A new nondestructive instrument for bulk residual stress measurement using tungsten kα1 X-ray

Ce Ma; Zuo-Yong Dou; Li Chen; Yun Li; Xiao Tan; Ping Dong; Jin Zhang; Lin Zheng; Peng-Cheng Zhang

doi:10.1063/1.4965972

A new nondestructive instrument for bulk residual stress measurement using tungsten k_α1 X-ray

Rev Sci Instrum. 2016 Nov;87(11):115101. doi: 10.1063/1.4965972.

Authors

Ce Ma¹, Zuo-Yong Dou¹, Li Chen², Yun Li², Xiao Tan¹, Ping Dong¹, Jin Zhang³, Lin Zheng⁴, Peng-Cheng Zhang¹

Affiliations

¹ Science and Technology on Surface Physics and Chemistry Laboratory, P.O. Box No. 9-35, Huafengxincun, Jiangyou, Sichuan 621908, China.
² Institute of Materials, China Academy of Engineering Physics, No. 9, Huafengxincun, Jiangyou, Sichuan 621908, China.
³ Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China.
⁴ Institute of Southwest Technology Engineering, Chongqing 400039, China.

PMID: 27910403
DOI: 10.1063/1.4965972

Abstract

We describe an experimental instrument used for measuring nondestructively the residual stress using short wavelength X-ray, tungsten k_α1. By introducing a photon energy screening technology, the monochromatic X-ray diffraction of tungsten k_α1 was realized using a CdTe detector. A high precision Huber goniometer is utilized in order to reduce the error in residual stress measurement. This paper summarizes the main performance of this instrument, measurement depth, stress error, as opposed to the neutron diffraction measurements of residual stress. Here, we demonstrate an application on the determination of residual stress in an aluminum alloy welded by the friction stir welding.