SEDL / STP / STP1131-EB / STP23706S

Experimental Study of Near-Crack-Tip Deformation Fields

Chiang, F-P
Leading professor and graduate students, State University of New York at Stony Brook, Stony Brook, NY

Li, S
Leading professor and graduate students, State University of New York at Stony Brook, Stony Brook, NY

Wang, YY
Leading professor and graduate students, State University of New York at Stony Brook, Stony Brook, NY

Pages: 21    Published: Jan 1992

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Abstract

Stationary crack-tip singularity fields of strain-hardening material, Al 2024-0, are investigated by combined moiré and moiré interferometry techniques as a crack goes through elastic and plastic deformation. The experimental results are compared with the corresponding theories at different stages, K field and HRR field, respectively. A two-dimensional finite element computation is also carried out at plastic deformation stage to aid the analysis.