Measurement of the residual stress distribution in a thick pre-stretched aluminum plate

S. X. Yuan; X. Q. Li; S. M; Y. C. Zhang; Y. D. Gong

doi:10.1117/12.819625

31 December 2008 Measurement of the residual stress distribution in a thick pre-stretched aluminum plate

S. X. Yuan, X. Q. Li, S. M, Y. C. Zhang, Y. D. Gong

Proceedings Volume 7130, Fourth International Symposium on Precision Mechanical Measurements; 71302D (2008) https://doi.org/10.1117/12.819625
Event: Fourth International Symposium on Precision Mechanical Measurements, 2008, Anhui, China

Abstract

Thick pre-stretched aluminum alloy plates are widely used in aircraft, while machining distortion caused by initial residual stress release in thick plates is a common and serious problem. To reduce the distortion, the residual stress distribution in thick plate must be measured. According to the characteristics of the thick pre-stretched aluminum alloy plate, based the elastic mechanical theory, this article deduces the modified layer-removal strain method adapting two different strain situations, which are caused by tensile and compressive stress. To validate this method, the residual stresses distribution along the thick direction of plate 2D70T351 is measured by this method, it is shown that the new method deduced in this paper is simple and accurate, and is very useful in engineering.

Citation Download Citation

S. X. Yuan, X. Q. Li, S. M, Y. C. Zhang, and Y. D. Gong "Measurement of the residual stress distribution in a thick pre-stretched aluminum plate", Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 71302D (31 December 2008); https://doi.org/10.1117/12.819625

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