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Journal of Applied Sciences >

2013 , Vol. 31 >Issue 3: 266 - 270

DOI: https://doi.org/10.3969/j.issn.0255-8297.2013.03.008

Signal and Information Processing

Classification of Layered Structures Using Phase Information of Reflected Sound

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  • 1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China
    2. Key Laboratory for Underwater Test and Control Technology, Dalian 116013, Liaoning Province, China
    3. Shanghai Acoustics Laboratory, Chinese Academy of Sciences, Shanghai 200032, China

Received date: 2012-11-21

  Revised date: 2013-03-12

  Online published: 2013-03-12

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Abstract

This paper presents a method for classification of layered materials with unknown physical properties based on the phase-frequency characteristics of acoustic reflection coefficients. Layered structures under consideration include a single layer material, double-layered plates with harder and softer materials on the two sides respectively, and a sandwich structure with a harder material as the outer layers and a softer material in the middle. A set of criteria for differentiating the types of structure is given. Numerical simulation shows effectiveness of the method with a high rate of correct classification.

Key words： acoustic reflection; layered materials; phase features; classification

Cite this article

WANG Lu-xian1, WANG Shuo-zhong1, CHEN Yun-fei2, WANG Run-tian3, ZOU Ting-ting1 . Classification of Layered Structures Using Phase Information of Reflected Sound[J]. Journal of Applied Sciences, 2013 , 31(3) : 266 -270 . DOI: 10.3969/j.issn.0255-8297.2013.03.008

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