Improvement in Fatigue Strength of Ultra-high Strength Steel Sheets by Hole Thickening
-
- ABE Yohei
- 豊橋技術科学大学大学院工学研究科
-
- KADARNO Purwo
- 豊橋技術科学大学
-
- MORI Ken-ichiro
- 豊橋技術科学大学大学院工学研究科
-
- ABE Tatsuro
- 豊橋技術科学大学
Bibliographic Information
- Other Title
-
- 超高張力鋼板の穴縁部増肉加工による疲労強度の向上
- チョウコウチョウリョク コウバン ノ ケツエンブ ゾウニク カコウ ニ ヨル ヒロウ キョウド ノ コウジョウ
Search this article
Abstract
The edge of a punched hole was thickened by burring processes to improve the fatigue strength of punched ultra-high strength steel sheets. In this process, the sheet was punched by the bottom of the punch, and subsequently the hole edge was thickened by the taper of the punch and the corner step of the die. The fatigue strength of the hole edge thickened by burring was higher than that of the punched hole edge. The punching and the burring were combined into the punching process including thickening. The step height of the die was optimised to increase the height of the hole edge. The quality of the sheared edge for the thickened punched sheet was improved by ironing with the taper of the punch, and compressive residual stress was generated around the hole edge. It was found that the punching process including thickening is effective in improving the fatigue strength of the hole edge in ultra-high strength steel sheets and in preventing the occurrence of delayed fracture.
Journal
-
- Journal of the Japan Society for Technology of Plasticity
-
Journal of the Japan Society for Technology of Plasticity 55 (645), 944-948, 2014
The Japan Society for Technology of Plasticity
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390001206499565184
-
- NII Article ID
- 130004705482
- 40020246618
-
- NII Book ID
- AN00135062
-
- ISSN
- 18820166
- 00381586
-
- NDL BIB ID
- 025878320
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed