铜管超声导波检测试验

详细信息

Investigation on Ultrasonic Testing of Copper Alloy Tubes by Guided Waves

摘要: 根据铜管中轴对称纵向模式导波的频散曲线及L(0,2)模式导波的位移分布曲线，选择频率0.49 MHz的L(0,2)模式导波，对带有不同缺陷的铜管进行检测试验。结果表明，L(0,2)模式导波对铜管中各种缺陷均有良好检出能力，缺陷的反射波幅主要取决于缺陷径向和周向尺寸，而缺陷的轴向尺寸对反射波幅基本没有影响。
- 超声检测 /
- 导波 /
- 铜管 /
- 缺陷
Abstract: Based on the dispersion and displacement characteristics of longitudinal axially symmetric mode guided waves in copper alloy tubes, the L(0,2) mode at 0.49 MHz was employed. Tests of copper alloy tubes with various defects were carried out. It was showed that the L(0,2) mode had good ability to detect various defects in copper alloy tubes. The echo amplitude from defects depended mainly on the radial and circumferential dimentions, and the longitudinal length of defects had little effect on the amplitude.
- Ultrasonic testing /
- Guided waves /
- Copper alloy tubes /
- Defect

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