Effect of small defect on the flaking strength of rolling bearings (Part 2: Evaluation of the flaking strength of rolling bearing having a small drilled hole based on stress intensity factor)
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 sh...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Japanese |
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The Japan Society of Mechanical Engineers
2017-07-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/83/852/83_16-00585/_pdf/-char/en |
| _version_ | 1798015251596181504 |
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| author | Sho HASHIMOTO Hiroki KOMATA Hisao MATSUNAGA |
| author_facet | Sho HASHIMOTO Hiroki KOMATA Hisao MATSUNAGA |
| author_sort | Sho HASHIMOTO |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-11T15:30:22Z |
| format | Article |
| id | doaj.art-6311c40a42ea4c69bfbe2ae066dda21c |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T15:30:22Z |
| publishDate | 2017-07-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-6311c40a42ea4c69bfbe2ae066dda21c2022-12-22T04:16:09ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612017-07-018385216-0058516-0058510.1299/transjsme.16-00585transjsmeEffect of small defect on the flaking strength of rolling bearings (Part 2: Evaluation of the flaking strength of rolling bearing having a small drilled hole based on stress intensity factor)Sho HASHIMOTO0Hiroki KOMATA1Hisao MATSUNAGA2Kyushu Univ. Graduate School of EngineeringCore Technology R&D Center, NSK Ltd.Kyushu Univ. Faculty of engineeringRolling 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.https://www.jstage.jst.go.jp/article/transjsme/83/852/83_16-00585/_pdf/-char/enrolling contact fatiguebearing steelflakingdrilled holeshear-mode crackstress intensity factor |
| spellingShingle | Sho HASHIMOTO Hiroki KOMATA Hisao MATSUNAGA Effect of small defect on the flaking strength of rolling bearings (Part 2: Evaluation of the flaking strength of rolling bearing having a small drilled hole based on stress intensity factor) Nihon Kikai Gakkai ronbunshu rolling contact fatigue bearing steel flaking drilled hole shear-mode crack stress intensity factor |
| title | Effect of small defect on the flaking strength of rolling bearings (Part 2: Evaluation of the flaking strength of rolling bearing having a small drilled hole based on stress intensity factor) |
| title_full | Effect of small defect on the flaking strength of rolling bearings (Part 2: Evaluation of the flaking strength of rolling bearing having a small drilled hole based on stress intensity factor) |
| title_fullStr | Effect of small defect on the flaking strength of rolling bearings (Part 2: Evaluation of the flaking strength of rolling bearing having a small drilled hole based on stress intensity factor) |
| title_full_unstemmed | Effect of small defect on the flaking strength of rolling bearings (Part 2: Evaluation of the flaking strength of rolling bearing having a small drilled hole based on stress intensity factor) |
| title_short | Effect of small defect on the flaking strength of rolling bearings (Part 2: Evaluation of the flaking strength of rolling bearing having a small drilled hole based on stress intensity factor) |
| title_sort | effect of small defect on the flaking strength of rolling bearings part 2 evaluation of the flaking strength of rolling bearing having a small drilled hole based on stress intensity factor |
| topic | rolling contact fatigue bearing steel flaking drilled hole shear-mode crack stress intensity factor |
| url | https://www.jstage.jst.go.jp/article/transjsme/83/852/83_16-00585/_pdf/-char/en |
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