SEDL / STP / STP631-EB / STP35541S

Dependence of J^Ic on the Mechanical Properties of Ductile Materials

Lanteigne, J
Graduate student, assistant research professor, and research professor, Department of Metallurgical Engineering, Ecole Polytechnique, Montreal, Quebec

Bassim, MN
Graduate student, assistant research professor, and research professor, Department of Metallurgical Engineering, Ecole Polytechnique, Montreal, Quebec

Hay, DR
Graduate student, assistant research professor, and research professor, Department of Metallurgical Engineering, Ecole Polytechnique, Montreal, Quebec

Pages: 15    Published: Jan 1977

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Abstract

Application of the relation J^Ic = K^Ic2/E yields values of J^Ic which are different from those measured directly. This difference is attributed to the plasticity of the crack tip. A more accurate relation for evaluation of J^Ic which takes into consideration the mechanical properties of the material such as the yield stress and Young's modulus, and based on compliance tests, is formulated. Experimental tests which demonstrate the validity of this equation are presented.