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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Laser Peening Effects on Friction Stir Welding

Laser Peening Effects on Friction Stir Welding

Hatamleh, Omar
Nasa Technical Reports Server (Ntrs)

Paperback

General Political Science

ISBN10: 1289043272
ISBN13: 9781289043278
Publisher: Bibliogov
Published: Jun 27 2013
Pages: 54
Weight: 0.25
Height: 0.11 Width: 7.44 Depth: 9.69
Language: English
Friction Stir Welding (FSW) is a welding technique that uses frictional heating combined with forging pressure to produce high strength bonds. It is attractive for aerospace applications. Although residual stresses in FSW are generally lower when compared to conventional fusion welds, recent work has shown that significant tensile residual stresses can be present in the weld after fabrication. Therefore, laser shock peening was investigated as a means of moderating the tensile residual stresses produced during welding. This slide presentation reviews the effect of Laser Peening on the weld, in tensile strength, strain, surface roughness, microhardness, surface wear/friction, and fatigue crack growth rates. The study concluded that the laser peening process can result in considerable improvement to crack initiaion, propagation and mechanical properties in FSW.

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