Abstract
Recently, Ingalls Shipbuilding Division of Litton updated its fillet weld design practices for naval ship construction. This task was part of a continuing effort to improve accuracy control by decreasing weld-caused distortion. Recent material properties and a more rigorous engineering analysis were used to reduce the required fillet sizes by about 25 percent for steel and about 50 percent for aluminum. The analysis method was developed for the Navy at Newport News Shipbuilding during the 1970's. Intermittent weld tables were developed and, where utilized, proved to be a very cost-effective distortion control measure. Reducing the amount of weld reduces distortion and economically improves accuracy control. Fabrications costs were significantly reduced. This paper reviews the methods and properties used to develop and implement the new weld tables. The benefits to distortion control and construction costs are also discussed.
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