Quantitative Evaluation of the Flaking Strength of Rolling Bearings with Small Defects

Hisao Matsunaga, Sho Hashimoto, Hiroki Komata

Research output: Contribution to journalArticle

Abstract

Rolling contact fatigue (RCF) tests were conducted on rolling bearings, with holes micro-drilled at the mid-point of the tracks. In all of the RCF tests, fatigue cracks initiated at the edge, near the base of the drilled holes, later propagating by shear-mode. Even in the un-flaked specimens tested up to N = 2×10 8 cycles, short fatigue cracks were discovered at the edges. Using the stress intensity factor (SIF) range, as calculated for the initial defect size, fatigue life data were uniformly gathered inside a narrow band, irrespective of the diameters and depths of the holes. In addition, it was determined that the crack-size dependency of the threshold SIF range, well-known for Mode I fatigue cracks, also exists for Mode II fatigue cracks, as produced after rolling contact. The values of the threshold SIF range obtained by the RCF tests were in good agreement with those obtained in the torsional fatigue tests under static compression.

Original languageEnglish
Pages (from-to)460-467
Number of pages8
JournalProcedia Structural Integrity
Volume7
DOIs
Publication statusPublished - Jan 1 2017

Fingerprint

Bearings (structural)
Fatigue of materials
Defects
Stress intensity factors
Compaction
Cracks
Fatigue cracks

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Civil and Structural Engineering
  • Materials Science(all)

Cite this

Quantitative Evaluation of the Flaking Strength of Rolling Bearings with Small Defects. / Matsunaga, Hisao; Hashimoto, Sho; Komata, Hiroki.

In: Procedia Structural Integrity, Vol. 7, 01.01.2017, p. 460-467.

Research output: Contribution to journalArticle

@article{75fc8cc0a0b644769b95dcb12cd9bfc9,
title = "Quantitative Evaluation of the Flaking Strength of Rolling Bearings with Small Defects",
abstract = "Rolling contact fatigue (RCF) tests were conducted on rolling bearings, with holes micro-drilled at the mid-point of the tracks. In all of the RCF tests, fatigue cracks initiated at the edge, near the base of the drilled holes, later propagating by shear-mode. Even in the un-flaked specimens tested up to N = 2×10 8 cycles, short fatigue cracks were discovered at the edges. Using the stress intensity factor (SIF) range, as calculated for the initial defect size, fatigue life data were uniformly gathered inside a narrow band, irrespective of the diameters and depths of the holes. In addition, it was determined that the crack-size dependency of the threshold SIF range, well-known for Mode I fatigue cracks, also exists for Mode II fatigue cracks, as produced after rolling contact. The values of the threshold SIF range obtained by the RCF tests were in good agreement with those obtained in the torsional fatigue tests under static compression.",
author = "Hisao Matsunaga and Sho Hashimoto and Hiroki Komata",
year = "2017",
month = "1",
day = "1",
doi = "10.1016/j.prostr.2017.11.113",
language = "English",
volume = "7",
pages = "460--467",
journal = "Procedia Structural Integrity",
issn = "2452-3216",

}

TY - JOUR

T1 - Quantitative Evaluation of the Flaking Strength of Rolling Bearings with Small Defects

AU - Matsunaga, Hisao

AU - Hashimoto, Sho

AU - Komata, Hiroki

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Rolling contact fatigue (RCF) tests were conducted on rolling bearings, with holes micro-drilled at the mid-point of the tracks. In all of the RCF tests, fatigue cracks initiated at the edge, near the base of the drilled holes, later propagating by shear-mode. Even in the un-flaked specimens tested up to N = 2×10 8 cycles, short fatigue cracks were discovered at the edges. Using the stress intensity factor (SIF) range, as calculated for the initial defect size, fatigue life data were uniformly gathered inside a narrow band, irrespective of the diameters and depths of the holes. In addition, it was determined that the crack-size dependency of the threshold SIF range, well-known for Mode I fatigue cracks, also exists for Mode II fatigue cracks, as produced after rolling contact. The values of the threshold SIF range obtained by the RCF tests were in good agreement with those obtained in the torsional fatigue tests under static compression.

AB - Rolling contact fatigue (RCF) tests were conducted on rolling bearings, with holes micro-drilled at the mid-point of the tracks. In all of the RCF tests, fatigue cracks initiated at the edge, near the base of the drilled holes, later propagating by shear-mode. Even in the un-flaked specimens tested up to N = 2×10 8 cycles, short fatigue cracks were discovered at the edges. Using the stress intensity factor (SIF) range, as calculated for the initial defect size, fatigue life data were uniformly gathered inside a narrow band, irrespective of the diameters and depths of the holes. In addition, it was determined that the crack-size dependency of the threshold SIF range, well-known for Mode I fatigue cracks, also exists for Mode II fatigue cracks, as produced after rolling contact. The values of the threshold SIF range obtained by the RCF tests were in good agreement with those obtained in the torsional fatigue tests under static compression.

UR - http://www.scopus.com/inward/record.url?scp=85065957137&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065957137&partnerID=8YFLogxK

U2 - 10.1016/j.prostr.2017.11.113

DO - 10.1016/j.prostr.2017.11.113

M3 - Article

AN - SCOPUS:85065957137

VL - 7

SP - 460

EP - 467

JO - Procedia Structural Integrity

JF - Procedia Structural Integrity

SN - 2452-3216

ER -