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CALIBRATION DEVICE FOR NONDESTRUCTIVE INSPECTION MEASUREMENT SYSTEM, AND NONDESTRUCTIVE INSPECTION MEASUREMENT METHOD
CALIBRATION DEVICE FOR NONDESTRUCTIVE INSPECTION MEASUREMENT SYSTEM, AND NONDESTRUCTIVE INSPECTION MEASUREMENT METHOD
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机译：无损检测系统的校准装置及无损检测方法
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摘要
PROBLEM TO BE SOLVED: To improve measurement accuracy regardless of various condition changes of a subject.SOLUTION: A calibration device for a nondestructive inspection measurement system comprises: excitation coils 122; detection coils 112; and a computer 301 for applying, to the excitation coils 122, sinusoidal signals, or composite signals composed of a plurality of sinusoidal waves with different frequencies from one another, so as to excite a pipe body 2a, and for detecting changes in voltage outputted from the detection coils 112. A calibration device 5 calibrates detection results by the computer 301 by substituting, into simultaneous equations as variables, amplitudes and phase differences of changes in voltage outputted from the detection coils 112 at a plurality of calibration points of the pipe body 2a with known thicknesses. The calibration device 5 changes calibration conditions at each of the calibration points in a plurality of ways, and performs calibration by substituting, into simultaneous equations, amplitudes and phase differences of changes in voltage outputted from the detection coils 112 under respective calibration conditions.SELECTED DRAWING: Figure 1
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