Laser Phased Array Measurement of Simulated Solidified Weld Penetration Depth

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Title:	Laser Phased Array Measurement of Simulated Solidified Weld Penetration Depth
Authors:	楊智旭;Yang, Jr-Syu;Sanderson, T.;Graham, G.;Ume, C.
Contributors:	淡江大學機械與機電工程學系
Keywords:	Lasers;Ultrasound;Wave amplitude;Optical fiber;Thickness;Base metals;Resolution(Optics)
Date:	1996-05
Issue Date:	2010-03-26 19:50:56 (UTC+8)
Publisher:	American Society of Mechanical Engineers (ASME)
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.
Relation:	Journal of Manufacturing Science and Engineering 118(2), pp.266-271
DOI:	10.1115/1.2831020
Appears in Collections:	[Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering] Journal Article

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