METAL SHEET BENT PORTION FATIGUE CRACK GROWTH SUPPRESSING METHOD AND AUTOMOTIVE PART

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United States of America

APP PUB NO 20240416405A1
SERIAL NO

18700790

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A metal sheet bent portion fatigue crack growth suppressing method suppresses a growth of a fatigue crack generated in a bent portion formed by bending a metal sheet, and includes applying a plastic strain at least in a range from a bending start point to a bending end point on a bend inner side of the bent portion in a direction orthogonal to a valley line direction of the bent portion at an interval equal to or larger than a sheet thickness of the metal sheet in the valley line direction so as to generate a compressive residual stress.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATION2-3 UCHISAIWAI-CHO 2-CHOME CHIYODA-KU TOKYO 1000011 JAPAN

International Classification(s)

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  • 2022 Application Filing Year
  • B21D Class
  • 487 Applications Filed
  • 186 Patents Issued To-Date
  • 38.20 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20222023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
YAMAGUCHI, Naoki Tokyo, JP 88 671

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  • B21D Class
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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges13693601 - 100100200300400500600700800900100011001200130014001500

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