NDLI: 3d guided wave motion analysis on laminated composites

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3d guided wave motion analysis on laminated composites

Content Provider	NASA Technical Reports Server (NTRS)
Author	Tian, Zhenhua Yu, Lingyu Leckey, Cara
Copyright Year	2013
Description	Ultrasonic guided waves have proved useful for structural health monitoring (SHM) and nondestructive evaluation (NDE) due to their ability to propagate long distances with less energy loss compared to bulk waves and due to their sensitivity to small defects in the structure. Analysis of actively transmitted ultrasonic signals has long been used to detect and assess damage. However, there remain many challenging tasks for guided wave based SHM due to the complexity involved with propagating guided waves, especially in the case of composite materials. The multimodal nature of the ultrasonic guided waves complicates the related damage analysis. This paper presents results from parallel 3D elastodynamic finite integration technique (EFIT) simulations used to acquire 3D wave motion in the subject laminated carbon fiber reinforced polymer composites. The acquired 3D wave motion is then analyzed by frequency-wavenumber analysis to study the wave propagation and interaction in the composite laminate. The frequency-wavenumber analysis enables the study of individual modes and visualization of mode conversion. Delamination damage has been incorporated into the EFIT model to generate "damaged" data. The potential for damage detection in laminated composites is discussed in the end.
File Size	1317065
Page Count	8
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20140002793
Archival Resource Key	ark:/13960/t3033v60t
Language	English
Publisher Date	2013-07-21
Access Restriction	Open
Subject Keyword	Composite Materials Nondestructive Tests Damage Assessment Wave Propagation Simulation Energy Dissipation Delaminating Frequencies Ultrasonic Radiation Laminates Elastodynamics Detection Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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