Influence of hole-drilling diameter on aluminum alloy residual stress measurement

Journal of Measurements in Engineering

Yue Wang¹  Caihong Xue²  Jiangbo Xu³ 

[1] COMAC Shanghai Aircraft Customer Service Co., Ltd., Shanghai, 201100, P. R. China;Sinomatech Wind Power Blade Co., Ltd., Beijing, 100192, P. R. China;State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China;

关键词: hole-drilling diameter;    numerical simulation;    strain-releasing coefficients;    welding residual stress;   

DOI  :  

来源: DOAJ

【 摘 要 】

A hole-drilling method and finite element (FEM) numerical simulation are used to estimate the residual stress of aluminum alloy welding joints. In order to study the influence of hole diameter on measurement accuracy, a group of experiments are conducted. Experiment results show that the measuring error can be the minimal when the drilling hole diameter is 4 mm. Residual stress of 2219-T87 aluminum alloy welding joints under this optimal hole diameter are obtained. The distribution of the residual stress from the welding seam to the outward is first tensile stress and then compressive stress. And the maximum residual stress is 123.2 MPa.

【 授权许可】

Unknown