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METHOD AND PROGRAM FOR IDENTIFYING SURFACE SHAPE OF ULTRASONIC WAVE FLAW DETECTION TEST PIECE, APERTURE SYNTHESIS PROCESSING PROGRAM, AND PHASED ARRAY FLAW DETECTION PROGRAM
METHOD AND PROGRAM FOR IDENTIFYING SURFACE SHAPE OF ULTRASONIC WAVE FLAW DETECTION TEST PIECE, APERTURE SYNTHESIS PROCESSING PROGRAM, AND PHASED ARRAY FLAW DETECTION PROGRAM
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机译：识别超声波缺陷检测零件，孔径合成处理程序和相控阵缺陷检测程序的表面形状的方法和程序
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摘要
PROBLEM TO BE SOLVED: To grasp the shape of a surface of a test piece by using a reflection wave from the surface when an ultrasonic wave is made incident to the test piece.;SOLUTION: A phased array is arranged on the surface of the test piece along the surface shape of a test piece having a shape change part whose surface shape has changed, with a medium whose configurations may change intervening in between; an ultrasonic wave is projected to the test piece for each oscillator of the phased array to receive a surface echo; a reflection wave from the surface of the test piece obtained for each oscillator is detected to acquire a beam path from each oscillator to the surface of the test piece and to assume a circle having each oscillator as the center and the beam path acquired for each oscillator as the radius; a common circumscribing line of the circles having the adjacent oscillators as the respective centers is acquired; points on the common circumscribing line are two-dimensionally interpolated and identified as a test piece surface in a section where the common circumscribing line is acquired; a gap between the oscillators is determined to be a boundary of shape change in a section where a common circumscribing line cannot be acquired, and the points on the common circumscribing lines obtained in the respective sections are two-dimensionally interpolated; and the two-dimensionally interpolated point is extrapolated to identify as a surface shape of the boundary and acquire a test piece surface shape.;COPYRIGHT: (C)2012,JPO&INPIT
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