Nonlinear Ultrasonic Mixing Method for Structural Fatigue Crack Direction Detection
A nonlinear ultrasonic and fatigue cracking technology, used in the analysis of solids using sonic/ultrasonic/infrasonic waves, material analysis using sonic/ultrasonic/infrasonic waves, measuring devices, etc.
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[0063]Combine belowFigure 1~Figure 10 Taking the finite element simulation of shear wave mixing and A0 wave mixing detection as an example, the implementation process of nonlinear ultrasonic mixing method for structural fatigue crack direction detection is explained in detail.
[0064]Using Abaqus commercial finite element analysis software, a two-dimensional finite element model of shear wave mixing and a three-dimensional finite element model of A0 wave mixing with fatigue cracks in two arbitrary directions were established respectively, and numerical simulation of shear wave mixing detection and A0 wave mixing detection were performed. The fatigue crack length in the transverse wave mixing simulation model is 15mm and the directions are 23° and 52°; the fatigue crack length in the A0 wave mixing simulation model is 30mm and the directions are 13° and 35°.
[0065](1) Detection of fatigue crack direction of block structure
[0066]The specific implementation steps of the transverse wave mi...
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