Title:
APPARATUS FOR FORMING SHAPE AND CONTOUR IN METAL BY LASER PEENING
Document Type and Number:
Japanese Patent JP2007175777
Kind Code:
A
Abstract:
To provide laser peening for forming a larger curve in thicker metal sections by generating strong stress fairly deep in a component.
A light beam of 10-100 J/pulse is imaged to create an energy fluence of 60-200 J/cm2 on an absorptive layer applied over a metal surface. A tamping layer of water is flowed over the absorptive layer. The absorption of laser light causes a plasma to form and consequently creates a shock wave that induces a deep residual compressive stress into the metal. The metal responds to this residual stress by bending.
Inventors:
HACKEL LLOYD
HARRIS FRITZ
HARRIS FRITZ
Application Number:
JP2007026019A
Publication Date:
July 12, 2007
Filing Date:
February 05, 2007
Export Citation:
Assignee:
UNIV CALIFORNIA
International Classes:
B23K26/00; B23K26/352; B21D11/20; B21D26/00; B21D26/06; B23K26/14; B23K26/18; B23K26/356; C21D1/00; C21D1/09; C21D10/00
Domestic Patent References:
| JPH11135913A | 1999-05-21 | |||
| JPH09277069A | 1997-10-28 | |||
| JPH11162800A | 1999-06-18 | |||
| JPH10153750A | 1998-06-09 |
Foreign References:
| WO1997041267A1 | 1997-11-06 |
Attorney, Agent or Firm:
Kenji Yoshitake
Hiroyuki Nagai
Junpei Okada
Hirohito Katsunuma
Hideyuki Mori
Hiroyuki Nagai
Junpei Okada
Hirohito Katsunuma
Hideyuki Mori
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