物理学报Issue(9)：275-280,6.DOI:10.7498/aps.62.094301
固体粗糙界面与超声的非线性相互作用研究*
Nonlinear interaction between ultrasound and solid rough interface∗
摘要
Abstract
The interaction of ultrasound with an interface between two rough surfaces in contact has become a quite popular topic in many areas related to non-destructive evaluation (NDE). We proposed a theory of ultrasonic nonlinear interaction between some random rough elastic interfaces. The model of random elastic-contact interface is first described, and then the nonlinear ultrasonic interaction of interfaces with stress-strain relationship is studied, by using different models including linear simplified model, exponential model, and Gaussian model. Results of numerical simulations and experiments demonstrate that the Gaussian model is more suitable for describing the solid rough interfaces. This study provides an explanation of the ultrasonic interaction on mesoscopic level, which is a theoretical basis for practical application to detect cracks, defects and injuries in industrial ultrasonic NDE.关键词
超声无损检测/固体粗糙界面/非线性效应Key words
ultrasonic non-destructive evaluation/solid rough interface/nonlinear effect引用本文复制引用
肖齐,王珺,郭霞生,章东..固体粗糙界面与超声的非线性相互作用研究*[J].物理学报,2013,(9):275-280,6.基金项目
国家重大基础研究项目(批准号:6131222)和国家自然科学基金(批准号:11104029,11104141)资助的课题.*Project supported by the National Key Basic Research Program of China (Grant No.6131222), and the National Natural Science Foundation of China (Grant Nos.11104029,11104141) （批准号:6131222）
