Development of a damage diagnosis for a gear using a laser beam (a proposal for a method of creating benchmark data to be used in diagnosis)

Eiichiro Tanaka, Yuta Kojima, Kazunari Okabe, Hitoshi Takebe, Satoshi Wada, Kazuteru Nagamura, Kiyotaka Ikejo, Ryozo Nemoto

Research output: Contribution to journalArticle

3 Citations (Scopus)


We developed a new diagnostic method by using a laser beam. A tooth surface is irradiated by the zonal laser beam from an oblique direction, and then the irradiated laser beam line is shifted along the height of the tooth according to gear rotation. The variation of the voltage proportional to laser reflection between initial and present conditions are compared, and the condition of the tooth surface can be diagnosed for things such as initial or abnormal abrasion, pitting, etc. Furthermore, we developed a method of automatic and remote damage diagnosis on a gear tooth surface according to various gear specifications by using the angle-distance relation map which made from pre-measured data of same material and heat treatment, and taking into account the influence of adjacent teeth. The measured data agreed well with the predicted data made with this method, therefore we can diagnosis the condition of various products automatically.

Original languageEnglish
Pages (from-to)348-361
Number of pages14
JournalJournal of Advanced Mechanical Design, Systems and Manufacturing
Issue number3
Publication statusPublished - 2013
Externally publishedYes



  • Damage Diagnosis
  • Gear
  • Gear Tooth Surface
  • Laser Beam

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering

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