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Development of Hardening Depth Evaluation Technique using Eddy Current – Establishment and Introduction of In-line Hardening Depth Inspection System –
Journal Article
2009-01-0867
ISSN: 1946-3979, e-ISSN: 1946-3987
Sector:
Citation:
Yamamoto, T. and Yamaguchi, T., "Development of Hardening Depth Evaluation Technique using Eddy Current – Establishment and Introduction of In-line Hardening Depth Inspection System –," SAE Int. J. Mater. Manf. 2(1):409-415, 2009, https://doi.org/10.4271/2009-01-0867.
Language:
English
Abstract:
A hardening depth evaluation technique using eddy current has been developed, which can be applied to a mass production line for destructive (cutting) inspections. Using this technique, changes in the hardness of the induction-hardened structure can be detected based on the changes in magnetic permeability. This technique reduces the thermal effect and improves measurement accuracy through a multi-frequency exciting method and a difference method algorithm.