Evaluation of Non-equi-biaxial Residual Stresses from the Surface Displacements Around a Single Indentation

IF 4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals and Materials International Pub Date : 2025-03-01 DOI:10.1007/s12540-025-01923-w

Jong-hyoung Kim, Kyungyul Lee, Dongil Kwon, Gary S. Schajer

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Abstract

This study presents a novel model for evaluating non-equi-biaxial surface residual stresses in metals using surface in-plane displacements around an indentation, as an alternative to the commonly used instrumented force-depth curve. The surface X- and Y-displacements are measured within an annular region around the indentation imprint by Digital Image Correlation with random patterns generated from surface scratches. Integration of these displacements allows for evaluating principal residual stress magnitudes and directions by comparing the results from stressed and stress-free specimens. The effects of stress state and material property were investigated within a series of finite element simulations, and an alternative way was developed to eliminate the need for stress-free specimens. Experimental validation was conducted on specimens with known non-equi-biaxial stress states.

Graphical Abstract

查看原文本刊更多论文

从单个压痕周围的表面位移评估非等双轴残余应力

本研究提出了一种新的模型，用于利用压痕周围的表面平面内位移来评估金属中的非等双轴表面残余应力，作为常用的仪器力-深度曲线的替代方法。通过数字图像相关技术，利用表面划痕产生的随机图案在压痕周围的环形区域内测量表面X和y位移。这些位移的集成允许通过比较应力和无应力试样的结果来评估主残余应力的大小和方向。在一系列有限元模拟中，研究了应力状态和材料性能的影响，并开发了一种替代方法来消除对无应力试样的需求。对已知非等双轴应力状态的试件进行了实验验证。图形抽象

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来源期刊

Metals and Materials International 工程技术-材料科学：综合

CiteScore

7.10

自引率

8.60%

发文量

197

审稿时长

3.7 months

期刊介绍： Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.