Ultrasonic Welding Of Aluminum

Ultrasonic Welding of Metal Sheets covers various aspects of ultrasonic welding (USW) of metal sheets, including the discussion on modeling and numerical simulations of ultrasonic welding to improve this welding process and performance. This book aims to provide an accessible, comprehensive and up-to-date exposition of the various aspects of joining of dissimilar metal sheets ranging from its fundamentals thorough to metallurgical characteristics covering fundamental concepts, in-detailed explanation about the USW including its implementation, design criteria, work material, welding, thermo-mechanical and research scopes. The book is aimed at researchers, professionals and graduate students in manufacturing, welding, mechanical engineering. Features The ultrasonic spot welding of various metal sheets is described in simplified expression and concepts are elucidated by relevant illustrations. Discusses modeling and numerical simulations of ultrasonic welding to improve the ultrasonic welding process and performance As opposed to competition in the market, this title provides thorough clarification of ultrasonic spot welding of metal sheets with its applications.

Abstract: The main objective in this experimental investi¬gation is to test the validity of various proposed bonding mechanisms in ultrasonic welding. The bonding interfaces of ultrasonic aluminum welds were examined by means of cross section metallography, microhardness tests and SEM observations. Adhesion produced by local plastic deformation was found to be the most plausible mechanism. Based on the appearance of fracture surfaces of peeled welds, a relationship between surface contact asperities and bonding formation is suggested. The ef¬fects of weld time and clamping force on the weld strength were also examined. Weld strength was found to be an asymptotic increasing function of weld time and an optimal clamping force was obtained.

Ultrasonic Welding of Metal Sheets covers various aspects of ultrasonic welding (USW) of metal sheets, including the discussion on modeling and numerical simulations of ultrasonic welding to improve this welding process and performance. This book aims to provide an accessible, comprehensive and up-to-date exposition of the various aspects of joining of dissimilar metal sheets ranging from its fundamentals thorough to metallurgical characteristics covering fundamental concepts, in-detailed explanation about the USW including its implementation, design criteria, work material, welding, thermo-mechanical and research scopes. The book is aimed at researchers, professionals and graduate students in manufacturing, welding, mechanical engineering. Features The ultrasonic spot welding of various metal sheets is described in simplified expression and concepts are elucidated by relevant illustrations. Discusses modeling and numerical simulations of ultrasonic welding to improve the ultrasonic welding process and performance As opposed to competition in the market, this title provides thorough clarification of ultrasonic spot welding of metal sheets with its applications.

The purpose of this report is to summarize the present state of aluminum-welding technology. The major topics covered are: Basic metallurgy of various heat-treatable and non-heat-treatable alloy classes; welding processes used for joining aluminum with emphasis on newer processes and procedures which are considered important in defense metals industries; welding characteristics of various alloys; comparison of tensile properties, cracking tendencies, notch toughness, and stress-corrosion characteristics of various weldments; dissimilar metal welds; and causes of porosity and cracking of aluminum welds and the effect of porosity on weld strength. (Author).