Research Progress of Residual Stress Measurement Methods

Abstract

Residual stress is self-equilibrating stress within materials, which can have significant effects on manufacturing processing and serving performance. Therefore, an accurate and quantitative measurement of residual stress is always of great importance. In this paper, some characterization techniques on residual stress are reviewed elaborately, including their principle, development history, applications and limitations. Some destructive techniques, such as hole-drilling method, ring-core method, deep hole drilling method, slitting method and contour method are summarized firstly. Then three non-destructive techniques based on X-ray/electron diffraction, magnetic and ultrasonic signals are assessed. The last part of this overview particularly is devoted to a newly-developed technique for measuring the residual stress by combining incremental focused ion beam (FIB) milling and digital image correlation (DIC). Our review can help guiding investigations on residual stress as well as identifying the future development of techniques measuring residual stress.

Keywords: Residual stresses, Hole-drilling method, Slitting method, Contour method, Diffraction method, magnetic method