This paper investigates the application of highly nonlinear solitary waves as a nondestructive evaluation method to detect localized corrosion in metallic structures. An experiment was conducted by using chains of monoperiodic particles in contact with a steel plate subjected to localized accelerated corrosion. A few damage-sensitive features were extracted from the time waveforms and fed into a multivariate statistical analysis to enhance the sensitivity of the proposed non-invasive monitoring approach. The experiment was complemented by a finite element model to quantify the effects of localized corrosion on certain features of the solitary waves propagating along the chain. Both the numerical and the experimental results show that the solitary waves reflected at the chain-plate interface are affected by the presence and progression of corrosion. Furthermore, the multivariate statistical analysis improved the sensitivity of the proposed approach. In the future, the proposed me...

中文翻译：

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高度非线性的孤立波，用于检测局部腐蚀

本文研究了将高度非线性的孤立波作为一种无损评估方法来检测金属结构中局部腐蚀的方法。通过使用单周期颗粒链与经受局部加速腐蚀的钢板接触进行实验。从时间波形中提取了一些对损伤敏感的特征，并将其输入多变量统计分析中，以增强所提出的非侵入性监测方法的敏感性。通过有限元模型对实验进行补充，以量化局部腐蚀对沿链传播的孤波某些特征的影响。数值和实验结果均表明，在链板界面处反射的孤立波受腐蚀的存在和发展的影响。此外，多元统计分析提高了所提出方法的敏感性。将来，我建议...