Friction stir welding (FSW) is a newly developed welding technique that can join aluminum alloys of low fusion weldability. The conventional hole-drilling method does not consider the nonuniform in-plane stress around the drilled hole, it is no longer valid for the residual stress of FSW which has high stress gradient. However, assuming the relaxation of in-plane nonuniform residual stress to be uniform on a small increment of the boundary of the hole, the recently developed Moire´ interferometry incremental hole-drilling (MIIHD) method can be used. Residual stress of a thin plate of friction stir welded aluminum alloy was studied by MIIHD. The longitudinal residual stress distribution in the transversal direction and through the thickness was obtained and compared with results by strain gage method.
Issue Section:
Technical Papers
1.
Dawes, C. J., 1995, “An Introduction to Friction Stir Welding and its Development,” Mental Fabrication, Vol. 1, pp. 13–16.
2.
Thomas
, W. M.
, and Nicholas
, E. D.
, 1997
, “Friction Stir Welding for the Transportation Industries
,” Mater. Des.
, 16
(4/6
), pp. 269
–273
.3.
Shinoda
, T.
, and Kondo
, Y.
, 1997, “Friction Stir Welding of Aluminum Plate,” Welding International, 11(3), pp. 179. 4.
Dawes
, C. J.
, and Thomas
, W. M.
, 1996
, “Friction Stir Process Welds Aluminum Alloys
,” Weld. J. (Miami)
, 75
(3
), pp. 41
–45
.5.
Lu, J. Edit, Editorial Board, James, M., Lu, J., and Roy, G., 1996, Handbook of Measurement of Residual Stresses, The Fairmont Press, INC.
6.
Warren, B. E., 1969, X-ray Diffraction, Addison-Wesley, Reading, MA.
7.
Nakayama
, Y.
, Takaai
, T.
, and Kimura
, S.
, 1993
, “Evaluation of Surface Residual Stresses in Cold-rolled 5083 Aluminum Alloy by X-ray Method
,” Mater. Trans., JIM
, 34
(6
), pp. 496
–503
.8.
Allen
, A. J.
, Hutchings
, M. T.
, Windsor
, C. G.
, and Andreani
, C.
, 1985
, “Neutron Diffraction Method for the Study of Residual Stress Fields
,” Adv. Phys.
, 34
(4
), pp. 445
–473
.9.
Ueda
, Y.
, and Fukuda
, K.
, 1980, “New Measuring Method of Three Dimensional Welding Residual Stresses Based on Newly Proposed Principle of Inherent Strain,” Naval Architecture and Engineering, 18, pp. 146–16310.
Ueda
, Y.
, and Fukuda
, K.
, 1989
, “New Measuring Method of Three Dimensional Residual Stresses in Long Welded Joints Using Inherent Strains as Parameters-lz Method
,” J. Mater. Tech.
,111
, pp. 1
–8
.11.
Mathar
, J.
, 1934
, “Determination of Initial Stresses by Measuring the Deformations around Drilled Holes
,” Trans. ASME
, 56
, pp. 249
–254
.12.
Rendler
, N. J.
, and Vigness
, I.
, 1966
, “Hole-drilling Strain-Gage Method of Measuring Residual Stresses
,” Exp. Mech.
, 6
(12
), pp. 577
–586
.13.
Niku-Lari
, A.
, Lu
, J.
, and Flavenot
, J. F.
, 1985
, “Measurement of Residual Stress Distribution by the Incremental Hole Drilling Method
,” Exp. Mech.
, 25
(2
), pp. 175
–185
.14.
Flaman
, M. T.
, and Manning
, B. H.
, 1985
, “Determination of Residual Stress Variation with Depth by the Hole-drilling Method
,” Exp. Mech.
, 25
(3
), pp. 205
–207
.15.
Lu
, J.
, and Flavenot
, J. F.
, 1989
, “Applications of the Incremental Hole-drilling Method for Measurements of Residual Stress Distribution
,” Exp. Tech.
, 13
(11
), pp. 18
–24
.16.
Schajer
, G. S.
, 1988
, “Measurement of Non-uniform Residual Stresses using the Hole Drilling Method, Part I—Stresses Calculation Procedures
,” ASME J. Eng. Mater. Technol.
, 10
(4
), pp. 338
–343
.17.
Schajer
, G. S.
, 1988
, “Measurement of Non-uniform Residual Stresses using the Hole Drilling Method, Part II—Practical Applications of the Integral Method
,” ASME J. Eng. Mater. Technol.
, 10
(4
), pp. 344
–349
.18.
Wu
, Z.
, Lu
, J.
, and Han
, B.
, 1998
, “Study of Residual Stress Distribution by a Combined Method of Moire´ Interferometry and Incremental Hole-drilling—Part I, Theory
,” ASME J. Appl. Mech.
, 65
(9
), pp. 837
–843
.19.
Wu
, Z.
, Lu
, J.
, and Han
, B.
, 1998
, “Study of Residual Stress Distribution by a Combined Method of Moire´ Interferometry and Incremental Hole-drilling—Part II, Implementation
,” ASME J. Appl. Mech.
, 65
(9
), pp. 844
–850
.20.
Post, D., Han, B., and Ifju, P., 1994, High Sensitivity Moire´, New York: Springer-Verlag.
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