Non-destructive Testing for Hardness of Metal Components：Recent Advances and Future Perspectives

doi:10.3901/JME.2023.24.001

Abstract

Abstract: The hardness of metallic components is a crucial indicator of their mechanical and physical properties, making hardness testing an important aspect of industrial production. Traditional methods of hardness testing, such as indentation or scratch tests, suffer from issues such as high destructiveness and low efficiency, rendering them unsuitable for modern testing needs. Therefore, non-destructive testing methods have emerged as a research hotspot. With the development of acoustic and electromagnetic technologies, non-destructive hardness testing techniques based on these technologies have been developed. Herein, a systematic description of non-destructive hardness testing techniques based on acoustic and electromagnetic methods is presented, and the influence of different material microstructural changes on the detection characteristics is explored. Through an analysis of the relationship between characteristics and microstructural changes, a deeper understanding of the principles and applications of non-destructive hardness testing techniques is gained. Subsequently, novel signal processing methods based on neural networks are reviewed, which have shown great potential in improving detection accuracy and optimizing signal processing algorithms. Finally, future development trends of non-destructive hardness testing techniques are discussed.

Key words: hardness, non-destructive testing, ultrasonic testing, micromagnetic testing, eddy current testing

CLC Number:

TG156

SHA Jingwei, FAN Mengbao, CAO Binghua, YANG Xuefeng. Non-destructive Testing for Hardness of Metal Components：Recent Advances and Future Perspectives[J]. Journal of Mechanical Engineering, 2023, 59(24): 1-17.

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