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

Jiangbo Xu1, Caihong Xue2, Yue Wang3

1State Key Laboratory of Mechanics and Control of Mechanical Structures,
Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China

2Sinomatech Wind Power Blade Co., Ltd., Beijing, 100192, P. R. China

3COMAC Shanghai Aircraft Customer Service Co., Ltd., Shanghai, 201100, P. R. China

1Corresponding author

E-mail: 1akiarel@yeah.net, 2chxue@163.com, 3wangyue@163.com

(Received 9 January 2014; received in revised form 1 April 2014; accepted 9 April 2014)

Abstract. 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.

Keywords: hole-drilling diameter, numerical simulation, strain-releasing coefficients, welding residual stress.

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Cite this article

Xu Jiangbo, Xue Caihong, Wang Yue Influence of hole-drilling diameter on aluminum alloy residual stress measurement. Journal of Measurements in Engineering, Vol. 2, Issue 2, 2014, p. 57‑64.

 

Journal of Measurements in Engineering. June 2014, Volume 2, Issue 2
JVE International Ltd. ISSN Print 2335-2124, ISSN Online 2424-4635, Kaunas, Lithuania