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No.1001 2006創刊号 軸受の残存疲労寿命予測 第3報:漏洩表面波の適用

カテゴリー 論文
筆者 研究開発センター 電子システム研究部 貴治雅博 
研究開発センター 電子システム研究部 工学博士 小熊規泰
要旨 The purpose of this study is to analyze the fatigue rate of bearings by a non-destructive procedure. In the previous studies, the authors proposed an X-ray diffraction method and a horizontally polarized surface shear wave method. However, hardened ball bearings were not considered. In this paper, a leaky Rayleigh wave (LR wave) method has been discussed. An ultrasonic transducer has been developed, which can generate LR waves propagating in the subsurface of inner raceways. An LR wave velocity measurement system has been constructed with this transducer. High accuracy data within ±0.37m/s standard deviation has been obtained. A relationship between the fatigue rate and the LR wave velocity has been established. From the experimental results, it can be concluded that the fatigue rate of ball bearings can be predicted by the LR wave velocity.
キーワード rolling bearing, fatigue rate, nondestructive evaluation, ultrasonic transducer, leaky Rayleigh wave
関連リンク

小熊規泰:軸受の残存疲労寿命予測 第1報:X線回折法の適用, Koyo Engineering Journal, No. 161 (2002)26.
小熊規泰, 三上 剛:軸受の残存疲労寿命予測 第2報:表面SH波の適用, Koyo Engineering Journal, No.162(2002)38.

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