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VACUUM ›› 2024, Vol. 61 ›› Issue (4): 96-101.doi: 10.13385/j.cnki.vacuum.2024.04.18

• 3D Printing Technology • Previous Articles     Next Articles

Eddy Current Testing Simulation for Surface Defects for Laser Melting Deposition

CHEN Cheng1, ZHU Ming-liang1, LI Ming-yue2,3, HE Zhen-feng2, WANG Zhi-guo2, HE Chen2   

  1. 1. CCTEG Shenyang Research Institute Co., Ltd., Fushun 113122, China;
    2. Shenyang Institute of Automation, Chinese Academy of Science, Shenyang 110016, China;
    3. School of Materials, Shenyang University of Technology, Shenyang 110169, China
  • Received:2024-05-20 Online:2024-07-25 Published:2024-07-29

Abstract: Based on the requirements of eddy current testing for additive manufacturing, in view of the difficulty of signal interpretation and defect quantitative and qualitative analysis of eddy current testing, the finite element simulation technology was adopted to establish an eddy current testing model for surface defects of TC4 titanium alloy additive parts. The distribution of electromagnetic field inside and around the sample during the inspection process was obtained, the influence of the length, width and depth of defects on the magnetic field signal during the inspection was studied, and the experimental verification was carried out. The simulation results indicate that the detection signal gets stronger as the increase of the defect size in a certain range, and variations in the length, width and depth of defects will all affect the detection signal, which is in good coincidence with the experimental results.

Key words: additive manufacturing, eddy current testing, finite element simulation, titanium alloy, surface defect

CLC Number:  TG156

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