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Proceedings Paper

Utilization of ultrasonic guided waves to detect delamination in aviation industries
Author(s): Mohammad Riahi; Hamid R. Behnia
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Paper Abstract

Composite materials in comparison with metals have many advantages such as high strength and corrosion resistance, therefore are strongly used in fields of civil and military applications. However, defects such as delamination, fiber cracking, fiber and matrix separation and the like are more critical than steel structures. As a result, the use of accurate and cost-effective method for monitoring of composite structures is very important. In this regard, using ultrasonic guided wave is growing rapidly in many industries which is because of guided wave's characteristics such as their high sensitivity to defects, ability to propagate in large range as well as some other practical points. In this paper, after introducing ultrasonic guided waves, accessing the features of the signal produced due to the delamination in a fiberglass plate is discussed. Subsequently, utilization of piezoelectric probe of guided wave and its measurement will be elaborated. Last stage of this study will discusses analysis of signals received under assortment of conditions in the measurement process, upon which, a systematic approach in delamination detection will be introduced.

Paper Details

Date Published: 20 April 2011
PDF: 11 pages
Proc. SPIE 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011, 798332 (20 April 2011); doi: 10.1117/12.879312
Show Author Affiliations
Mohammad Riahi, Iran Univ. of Science and Technology (Iran, Islamic Republic of)
Hamid R. Behnia, Iran Univ. of Science and Technology (Iran, Islamic Republic of)


Published in SPIE Proceedings Vol. 7983:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011
H. Felix Wu, Editor(s)

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