爬波是一种在材料的表面下传播的压缩波，对表面和近表面缺陷非常敏感。
Creeping wave is a type of compressional wave, which propagates below the surface and is sensitive to surface and near-surface defects.
研究了红外热成象技术用于近表面缺陷的探测，给出了对两种薄壁材料中缺陷的探测结果。
The thermographic method as a nondestructive testing for the detection of subsurface defects is investigated. Results are given for the evaluation of defects in a series of thin-walled materials.
该装置采用全油浸耦合，用聚束探头检测近表面缺陷，用表面波检测表面裂纹，用计算机化c扫描定量缺陷尺寸。
By oil immersion coupling. the system can be used to detect near surface defects with focussing probe. find surface cracks with surface wave probe and determine defect size with computerized C-scan.
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