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RESEARCH PAPERS

Laser Phased Array Measurement of Simulated Solidified Weld Penetration Depth

[+] Author and Article Information
J. Yang

Department of Mechanical Engineering, Tamkang University, Taipei, Taiwan

T. Sanderson, G. Graham, C. Ume

School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA

J. Manuf. Sci. Eng 118(2), 266-271 (May 01, 1996) (6 pages) doi:10.1115/1.2831020 History: Received October 01, 1993; Revised December 01, 1994; Online January 17, 2008

Abstract

This paper presents an experimental investigation of the use of an optical fiber laser phased array to measure solidified weld pool penetration depth in butt and v-groove joints. The purpose was to determine the optimum distances between the ultrasound source (the array), receiver, and the weld joint, in order to measure weld penetration depth. The relationship between penetration depth and wave amplitude was approximately linear. A narrow range of distances between the ultrasound receiver and weld joint permitted the ultrasonic system to detect penetration depth over the entire thickness of the base metal. Maximum resolution in measuring penetration depth was achieved by keeping the distance between the array and the weld joint as small as possible.

Copyright © 1996 by The American Society of Mechanical Engineers
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