Crack tip dislocations and its shielding effect

Masaki Tanaka, Yumi Hoshino, Alexander Hartmaier, Kenji Higashida

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

抄録

Two dimensional simulations of discrete dislocation dynamics were carried out to clarify a shielding effect due to dislocations at a crack tip. The configuration of dislocations around the crack tip was calculated under the conditions of mode I tensile load at high temperatures. The stress field around the crack tip due to dislocations was found to be compressive, accommodating mode I stress intensity at the crack tip. In order to experimentally confirm the stress accommodation, infrared photoelastic observation was also performed in a specimen pre-deformed at high temperatures. The experimental result is in good agreement with a simulated infrared photoelastic image derived from the stress field calculated.

本文言語英語
ホスト出版物のタイトルSelected, peer reviewed papers from The Sixth Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
出版社Trans Tech Publications Ltd
ページ1833-1836
ページ数4
PART 3
ISBN(印刷版)0878494626, 9780878494620
DOI
出版ステータス出版済み - 2007
イベント6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6 - Jeju, 韓国
継続期間: 11月 5 200711月 9 2007

出版物シリーズ

名前Materials Science Forum
番号PART 3
561-565
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

その他

その他6th Pacific Rim International Conference on Advanced Materials and Processing, PRICM 6
国/地域韓国
CityJeju
Period11/5/0711/9/07

!!!All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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