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Establishment of method to observe EHL film thickness and its behavior in commercial steel rolling bearing by ultrasonic interference method

Research Project

Project/Area Number 17560129
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Design engineering/Machine functional elements/Tribology
Research InstitutionKochi University of Technology

Principal Investigator

TAKEUCHI Akitoshi  Kochi University of Technology, Faulty of Engineering, Associate Professor, 工学部, 助教授 (30206940)

Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2006: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2005: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsElasto hydrodynamic lubrication / Measurement of thin film / Ultrasonic interference method / Rolling bearing / Light interference method / Sound impedance / Super accurate measurement / Tribology
Research Abstract

For the stable operation of a roll bearing operated with severe condition, it is important to observe an EHL film thickness and its behavior under the condition that solid contact slightly occurs. Therefore, it is insufficient only by conventional optical observation and must clarify the lubrication conditions of EHL region for real roll bearing which does not transmit the light.
The purposes of this study were proposal of a new measurement method of oil film thickness for the EHL film less than 100 nm by ultrasonic pulse reflection method, and establishment of the new measurement system which can observe the EHL film thickness and its behavior for commercial steel bearing.
Relations of reflection characteristic of ultrasonic wave, measured under atmospheric pressure with 50MHz probe, and the oil film thickness accord with the theory result which is made echo height average in ultrasonic wave irradiation area.
In addition, the relations of echo height for a known film thickness were measu … More red and calibration curves were made. When the estimation of a film thickness under the static condition with this calibration curve was done, it became clear that film thickness estimation of less than 100nm can be possible.
The distribution of the shape in echo height observed by a ultrasonic wave method with the monocyte type EHL apparatus, which consisted of optical glass and a steel ball, agreed with the shape of EHL film observed by light interference method qualitatively. When the similar experiment using steel disc was performed, the horseshoe-shaped oil film, which is generally observed by light interference method, was able to observe. In addition, the influence of speed and load for the formation of the EHL film accorded with a general tendency, and the possibility of the EHL film thickness measurement by a ultrasonic wave method was confirmed.
Furthermore, the behavior of a film thickness until direct solid contact start with a thrust bearing apparatus, which has a function stopping the revolution of balls and can evaluate lubrication conditions of a commercial roll bearing, was observed. As a result, it was confirmed that the behavior of EHL film thickness distribution of a commercial bearing was same with the behavior observed by a flat steel disc.
As mentioned above, the possibility of the evaluation of EHL lubrication conditions for the commercial bearing by an ultrasonic wave method was confirmed, and the base for technology development was established. Less

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (26 results)

All 2007 2006 2005

All Journal Article (17 results) Book (1 results) Patent(Industrial Property Rights) (8 results)

  • [Journal Article] 超音波を用いた点接触近傍の薄膜測定の可能性2007

    • Author(s)
      永見拓也, 竹内彰敏, 戸田 聡, 寺田聖一
    • Journal Title

      日本設計工学会四国支部平成18年度研究発表講演会講演論文集

      Pages: 29-30

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 超音波による油膜厚さ測定2007

    • Author(s)
      古川由容, 竹内彰敏, 戸田 聡, 寺田聖一
    • Journal Title

      日本設計工学会四国支部平成18年度研究発表講演会講演論文集

      Pages: 31-32

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Diagnostic Technique of Abnormalities in Ball Bearings with an Ultrasonic Method2006

    • Author(s)
      Akitoshi Takeuchi
    • Journal Title

      12th Asia-Pacific Conference on Non-Destructive Testing 2006 CD

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Diagnostic Technique of Abnormalities in Ball Bearings with an Ultrasonic Method2006

    • Author(s)
      Akitoshi Takeuchi, Seiichi Terada, So Toda
    • Journal Title

      The 3rd Asia International Conference on Tribology Vol.2

      Pages: 713-714

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Diagnostic Technique of Abnormalities in Ball Bearings with an Ultrasonic Method2006

    • Author(s)
      Akitoshi Takeuchi
    • Journal Title

      12th Asia-Pacific Conference on Non-Destructive Testing 2006 8

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Diagnostic Technique of Abnormalities in Ball Bearings with an Ultrasonic Method2006

    • Author(s)
      Akitoshi Takeuchi
    • Journal Title

      12th Asia-Pacific Conference on Non-Destructive Testing 2006 (AbstractはP83 CD配布)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 点接触近傍での超音波膜厚測定2006

    • Author(s)
      永見拓也, 竹内彰敏, 戸田 聡, 寺田聖一
    • Journal Title

      日本機械学会中国四国支部鳥取講演会公園論文集 No.065-2

      Pages: 161-162

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Quantitative evaluation of lubricated conditions with ultrasonic technique2005

    • Author(s)
      Akitoshi Takeuchi, Seiichi Terada, So Toda
    • Journal Title

      International Tribology Conference Kobe 2005

      Pages: 39-39

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] An application of ultrasonic technique for evaluation of lubricated condition between sliding surfaces2005

    • Author(s)
      Akitoshi Takeuchi, Seiichi Terada, So Toda
    • Journal Title

      Third US-Japan symposium on Advancing Applications and Capabilities in NDE

      Pages: 499-504

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Quantitative evaluation of lubricated conditions with ultrasonic technique2005

