WU Bin, LI Long-tao, WANG Xiu-yan, YU Hai-qun, LI Yong, HE Cun-fu. NON-DESTRUCTIVE TEST OF A SURFACE DEFECT ON A STEEL BAR BASED ON ULTRASONIC GUIDED WAVE TECHNIQUES[J]. Engineering Mechanics, 2003, 20(5): 149-154.
Citation: WU Bin, LI Long-tao, WANG Xiu-yan, YU Hai-qun, LI Yong, HE Cun-fu. NON-DESTRUCTIVE TEST OF A SURFACE DEFECT ON A STEEL BAR BASED ON ULTRASONIC GUIDED WAVE TECHNIQUES[J]. Engineering Mechanics, 2003, 20(5): 149-154.
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NON-DESTRUCTIVE TEST OF A SURFACE DEFECT ON A STEEL BAR BASED ON ULTRASONIC GUIDED WAVE TECHNIQUES

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  • The multi-modes and disperse characteristics of guided waves in steel bar are investigated theoretically and experimentally. With experiments, the phenomena of "L-Wave Precursor" is verified and analyzed. Meanwhile, an artificial surface defect of a 2320mm steel bar is detected. Results show that it is feasible for detecting the defects on a steel bar surface using L(0,1) mode of ultrasonic guided waves for a given special frequency.
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