本项目旨在研究磁－力－热多场作用下磁致伸缩超声导波对高温金属管道缺陷进行实时定量化检测的理论和方法。主要研究内容包括：（1）建立基于导波检测的磁－力－热多场耦合行为的本构模型；（2）建立在磁－力－热多场耦合作用下，高温金属管道缺陷的磁致伸缩超声导波特征模型的理论 ；（3）研究具有对高温金属管道缺陷实时检测和定量表征的磁致伸缩导波无损检测系统集成技术。.本项目的成功实施必将为高温金属管道缺陷监测奠定重要的理论基础，同时也为该领域提供一种具有自主知识产权和关键的共性技术手段。研究成果将改变长期以来在役高温金属管道缺陷状态不能在线实时便捷监测的局面，相关理论和共性技术进的一步推广,可方便延伸到储罐、长输管线、铁路轨道、海洋平台等结构健康检测领域，创造更大的经济和社会效益。

The Project is to study the quantitative detection theory and methods of the defects in high-temperature metal pipeline, which is under the action of magnet field, force field and thermal field, based on magnetostrictive ultrasonic guided wave technique .The main content is as follows：.(1) Establish the constitutive model of multi-fields (magnet, force and thermal) coupling action using ultrasonic guided wave testing technique..(2) Study the defect characters in high-temperature metal pipeline using ultrasonic guided wave testing technique, which is under the action of multi-fields..(3) Study the integration technology of magnetostrictive guided wave NDT system, which can real-time and quantitative detect the defects in high-temperature metal pipeline..The implementation of the project will lay the theoretical basis for the high-temperature metal pipeline defects monitoring, and provide a key common technology with independent intellectual property rights. The research results will change the situation that the defects in high-temperature pipeline can not be real-time, online and convenient detect. The relevant theory and common technologies can be easily applied to the field of structural health monitoring of tanks, pipelines, rails and offshore platforms to create greater economic and social benefits.