As a part of the welding fabrication procedure development for the next generation space shuttle external tank, aluminum-lithium wide-panel specimens were used to assess the interactions between repair weld residual stresses and external loading conditions. The detailed residual stress development in the wide panel specimens with a repair weld was analyzed using an advanced finite element procedure. External tension loading effects were then incorporated in the residual stress model to study the interactions between the residual stress field and external tensile loading. Wide-panel tensile tests were also performed to extract photo strain and strain-gage results. A good agreement between the finite element and experimental results was obtained. The results demonstrate that the presence of high tensile residual stresses within a repair weld has a drastic impact on the stress/strain distribution in the wide panel specimens subjected to external loading. Its implications on structural integrity are discussed in light of the wide-panel results. The effects of post-welding mechanical treatment such as planishing were also examined.
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Effects of Repair Weld Residual Stresses on Wide-Panel Specimens Loaded in Tension
P. Dong,
P. Dong
Battelle, 505 King Avenue, Columbus, OH 43201-2693
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J. K. Hong,
J. K. Hong
Battelle, 505 King Avenue, Columbus, OH 43201-2693
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J. Zhang,
J. Zhang
Battelle, 505 King Avenue, Columbus, OH 43201-2693
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P. Rogers,
P. Rogers
Marshall Space Flight Center, Huntsville, AL 35812
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J. Bynum,
J. Bynum
Marshall Space Flight Center, Huntsville, AL 35812
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S. Shah
S. Shah
Lockheed Martin Manned Space Systems, Huntsville, AL 35812
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P. Dong
Battelle, 505 King Avenue, Columbus, OH 43201-2693
J. K. Hong
Battelle, 505 King Avenue, Columbus, OH 43201-2693
J. Zhang
Battelle, 505 King Avenue, Columbus, OH 43201-2693
P. Rogers
Marshall Space Flight Center, Huntsville, AL 35812
J. Bynum
Marshall Space Flight Center, Huntsville, AL 35812
S. Shah
Lockheed Martin Manned Space Systems, Huntsville, AL 35812
J. Pressure Vessel Technol. May 1998, 120(2): 122-128 (7 pages)
Published Online: May 1, 1998
Article history
Received:
June 1, 1997
Revised:
December 11, 1997
Online:
February 11, 2008
Citation
Dong, P., Hong, J. K., Zhang, J., Rogers, P., Bynum, J., and Shah, S. (May 1, 1998). "Effects of Repair Weld Residual Stresses on Wide-Panel Specimens Loaded in Tension." ASME. J. Pressure Vessel Technol. May 1998; 120(2): 122–128. https://doi.org/10.1115/1.2842229
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