Interaction of guided waves with delaminations in composite plate structures

This paper addresses a gap in the literature on the 3-dimensional scattering of the fundamental symmetric Lamb mode S0 from delimitations in composite plates. We study the scattering of low-frequency S0 Lamb mode from a delamination in a stiffened 4-ply CFRP composite plate with [0/0]S ply orientati...

Full description

Saved in:
Bibliographic Details
Main Authors: Gupta, Saurabh, Yu, Xudong, Fan, Zheng, Rajagopal, Prabhu
Other Authors: School of Mechanical and Aerospace Engineering
Format: Conference or Workshop Item
Language:English
Published: 2017
Subjects:
Online Access:https://hdl.handle.net/10356/83628
http://hdl.handle.net/10220/42684
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-83628
record_format dspace
spelling sg-ntu-dr.10356-836282023-03-04T17:07:47Z Interaction of guided waves with delaminations in composite plate structures Gupta, Saurabh Yu, Xudong Fan, Zheng Rajagopal, Prabhu School of Mechanical and Aerospace Engineering AIP Conference Proceedings Laminates Surface acoustic waves This paper addresses a gap in the literature on the 3-dimensional scattering of the fundamental symmetric Lamb mode S0 from delimitations in composite plates. We study the scattering of low-frequency S0 Lamb mode from a delamination in a stiffened 4-ply CFRP composite plate with [0/0]S ply orientation. Far field scattering coefficients for the S0 Lamb mode are plotted as a function of circumferential position around the delamination using 3D FE simulations. Results show that the delamination size has less influence on S0 Lamb wave scattering in the low-frequency regime where the S0 mode is non-dispersive. Further analysis was done using two-dimensional FE simulation for different ply-layup orientations with S0 Lamb mode. This study shows that ply-layup orientation and through-thickness delamination location in fiber composite laminate have a significant influence on S0 Lamb mode interaction. We also analyzed the interaction of A0 Lamb mode for a few cases. This work will be useful for practical Lamb wave based inspection of composite plate structures. Published version 2017-06-13T08:10:30Z 2019-12-06T15:27:04Z 2017-06-13T08:10:30Z 2019-12-06T15:27:04Z 2017 Conference Paper Gupta, S., Yu, X., Fan, Z., & Rajagopal, P. (2017). Interaction of guided waves with delaminations in composite plate structures. AIP Conference Proceedings, 1806(1), 030011-. https://hdl.handle.net/10356/83628 http://hdl.handle.net/10220/42684 10.1063/1.4974579 en © 2017 American Institute of Physics (AIP). This paper was published in AIP Conference Proceedings and is made available as an electronic reprint (preprint) with permission of American Institute of Physics (AIP). The published version is available at: [http://dx.doi.org/10.1063/1.4974579]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 8 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Laminates
Surface acoustic waves
spellingShingle Laminates
Surface acoustic waves
Gupta, Saurabh
Yu, Xudong
Fan, Zheng
Rajagopal, Prabhu
Interaction of guided waves with delaminations in composite plate structures
description This paper addresses a gap in the literature on the 3-dimensional scattering of the fundamental symmetric Lamb mode S0 from delimitations in composite plates. We study the scattering of low-frequency S0 Lamb mode from a delamination in a stiffened 4-ply CFRP composite plate with [0/0]S ply orientation. Far field scattering coefficients for the S0 Lamb mode are plotted as a function of circumferential position around the delamination using 3D FE simulations. Results show that the delamination size has less influence on S0 Lamb wave scattering in the low-frequency regime where the S0 mode is non-dispersive. Further analysis was done using two-dimensional FE simulation for different ply-layup orientations with S0 Lamb mode. This study shows that ply-layup orientation and through-thickness delamination location in fiber composite laminate have a significant influence on S0 Lamb mode interaction. We also analyzed the interaction of A0 Lamb mode for a few cases. This work will be useful for practical Lamb wave based inspection of composite plate structures.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Gupta, Saurabh
Yu, Xudong
Fan, Zheng
Rajagopal, Prabhu
format Conference or Workshop Item
author Gupta, Saurabh
Yu, Xudong
Fan, Zheng
Rajagopal, Prabhu
author_sort Gupta, Saurabh
title Interaction of guided waves with delaminations in composite plate structures
title_short Interaction of guided waves with delaminations in composite plate structures
title_full Interaction of guided waves with delaminations in composite plate structures
title_fullStr Interaction of guided waves with delaminations in composite plate structures
title_full_unstemmed Interaction of guided waves with delaminations in composite plate structures
title_sort interaction of guided waves with delaminations in composite plate structures
publishDate 2017
url https://hdl.handle.net/10356/83628
http://hdl.handle.net/10220/42684
_version_ 1759856432519315456