Study of Damage Limit for Aluminum Alloy Plates with Surface Cracks under Cross-Thickness Bending

Abstract:

A damage limit prediction model was built due to fracture failure problems of aluminum alloy plates. Based on the global plastic collapse of the entire cross-section containing the defect, the relationships of crack width and depth of fracturing 7075 aluminum alloy plates with either shallow crack or deep crack was analyzed by using reference stress method. The damage limit curves of 7075 aluminum alloy plates with crack was drew, and safety zone of crack propagation under corresponding bending load was confirmed. Then the experimental verification was carried out, results show that calculated results are in good agreement with the test results during the shallow crack stage, while in the deep crack stage experimental results are slightly less than calculated results.

• Periodical: Advanced Materials Research (Volumes 881-883)
• Pages: 1365-1369
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.881-883.1365
• Online since: January 2014
• Authors: Hai Yang Yuan, Yun Xin Wu, Zhong Huai Wu, Zhi Qi Liao
• Keywords: 7075 Aluminum Alloy, Bending Load, Damage Limit, Reference Stress Method

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