| 管道中激励和接收扭转模态导波专用探头的研制与应用 |
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| 引用本文： | 何存富,杨士明,吴斌,刘增华. 管道中激励和接收扭转模态导波专用探头的研制与应用[J]. 无损检测, 2005, 27(12): 621-623,664 |
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| 作者姓名： | 何存富 杨士明 吴斌 刘增华 |
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| 作者单位： | 北京工业大学,机电学院,北京,100022 |
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| 基金项目： | 国家自然科学基金项目（10272007,10372009,60404017）;北京市自然科学基金项目（4052008） |
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| 摘 要： | 超声导波检测技术是一种新兴的无损检测方法。扭转模态是管道中超声导波的模态之一,可以检测各类缺陷。采用厚度切变型压电陶瓷作为敏感元件的探头,其外形尺寸为20 mm×10 mm×20 mm,在4 m长的钢管中进行了扭转模态的激励与接收试验。结果表明,该探头能够有效地激励和接收扭转模态,抑制了其它模态导波的干扰。
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| 关 键 词： | 超声检测 导波 扭转模态 探头 管适 |
| 文章编号： | 1000-6656（2005）12-0621-03 |
| 收稿时间： | 2005-06-02 |
| 修稿时间： | 2005-06-02 |
Development and Application of the Special Transducers for Exciting and Receiving Torsional Mode Guided Waves in Pipes |
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| HE Cun-fu,YANG Shi-ming,WU Bin,LIU Zeng-hua. Development and Application of the Special Transducers for Exciting and Receiving Torsional Mode Guided Waves in Pipes[J]. Nondestructive Testing, 2005, 27(12): 621-623,664 |
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| Authors: | HE Cun-fu YANG Shi-ming WU Bin LIU Zeng-hua |
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| Abstract: | Ultrasonic guided wave inspection is an advanced nondestructive testing method.Torsional mode is one of the types of ultrasonic guided waves in pipes and it can be used to detect different kinds of defects.New special transducers were developed for exciting and receiving torsional mode guided waves in pipes,in which thickness shear mode piezoelectric ceramics was used as sensing element.The transducers were typically 20mm long,10mm wide and 20mm high.Experiment was carried out on a 4m long steel pipe with the transducers developed to excite and receive torsional mode guided waves.Result showed that the transducers could effectively excite and receive torsional mode guided waves and eliminate the interference of other modes. |
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| Keywords: | Ultrasonic testing Guided wave Torsional mode Transducer Pipe |
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