Method for positioning defects of T-type stringer on basis of ultrasonic guided waves
A technology of ultrasonic guided wave and positioning method, which is applied to the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, material analysis using sound waves/ultrasonic waves/infrasonic waves, and measuring devices, which can solve the problems of increased detection difficulty, long detection time, and cost Advanced problems, to achieve the effect of longitudinal defect positioning, accurate longitudinal defect positioning, and horizontal defect position discrimination
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[0024] In order to make the technical solutions and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the drawings in the embodiments of the present invention:
[0025] Such as figure 1 The shown T-shaped stringer defect location method based on ultrasonic guided waves specifically includes the following steps:
[0026] S1: According to the T-shaped stringer cross-sectional size, material density, elastic modulus, and Poisson's ratio information, the guided wave characteristics propagating on the T-shaped stringer are obtained through theoretical analysis by the semi-analytical finite element method. The guided wave characteristics include dispersion curve and wave structures;
[0027] S2: Select each frequency and mode for detection through the dispersion curve and wave structure, and according to the different sensitive modes corresponding to diff...
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