The intense temperature fields caused by heat sources in welding frequently lead to distortions and residual stresses in the finished product. Welding distortion is a particular problem in fabricating thin plate structures such as ships. Based on pioneering research by the authors, "Control of Welding Distortion in Thin-Plate Fabrication" reviews distortion test results from trials and shows how outcomes can be modeled computationally. The book provides readers with an understanding of distortion influences and the means to develop distortion-reducing strategies.

The book is structured as an integrated treatment. It opens by reviewing the development of computational welding mechanics approaches to distortion. Following chapters describe the industrial context of stiffened plate fabrication and further chapters provide overviews of distortion mechanics and the modeling approach. A chapter on full-scale welding trials is followed by three chapters that develop modeling strategies through thermal process and thermo-mechanical simulations, based on finite-element analysis. Simplified models are a particular feature of these chapters. A final sequence of chapters explores the simulation of welding distortion in butt welding of thin plates and fillet welding of stiffened plate structures, and shows how these models can be used to optimize design and fabrication methods to control distortion.

"Control of Welding Distortion in Thin-Plate Fabrication" is a comprehensive resource for metal fabricators, engineering companies, welders and welding companies, and practicing engineers and academics with an interest in welding mechanics.
Allows practitioners in the field to minimize distortion during the welding of thin platesProvides computational tools that can give insight into the effects of welding and fabrication proceduresDemonstrates how welding distortion in thin plate fabrications can be minimized through design

Organised crime threatens multiple facets of the United States, including the economy and national security. In fact, the Organised Crime Council was reconvened for the first time in fifteen years to address this continued threat. Organised crime has taken on an increasingly transnational nature, and with more open borders and the expansion of the Internet, criminals endanger the United States not only from within the borders, but beyond. This book examines issues for Congress concerning whether the resources the federal government allocated to organised crime matters are adequate and appropriately allocated to counter the threats organised crime poses.