Optical Analysis of Ductile Fracture of Metals
The optical technique capable of recording 3-D deformation is applied to different cracked aluminum alloy specimens under tension. The experimental results are compared with the theories at the corresponding deformation stages. The singularity forms agree well with HRR field for stationary cracks and agree with the solutions proposed by Gao and Hwang when crack grows.
KeywordsDeformation Field Deformation Stage Stationary Crack Fringe Order Displacement Contour
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- Gao, Y.C. and Hwang, K.C., Elastic-plastic fields in steady crack growth in a strain hardening material. In Proceedings of ICF5, ed. D. Franois, 2, Pergamon press, 1981, pp. 669–682.Google Scholar
- Dai, Y. and Hwang, K.C., A numerical investigation of unsteady crack growth in power-hardening material. ICF Int. Symp. on Fracture Mechanics, Beijing, China, 1983, pp. 315–311.Google Scholar
- Kobayashi, A.S. and Kang, B.S.F, Stable crack growth in aluminum tensile specimens. Exp. Mech., 1986, 27 (3), pp. 523–526.Google Scholar
- Chiang, F.P., Hareesh, T.V., Liu, B.C. and Li, S., Optical analysis of HRR field. Optical Eng, 1988, 27, pp. 625 - 629.Google Scholar
- Chiang, F.P., Moire method of strain analysis. Ch. VI, Manual of Experimental Stress Analysis, 3rd ed., ed. A.S. Kobayashi, Society for Experimental Stress Analysis, Brookfield Center, conn, 1978.Google Scholar