الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Over.the past decade, there has been an increasing demand on the utilization of thin plate steel (defined as being less than 10 mm thick) for the construction of both
commercial and naval ships.
Significant distortion has been encountered during the welding process of these plates, due to the non-uniform heating of material producing residual stresses and plastic strains, ultimately reducing the overall rigidity of ship structures, and necessitating costly and time consuming straightening procedures.
Several mechanical as well as thermal mitigation methods have been proposed for solving this problem, each having its merits and disadvantages.
The objective of the present study is to contribute to the mitigation techniques .existent for the elimination of the residual stresses and deformations resulting from welding. The proposed new technique in this study acts mainly to reduce the residual stresses and the buckling deformation which was found to be the major contributor to thin
panel distortion.
The following main aspects are covered:
1. The types of distortion in ship panel structures.
2. Effects of residual stresses on the buckling distortion.
3. Production strategy emphasizing residual stresses minimization.
4. Introduction of the proposed technique for minimizing the residual stresses in thin butt welded plates by using computer simulation software.
, 5. Experimental work for validation of buckling distortion minimization by the
proposed technique.
The work concemmg production strategy primarily served to put welding simulation and residual stress evaluation into an overall perspective and to describe the factors motivating the present work. However; in addition to merely describing the