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Progress and Challenges of Ultrasonic Testing for Stress in Remanufacturing Laser Cladding Coating

1
College of Material and Mechanical Engineering, Beijing Technology and Business University, Beijing 102488, China
2
National Key Laboratory for Remanufacturing, Academy of Army Armored Forces, Beijing 100072, China
*
Author to whom correspondence should be addressed.
Materials 2018, 11(2), 293; https://doi.org/10.3390/ma11020293
Received: 8 January 2018 / Revised: 6 February 2018 / Accepted: 12 February 2018 / Published: 13 February 2018
Stress in laser cladding coating is an important factor affecting the safe operation of remanufacturing components. Ultrasonic testing has become a popular approach in the nondestructive evaluation of stress, because it has the advantages of safety, nondestructiveness, and online detection. This paper provides a review of ultrasonic testing for stress in remanufacturing laser cladding coating. It summarizes the recent research outcomes on ultrasonic testing for stress, and analyzes the mechanism of ultrasonic testing for stress. Remanufacturing laser cladding coating shows typical anisotropic behaviors. The ultrasonic testing signal in laser cladding coating is influenced by many complex factors, such as microstructure, defect, temperature, and surface roughness, among others. At present, ultrasonic testing for stress in laser cladding coating can only be done roughly. This paper discusses the active mechanism of micro/macro factors in the reliability of stress measurement, as well as the impact of stress measurement on the quality and safety of remanufacturing components. Based on the discussion, this paper proposes strategies to nondestructively, rapidly, and accurately measure stress in remanufacturing laser cladding coating. View Full-Text
Keywords: remanufacture; laser cladding forming; stress; ultrasonic testing; complex factors coupling remanufacture; laser cladding forming; stress; ultrasonic testing; complex factors coupling
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MDPI and ACS Style

Yan, X.-L.; Dong, S.-Y.; Xu, B.-S.; Cao, Y. Progress and Challenges of Ultrasonic Testing for Stress in Remanufacturing Laser Cladding Coating. Materials 2018, 11, 293.

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