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TECHNICAL PAPERS

Study of Nonuniform In-Plane and In-Depth Residual Stress of Friction Stir Welding

[+] Author and Article Information
Min Ya, Fulong Dai

Department of Engineering Mechanics, Tsinghua University, Beijing, 100084 China

Jian Lu

LASMIS, Université de Technologié de Troyes, 10010 Troyes, France

J. Pressure Vessel Technol 125(2), 201-208 (May 05, 2003) (8 pages) doi:10.1115/1.1545767 History: Received January 29, 2002; Revised November 25, 2002; Online May 05, 2003
Copyright © 2003 by ASME
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References

Figures

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Relaxation of local residual stresses
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Surface displacement fields due to normal nodal forces acting on two adjacent elements of boundary of the hole in the first 0.1 mm layer
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Surface displacement fields due to shear nodal forces acting on two adjacent elements of boundary of the hole in the first 0.1 mm layer
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Crown surface of the friction stir weld aluminum plate
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A schematic diagram of the root surface of the friction stir weld specimen and the position of the drilled holes  
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Optical and mechanical setup of the Moiré interferometry and hole-drilling system
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Typical Moiré fringes of four holes at depth of 0.4 mm—(a) hole 1 depth=0.4 mm, (b) hole 2 depth=0.4 mm, (c) hole 3 depth=0.4 mm (d) hole 4 depth=0.4 mm
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Magnified view of Ux field—(a) hole 1 depth=0.7 mm, (b) hole 2 depth=0.7 mm
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Residual stress distribution at various depths of four regions around hole 2—(a) region R1, (b) region R2, (c) region R3, (d) region R4
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Residual stress distribution in transversal direction and at various depths of FSW specimen—(a) longitudinal residual stress, (b) transversal residual stress
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Comparison of residual stress results determined from FSW specimen in region R3 and A, region R4 and B by MIIHDM and integral strain gauge hole-drilling method

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