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Experimental investigations of the influence of thickness and mixed-mode loading on the crack initial angle in LC4-CS aluminum
Author(s): Huiru Dong; Wanlin Guo; Liang Yu
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Paper Abstract

The influence of thickness and mixed mode I/II loading on the crack initial angle of aluminum LC4-CS plates of 2, 4, 8 and 14 mm thickness was investigated experimentally from tensile-tearing testing of the compact-tension-shear type specimens. Experimental results of the crack initial angle for various thickness plates and load mode mixity were presented, and compared with theoretical predictions form the maximum tangential stress criterion and the maximum triaxial stress criterion. The crack initial angle is found to vary not only with load mode mixity but also with specimen thickness. The experimental result show a god agreement with theoretical predictions in 2, 14 mm- thickness specimens but a great deal difference in 8 mm-thickness specimens. The results are discussed in the viewpoint of 3D failure theory.

Paper Details

Date Published: 29 May 2002
PDF: 4 pages
Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); doi: 10.1117/12.468832
Show Author Affiliations
Huiru Dong, Xi'an Jiaotong Univ. (China)
Wanlin Guo, Nanjing Univ. of Aeronautics and Astronautics (China)
Liang Yu, Xi'an Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 4537:
Third International Conference on Experimental Mechanics

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