Research Article

Research on Pipeline Damage Imaging Technology Based on Ultrasonic Guided Waves

Figure 13

Time domain diagram of guided waves with different defect sizes. (a) Circumferential angle is 15°. (b) Circumferential angle is 30°. (c) Circumferential angle is 45°. (d) Circumferential angle is 60°. (e) Circumferential angle is 75°. (f) Circumferential angle is 90°.
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