Enhancement of compressive stresses by application of shaped temporal pulses in confinement layer free nanosecond laser shock peening

被引：3
作者：
Banerjee, Saumyabrata [1 ]
Spear, Jacob [1 ]
机构：
[1] Rutherford Appleton Lab, Cent Laser Facil, Sci & Technol Facil Counsel, UKRI,Harwell Sci & Innovat Campus, Didcot OX11 0QX, England
来源：
OPTICS AND LASER TECHNOLOGY | 2024年 / 175卷
关键词：
Laser shock peening; High power laser; Temporal pulse shaping;
D O I：
10.1016/j.optlastec.2024.110790
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on enhancement of compressive stress observed both in tungsten as well as tungsten alloy when a shaped double pulse was utilized for confinement layer free nanosecond laser shock peening (CLF-ns-LSP) compared to a single pulse. A threefold enhancement of peak compressive stresses was observed in TAM7525 (tungsten-copper alloy) for shaped double pulses. Further, we investigate the effect of changes to the parameters of the double pulse to the induced compressive stresses. These experiments and observations show superior laser shock peening (LSP) performance for application of shaped double pulse compared to traditionally used single pulse.
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页数：7
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