著者
橋本 翔 小俣 弘樹 松永 久生
出版者
一般社団法人 日本機械学会
雑誌
日本機械学会論文集 (ISSN:21879761)
巻号頁・発行日
vol.83, no.852, pp.16-00585-16-00585, 2017 (Released:2017-08-25)
参考文献数
17

Rolling contact fatigue (RCF) tests were conducted using rolling bearings with a micro-drilled hole on the raceway. In all the tests, fatigue crack initiated at the edge near the bottom of the hole, and then propagated by shear mode. Even in the unbroken specimens tested up to N = 1×108 cycles, a short fatigue crack was found at the edge. By using stress intensity factor (SIF) range calculated for initial defect size, fatigue life data were uniformly gathered inside a small band irrespective of the diameter and depth of the hole. In addition, it was found that the crack size dependency of threshold SIF range, which is well-known for mode I fatigue crack, also exists in mode II fatigue crack emanating under the rolling contact. The values of threshold SIF ranges obtained by the RCF tests were in good agreement with those obtained in the torsional fatigue tests under a static compression.

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日本機械学会論文集 Vol. 82(2017) No. 852「転がり軸受のはく離強度に及ぼす微小欠陥寸法の影響(第2報:応力拡大係数に基づくドリル穴を有する転がり軸受のはく離強度の評価)」https://t.co/stRAYUgPKv
日本機械学会論文集 Vol. 82(2017) No. 852「転がり軸受のはく離強度に及ぼす微小欠陥寸法の影響(第2報:応力拡大係数に基づくドリル穴を有する転がり軸受のはく離強度の評価)」https://t.co/stRAYUgPKv
日本機械学会論文集 Vol. 82(2017) No. 852「転がり軸受のはく離強度に及ぼす微小欠陥寸法の影響(第2報:応力拡大係数に基づくドリル穴を有する転がり軸受のはく離強度の評価)」https://t.co/stRAYUgPKv

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