Laser shock peening with tailored multiple laser beams
US5911891A · kind A · utility
37Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1997 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Sep 11, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/356
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Method of changing the residual compressive stresses of an area of a workpiece by tailoring multiple laser beams applied to the workpiece. In one embodiment, a relatively long duration laser pulse is applied to the workpiece followed by a relatively short duration laser pulse. Other tailoring embodiments used to increase the total residual compressive stress of workpieces include blending two laser pulses, or splicing them utilizing a first short sliced-type beam combined with a relatively long duration, high powered gaussian laser beam pulse. A third embodiment utilizes two or more laser beams or pulses of different wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.