Campus Units

Aerospace Engineering, Center for Nondestructive Evaluation (CNDE)

Document Type

Article

Publication Version

Published Version

Publication Date

2014

Journal or Book Title

The Journal of the Acoustical Society of America

Volume

135

Issue

5

First Page

2646

Last Page

2653

DOI

10.1121/1.4869684

Abstract

In the present work, the interaction of Rayleigh waves with a delamination in a fiber reinforced composite plate was analyzed. Rayleigh waves, upon interactingwith delamination mode, convert into Lamb waves in the delamination zone. These guided Lamb modes have the capability to mode convert back into Rayleigh modes when they interact with the edge of the delamination. A unidirectional glass/epoxy laminate with a delamination of known size was fabricated and tested using air-coupled ultrasonics. Finite element models were developed to understand the mode conversions occurring at various sections of the delamination. Particle displacements along with numerical and experimental velocities were considered to identify each mode. Conclusions were drawn based on the velocity analysis.

Comments

This article is published as Chakrapani, Sunil Kishore, and Vinay Dayal. "The interaction of Rayleigh waves with delaminations in composite laminates." The Journal of the Acoustical Society of America 135, no. 5 (2014): 2646-2653. DOI: 10.1121/1.4869684. Posted with permission.

Copyright Owner

Acoustical Society of America

Language

en

File Format

application/pdf

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