《材料无损检测》课程教学大纲.doc

PAGE PAGE 4 材料无损检测 一、课程介绍 《材料无损检测》课程是针对材料科学与工程/材料成型及控制工程专业本科生开设的核心课程。主要内容包括：材料成型工艺缺陷、射线探伤、超声波探伤、其他探伤方法等四个部分。材料成型工艺缺陷部分分别以型材、铸件、锻件、焊接件生产中的各种工艺缺陷为例，重点讲述工艺缺陷的概念、原因和形貌特征，并结合理论和实践分析工艺缺陷在不同检测方法中的显示形态及其被漏检的可能性；射线探伤(RT)部分重点讲述射线的性质和射线探伤的基本原理，依据相关标准并结合实验介绍射线探伤工艺，详细分析型材、铸件、锻件、焊接件中各种工艺缺陷在射线探伤中的形貌特征，概述x射线探伤机的使用及安全防护方法；超声波探伤(UT)部分主要讲述超声波的性质与超声波探伤的基本原理，从理论和实践的结合上阐述超声波探伤系统的性能、使用及维护方法，详细分析第一临界角、第二临界角和第三临界角的意义，直/斜探头的应用条件及缺陷定位的基本方法，以及不同探头折射角使片状缺陷被漏检的可能性；其他探伤方法部分主要讲述渗透检测（PT）、磁力检测(MT)、红外探伤和声发射探伤的基本原理、探伤技术的要点、应用条件和基本操作程序。 通过学习本课程教学使学生初步掌握材料无损检测的基本知识、操作技能与技术要点；能够正确选择无损检测方法、相关仪器、设备，并能正确选定各种技术参数；初步了解缺陷识别、产品质量等级评定及相关标准；为今后从事材料或产品的无损检测工作、制定相应的无损检测工艺奠定理论和实践基础。 Introduction “Non-destructive Testing for Materials” is a basic course for undergraduate on materials science and engineering/material forming and control engineering. It mainly includes four parts: materials forming process defects、radiographic testing、ultrasonic testing、surface inspection. The part of materials forming process defects respectively taking the process defects of profile、casting、forging and welding assembly in production for examples, focuses on the concept、reasons and topography characteristics of process defects, analyses the morphology in different test methods and the possibility being missed combining with the theory and practice. The part of radiographic testing (RT) focuses on the nature of the ray and the basic principle of radiographic testing, introduces radiographic testing technique according to relative standards and combining with experiments, analyses the morphology of defects in profile、casting、forging and welding assembly in detail, summarizes the usage and safety protection methods of x-ray detection apparatus. The part of ultrasonic testing focuses on the nature of the ultrasonic and the basic principle of ultrasonic testing, states the property、usage and maintenance method for ultrasonic testing system combining with the theory and practice, analyses the meaning of first critical angle、second crit