A practical expression for evaluating the small shear-mode fatigue crack threshold in bearing steel

Saburo Okazaki; Hisao Matsunaga; Tohru Ueda; Hiroki Komata; Masahiro Endo

doi:10.1016/j.tafmec.2014.07.016

A practical expression for evaluating the small shear-mode fatigue crack threshold in bearing steel

Saburo Okazaki, Hisao Matsunaga, Tohru Ueda, Hiroki Komata, Masahiro Endo

Strength of materials

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The ranges of the threshold stress intensity factor (SIF), δK_IIth and δK_IIIth, for small shear-mode cracks in bearing steel are measured using torsional fatigue testing under static compression. The threshold values are described as a function of the crack size and the crack-face interference. In addition, to simplify the evaluation of the shear-mode threshold, a single parameter, K_τ, is introduced to represent the SIF of shear-mode cracks. Moreover, a practical expression for approximating K_τ is proposed on the basis of the area parameter model. Finally, the threshold SIF range δK_τth is found to exhibit a dependence on the crack size similar to that of small mode I cracks, i.e., δK_τth∝(area)1/3, for the regime of small shear-mode cracks with area values ranging from 0.01 to 1mm.

Original language	English
Pages (from-to)	161-169
Number of pages	9
Journal	Theoretical and Applied Fracture Mechanics
Volume	73
DOIs	https://doi.org/10.1016/j.tafmec.2014.07.016
Publication status	Published - Oct 1 2014

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanical Engineering
Applied Mathematics

Access to Document

10.1016/j.tafmec.2014.07.016

Fingerprint Dive into the research topics of 'A practical expression for evaluating the small shear-mode fatigue crack threshold in bearing steel'. Together they form a unique fingerprint.

Cite this

@article{bc65ca88954541639880ac80487c2e6b,

title = "A practical expression for evaluating the small shear-mode fatigue crack threshold in bearing steel",

abstract = "The ranges of the threshold stress intensity factor (SIF), δKIIth and δKIIIth, for small shear-mode cracks in bearing steel are measured using torsional fatigue testing under static compression. The threshold values are described as a function of the crack size and the crack-face interference. In addition, to simplify the evaluation of the shear-mode threshold, a single parameter, Kτ, is introduced to represent the SIF of shear-mode cracks. Moreover, a practical expression for approximating Kτ is proposed on the basis of the area parameter model. Finally, the threshold SIF range δKτth is found to exhibit a dependence on the crack size similar to that of small mode I cracks, i.e., δKτth∝(area)1/3, for the regime of small shear-mode cracks with area values ranging from 0.01 to 1mm.",

author = "Saburo Okazaki and Hisao Matsunaga and Tohru Ueda and Hiroki Komata and Masahiro Endo",

year = "2014",

month = oct,

day = "1",

doi = "10.1016/j.tafmec.2014.07.016",

language = "English",

volume = "73",

pages = "161--169",

journal = "Theoretical and Applied Fracture Mechanics",

issn = "0167-8442",

publisher = "Elsevier",

}

TY - JOUR

T1 - A practical expression for evaluating the small shear-mode fatigue crack threshold in bearing steel

AU - Okazaki, Saburo

AU - Matsunaga, Hisao

AU - Ueda, Tohru

AU - Komata, Hiroki

AU - Endo, Masahiro

PY - 2014/10/1

Y1 - 2014/10/1

N2 - The ranges of the threshold stress intensity factor (SIF), δKIIth and δKIIIth, for small shear-mode cracks in bearing steel are measured using torsional fatigue testing under static compression. The threshold values are described as a function of the crack size and the crack-face interference. In addition, to simplify the evaluation of the shear-mode threshold, a single parameter, Kτ, is introduced to represent the SIF of shear-mode cracks. Moreover, a practical expression for approximating Kτ is proposed on the basis of the area parameter model. Finally, the threshold SIF range δKτth is found to exhibit a dependence on the crack size similar to that of small mode I cracks, i.e., δKτth∝(area)1/3, for the regime of small shear-mode cracks with area values ranging from 0.01 to 1mm.

AB - The ranges of the threshold stress intensity factor (SIF), δKIIth and δKIIIth, for small shear-mode cracks in bearing steel are measured using torsional fatigue testing under static compression. The threshold values are described as a function of the crack size and the crack-face interference. In addition, to simplify the evaluation of the shear-mode threshold, a single parameter, Kτ, is introduced to represent the SIF of shear-mode cracks. Moreover, a practical expression for approximating Kτ is proposed on the basis of the area parameter model. Finally, the threshold SIF range δKτth is found to exhibit a dependence on the crack size similar to that of small mode I cracks, i.e., δKτth∝(area)1/3, for the regime of small shear-mode cracks with area values ranging from 0.01 to 1mm.

UR - http://www.scopus.com/inward/record.url?scp=84908067855&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84908067855&partnerID=8YFLogxK

U2 - 10.1016/j.tafmec.2014.07.016

DO - 10.1016/j.tafmec.2014.07.016

M3 - Article

AN - SCOPUS:84908067855

VL - 73

SP - 161

EP - 169

JO - Theoretical and Applied Fracture Mechanics

JF - Theoretical and Applied Fracture Mechanics

SN - 0167-8442

ER -