    • Author(s)
      Akitoshi Takeuchi, Seiichi Terada, So Toda
    • Journal Title

      International Tribology Conference Kobe 2005 39

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 超音波干渉法によるサブミクロン膜厚の測定2005

    • Author(s)
      永見拓也, 竹内彰敏, 戸田 聡, 寺田聖一
    • Journal Title

      日本設計工学会2005年度秋季研究発表講演会

      Pages: 89-90

    • Related Report
      2005 Annual Research Report
  • [Journal Article] コンポジット超音波振動子を用いたピストンリング油膜厚さ測定2005

    • Author(s)
      古川由容, 竹内彰敏, 戸田 聡, 寺田聖一
    • Journal Title

      日本設計工学会2005年度秋季研究発表講演会

      Pages: 97-98

    • Related Report
      2005 Annual Research Report
  • [Journal Article] パルス超音波を用いた転がり軸受の損傷ならびに劣化評価の試み2005

    • Author(s)
      谷 直樹, 竹内彰敏
    • Journal Title

      日本設計工学会2005年度秋季研究発表講演会

      Pages: 99-102

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Quantitative evaluation of lubricated conditions with ultrasonic technique2005

    • Author(s)
      Akitoshi Takeuchi, Seiichi Terada, So Toda
    • Journal Title

      International Tribology Conference Kobe 2005, Synopsis

      Pages: 39-39

    • Related Report
      2005 Annual Research Report
  • [Journal Article] An application of ultrasonic technique for evaluation of lubricated condition between sliding surfaces2005

    • Author(s)
      Akitoshi Takeuchi, Seiichi Terada, So Toda
    • Journal Title

      Third US-Japan symposium on Advancing Applications and Capabilities in NDE, Proceedings

      Pages: 499-504

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 多Ch超音波センサを用いたピストンリング油膜厚さ測定2005

    • Author(s)
      古川由容, 竹内彰敏, 戸田 聡, 寺田聖一
    • Journal Title

      日本設計工学会2005年度春季研究発表講演会

      Pages: 95-96

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 超音波法による転動体支持荷重測定の試み2005

    • Author(s)
      竹内彰敏
    • Journal Title

      日本設計工学会2005年度春季研究発表講演会

      Pages: 99-102

    • Related Report
      2005 Annual Research Report
  • [Book] 機械工学便覧 デザイン編β4 機械要素・トライボロジー2005

    • Author(s)
      日本機械学会編
    • Total Pages
      232
    • Publisher
      発行所:日本機械学会,発売所:丸善株式会社
    • Related Report
      2005 Annual Research Report
  • [Patent(Industrial Property Rights)] エコー高さ真値推定プログラム及びエコー高さ真値推定方法2007

    • Inventor(s)
      竹内彰敏
    • Industrial Property Rights Holder
      高知工科大学, オートマックス(株)
    • Filing Date
      2007-01-31
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 温度補償機能及び/又は温度測定機能を有する超音波探触子を用いた計測システム及びこの計測システムに用いられる超音波探触子2007

    • Inventor(s)
      竹内彰敏
    • Industrial Property Rights Holder
      高知工科大学, オートマックス(株)
    • Filing Date
      2007-01-31
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Patent(Industrial Property Rights)] エコー高さ真値推定プログラム及びエコー高さ真値推定方法2007

    • Inventor(s)
      竹内彰敏
    • Industrial Property Rights Holder
      高知工科大学, オートマックス(株)
    • Filing Date
      2007-01-31
    • Related Report
      2006 Annual Research Report
  • [Patent(Industrial Property Rights)] 温度補償機能及び/又は温度測定機能を有する超音波探触子を用いた計測システム及びこの計測システムに用いられる超音波探触子2007

    • Inventor(s)
      竹内彰敏
    • Industrial Property Rights Holder
      高知工科大学, オートマックス(株)
    • Filing Date
      2007-01-31
    • Related Report
      2006 Annual Research Report
  • [Patent(Industrial Property Rights)] 膜厚測定システム,願厚測定方法,及び,これらに使用される超音波探触子の取付構造2006

    • Inventor(s)
      竹内彰敏
    • Industrial Property Rights Holder
      高知工科大学, オートマックス(株)
    • Filing Date
      2006-02-13
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 膜厚較正曲線の取得方法2006

    • Inventor(s)
      竹内彰敏
    • Industrial Property Rights Holder
      高知工科大学, オートマックス(株)
    • Filing Date
      2006-02-13
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 膜厚測定システム,膜厚測定方法,及び,これらに使用される超音波探触子の取付構造2006

    • Inventor(s)
      竹内 彰敏
    • Industrial Property Rights Holder
      高知工科大学, オートマックス(株)
    • Filing Date
      2006-02-13
    • Related Report
      2005 Annual Research Report
  • [Patent(Industrial Property Rights)] 膜厚較正曲線の取得方法2006

    • Inventor(s)
      竹内 彰敏
    • Industrial Property Rights Holder
      高知工科大学, オートマックス(株)
    • Filing Date
      2006-02-13
    • Related Report
      2005 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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