表面き裂無害化技術の応用による疲労限度設計された高強度鋼の信頼性向上

• 安藤 柱

  横浜国立大学名誉教授

• 南 起祐

  釜慶大学材料工学科

• 金 玟憲

  釜慶大学マリンデザイン融合工学科

• 高橋 宏治

  横浜国立大学大学院工学研究院

書誌事項

タイトル別名

• Improvement of Reliability of Fatigue Properties of High Strength Steel Applying Surface Crack Non-damaging Technology
• ヒョウメン キレツ ムガイカ ギジュツ ノ オウヨウ ニ ヨル ヒロウ ゲンド セッケイ サレタ コウキョウドコウ ノ シンライ セイコウ ジョウ

抄録

Recently, a technique has been developed to render harmless surface cracks which reduce the fatigue limit of metals by 20～60% by the effects of compres-sive residual stress induced by shot peening. This technique is called as sur-face crack non-damaging technology. For the purpose of contributing to reliability improvement of high strength steel equipment by surface crack non-damaging technology, the following research was carried out:<br>(a) The effects of aspect ratio of surface crack on maximum harmless crack depth (a_hlm) of a high strength was calculated for three residual stress distributions. <br>(b) Assuming the value of safety factor, the relationship between the maximum allowable crack depth (a_crN) and a_hlm was investigated. <br>(c) The relationship between maximum detectable crack depth by non-destructive inspection (a_NDI) and a_hlm was compared, assuming that nondestructive inspection could detect the crack with sufficient probability. <br>(d) The relationship between a_hlm, a_NDI and a_hlm were compared.

収録刊行物

• 圧力技術

  圧力技術 58 (5), 263-271, 2020

  一般社団法人 日本高圧力技術協会

キーワード

• Fatigue
• Surface Cracks
• Shot Peening
• Residual Stress
• High Strength Steel

詳細情報

• CRID: 1391975276375034880
• NII論文ID: 130007931409
• NII書誌ID: AN00011762
• DOI: 10.11181/hpi.58.263
• ISSN: 13479598
• ISSN: 03870154
• NDL書誌ID: 030695106
• Web Site: http://id.ndl.go.jp/bib/030695106
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I030695106
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可