无损检测的几个热点问题和技术

介绍当前无损检测领域几项快速发展的并受人普遍关注的热点问题和技术，如输油、输气管道和地下管网的在线监测、复合材料粘接层的检测、成像技术以及信号处理。介绍其基本原理、技术特点和近期进展。最后指出，当前新材料新领域的质量控制发展对无损检测技术提出了更高的要求和更广阔的应用空间。

Some Hot Problems and Techniques in Present Nondestructive Testing

Some popularly concerned hot problems and fast developed techniques in present nondestructive testing field were introduced, such as on-line monitoring for pipe laying, gas pipeline and embedding pipes, inspection for the adhesive coating of composite material, imaging techniques and signal processing. Their principles, features and recent advances were reviewed. At last, it was pointed out that nondestructive testing should develop more faster and reliable to fit the rapid development of present materials.