Development of Non-destructive technology for detecting grinding burns

Takayuki Azuma, Ryo Ito, Shinji Soma, Shinji Murakami, Tsunemoto Kuriyagawa

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The nitric acid corrosion method that is currently in use in the production field to inspect for grinding burns on workpieces has some disadvantages: its detection levels depend on people and equipment, and is a destructive inspection method that does not allow for a total inspection. This study therefore aims to develop a non-destructive technology for detecting grinding burns, one that will allow for quantitative total inspections on a production line. An eddy current sensor seems very promising as a means of performing non-destructive inspections because of its short measuring time and low costs. In this paper, we propose a method of simultaneously measuring the eddy current sensor's output at two different frequencies (the multi-frequency measuring method), as this method is not affected by any variations in the basic material of the inspection object, and we then verify its effectiveness. In addition, we prototype a grinding burn detection system using the proposed measuring method, and we evaluate the determinations it makes on grinding burns on workpieces. As a result, the proposed multi-frequency measuring method is found capable of determining grinding burns on workpieces more quantitatively and with higher sensitivity than the nitric acid corrosion method.

Original languageEnglish
Pages (from-to)700-707
Number of pages8
JournalInternational Journal of Automation Technology
Issue number6
Publication statusPublished - 2013 Nov


  • Eddy current
  • Grinding burn
  • Magnetic permeability
  • Non-destructive inspection
  • Retained austenite

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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