Method for assessing applicability of an artificial flaw as a small initial crack for fatigue limit evaluation and its application to a drill hole and an FIB processed sharp notch in annealed 0.45% carbon steel

Junji Sakamoto, Yoshimasa Takahashi, Yuuta Aono, Hiroshi Noguchi

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

In this study, we propose a method for assessing the applicability of an artificial flaw as a small initial crack for fatigue limit evaluation. The proposed method is applied to drill holes and sharp notches introduced using a focused ion beam (FIB) technique in annealed 0.45% carbon steel. It is found that under rotating bending fatigue, an FIB notch can be used as a small initial crack for fatigue limit evaluation, whereas a drill hole cannot, for √area of -50 μm. Here, √area is the square root of the area obtained by projecting the defect onto a plane perpendicular to the load axial direction. The results indicate that an FIB notch can be used as a small initial crack for fatigue limit evaluation in a greater number of materials than those in which a drill hole can be used.

元の言語英語
ジャーナルJournal of Testing and Evaluation
41
発行部数2
DOI
出版物ステータス出版済み - 3 2013

Fingerprint

Focused ion beams
Carbon steel
Fatigue of materials
Cracks
Defects
Axial loads

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

これを引用

@article{0d1fb34edebb4691972924584052f677,
title = "Method for assessing applicability of an artificial flaw as a small initial crack for fatigue limit evaluation and its application to a drill hole and an FIB processed sharp notch in annealed 0.45{\%} carbon steel",
abstract = "In this study, we propose a method for assessing the applicability of an artificial flaw as a small initial crack for fatigue limit evaluation. The proposed method is applied to drill holes and sharp notches introduced using a focused ion beam (FIB) technique in annealed 0.45{\%} carbon steel. It is found that under rotating bending fatigue, an FIB notch can be used as a small initial crack for fatigue limit evaluation, whereas a drill hole cannot, for √area of -50 μm. Here, √area is the square root of the area obtained by projecting the defect onto a plane perpendicular to the load axial direction. The results indicate that an FIB notch can be used as a small initial crack for fatigue limit evaluation in a greater number of materials than those in which a drill hole can be used.",
author = "Junji Sakamoto and Yoshimasa Takahashi and Yuuta Aono and Hiroshi Noguchi",
year = "2013",
month = "3",
doi = "10.1520/JTE20120176",
language = "English",
volume = "41",
journal = "Journal of Testing and Evaluation",
issn = "0090-3973",
publisher = "American Society for Testing and Materials",
number = "2",

}

TY - JOUR

T1 - Method for assessing applicability of an artificial flaw as a small initial crack for fatigue limit evaluation and its application to a drill hole and an FIB processed sharp notch in annealed 0.45% carbon steel

AU - Sakamoto, Junji

AU - Takahashi, Yoshimasa

AU - Aono, Yuuta

AU - Noguchi, Hiroshi

PY - 2013/3

Y1 - 2013/3

N2 - In this study, we propose a method for assessing the applicability of an artificial flaw as a small initial crack for fatigue limit evaluation. The proposed method is applied to drill holes and sharp notches introduced using a focused ion beam (FIB) technique in annealed 0.45% carbon steel. It is found that under rotating bending fatigue, an FIB notch can be used as a small initial crack for fatigue limit evaluation, whereas a drill hole cannot, for √area of -50 μm. Here, √area is the square root of the area obtained by projecting the defect onto a plane perpendicular to the load axial direction. The results indicate that an FIB notch can be used as a small initial crack for fatigue limit evaluation in a greater number of materials than those in which a drill hole can be used.

AB - In this study, we propose a method for assessing the applicability of an artificial flaw as a small initial crack for fatigue limit evaluation. The proposed method is applied to drill holes and sharp notches introduced using a focused ion beam (FIB) technique in annealed 0.45% carbon steel. It is found that under rotating bending fatigue, an FIB notch can be used as a small initial crack for fatigue limit evaluation, whereas a drill hole cannot, for √area of -50 μm. Here, √area is the square root of the area obtained by projecting the defect onto a plane perpendicular to the load axial direction. The results indicate that an FIB notch can be used as a small initial crack for fatigue limit evaluation in a greater number of materials than those in which a drill hole can be used.

UR - http://www.scopus.com/inward/record.url?scp=84875423256&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84875423256&partnerID=8YFLogxK

U2 - 10.1520/JTE20120176

DO - 10.1520/JTE20120176

M3 - Article

AN - SCOPUS:84875423256

VL - 41

JO - Journal of Testing and Evaluation

JF - Journal of Testing and Evaluation

SN - 0090-3973

IS - 2

ER -