify the concept of the singularity-dominated zone around a crack tip in specimens of finite dimensions.