车轴横波聚焦探头的研制

基金项目:

铁道部科技研究开发计划项目（2001J018）

详细信息

Study on Transverse Wave Testing of Rail Axle with Focusing Probe

摘要: 利用几何声学原理，研究了在火车车轴圆周面上扫查时声波的传播规律，分析了声波的发散特性和聚焦条件，设计了5晶片聚焦探头，进行了探头性能测试和探伤试验。测试结果表明，5晶片聚焦探头聚焦效果明显，在探测深度为160 mm时，其声场强度较等面积单晶片探头提高了5 dB以上。
- 超声波探伤 /
- 火车车轴 /
- 横波探伤 /
- 聚焦探头研制
Abstract: The law of ultrasonic wave propagation was studied according to geometrical acoustics principle while scanning on rail axle convex surface. The divergence characteristics and focusing condition of ultrasonic wave in rail axle were analyzed. Five-crystal focusing probe was designed and the probe performances were experimented. Results indicated that the focusing effect of five-crystal probe was obvious and the wave amplitude was 5 dB more than the single-crystal probe with the same size at a testing depth of 160 mm.
- Ultrasonic testing /
- Rail axle /
- Transverse wave testing /
- Study of focusing probe

[1]	黎连修.车轴纵向横波探伤研究[C].苏州：第八届全国无损检测大会暨国际无损检测技术研讨会,2003.