Research progress of residual stress measurement methods

Research progress of residual stress measurement methods

26 March 2024 | Xuwen Li, Jiwei Liu, Hao Wu, Kesong Miao, He Wu, Rengeng Li, Chenglu Liu, Wenbin Fang, Guohua Fan
Residual stress refers to self-equilibrating stress within materials that can significantly affect manufacturing processes and performance. Accurate measurement of residual stress is crucial for engineering applications. This review summarizes various methods for measuring residual stress, including destructive and nondestructive techniques. Destructive methods such as the hole-drilling, ring-core, and slitting methods involve removing material to measure stress. The hole-drilling method is widely used, involving drilling a hole to release stress and measuring the resulting strain. The ring-core method is an internalized version of the hole-drilling method. The slitting method measures stress by introducing a slit and measuring deformation. The contour method involves cutting the specimen and using finite element analysis to determine stress. Nondestructive methods include diffraction methods like X-ray and neutron diffraction, which measure changes in lattice spacing. Magnetic and ultrasonic methods also measure residual stress based on material properties. The FIB-DIC method combines focused ion beam milling and digital image correlation for microscopic stress measurement. The review highlights the advantages and limitations of each method, emphasizing the importance of accurate measurement for engineering applications. Recent advancements in techniques such as the contour method and diffraction methods have improved the accuracy and resolution of residual stress measurements. The study concludes that further research is needed to develop more effective and accurate methods for measuring residual stress.Residual stress refers to self-equilibrating stress within materials that can significantly affect manufacturing processes and performance. Accurate measurement of residual stress is crucial for engineering applications. This review summarizes various methods for measuring residual stress, including destructive and nondestructive techniques. Destructive methods such as the hole-drilling, ring-core, and slitting methods involve removing material to measure stress. The hole-drilling method is widely used, involving drilling a hole to release stress and measuring the resulting strain. The ring-core method is an internalized version of the hole-drilling method. The slitting method measures stress by introducing a slit and measuring deformation. The contour method involves cutting the specimen and using finite element analysis to determine stress. Nondestructive methods include diffraction methods like X-ray and neutron diffraction, which measure changes in lattice spacing. Magnetic and ultrasonic methods also measure residual stress based on material properties. The FIB-DIC method combines focused ion beam milling and digital image correlation for microscopic stress measurement. The review highlights the advantages and limitations of each method, emphasizing the importance of accurate measurement for engineering applications. Recent advancements in techniques such as the contour method and diffraction methods have improved the accuracy and resolution of residual stress measurements. The study concludes that further research is needed to develop more effective and accurate methods for measuring residual stress.
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