超声导波技术在管道缺陷检测及评价中的应用  

Application of Guided Ultrasonic Waves Technique on Defect Detection for Pipelines

作　　者：孙立瑛[1] 李一博[2] 

机构地区：[1]天津城市建设学院能源与机械工程系,天津300384 [2]天津大学精密测试技术及仪器国家重点实验室,天津300072

出　　处：《天津城市建设学院学报》2011年第3期216-220,共5页Journal of Tianjin Institute of Urban Construction

基　　金：国家自然科学基金青年基金(50804034);天津市自然科学基金(09JCYBJC02200);天津大学精密测试技术及仪器国家重点实验室开放基金资助项目(Pil0907)

摘　　要：超声导波技术是一种新兴的无损检测技术,由于其检测距离长、速度快、成本低、且可以对常规管道检测方法无法接近的管道进行检测及评价,多用于对带夹具、有套管或埋地管道的检测.笔者对管道超声导波的检测原理,以及超声导波在管道中的传播和衰减特性进行了研究,分析了影响管道超声导波检测准确性的主要因素,并采用纵向和扭转模态导波对一段24,,m长、存在复杂管道特征及人为加工缺陷的管道进行了实验.Guided ultrasonic wave is a new non-destructive test technology and it can be used to test and evaluate inaccessible pipes for other traditional non-destructive test methods because of its longer inspection distance, rapid inspection and low cost. Thus, it is widely used for the detection for the underground pipes, and the pipes with fixtures and sleeves. This paper introduces the inspection principle of guided ultrasonic wave, and investigates its propagation and attenuation characteristics, and analyzes the factors which may affect inspection correction when using guided ultrasonic wave for pipe inspection, and uses the guided ultrasonic waves of longitudinal and torsional modes to test a 24 meters long steel pipe with complex features and several artificial defects.

关 键 词：管道 检测 超声导波 

分 类 号：TE973.6[石油与天然气工程—石油机械设备]