Published: Jan 1979
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The theoretical basis for use of the J-integral in crack growth analysis is discussed and conditions for J-controlled growth are obtained. Calculations related to the stability of crack growth are carried out for several deeply cracked specimen configurations. Relatively simple formulas are obtained which, in certain cases, permit an assessment of stability using data from a single load-displacement record. Numerical results for a bend specimen and for a center-cracked specimen illustrate the influence of strain-hardening and system compliance on stability.
crack propagation, fracture (materials), plastic deformation, stable crack growth
Professor of applied mechanics, Harvard University, Cambridge, Mass.
Professor of mechanics, Washington University, St. Louis, Mo.