KAIST Logo 이미지 Science Logo 이미지
top 이미지 KOASAS top 이미지
top 이미지
top 이미지 top 이미지 top 이미지 top 이미지
top 이미지

Simple item record

Please use this identifier to cite or link to this item: http://hdl.handle.net/10203/19251

Hit : 298   Download : 2,060

Metadata Downloads : or


Interaction of Lamb Waves with Structural Features of an Aircraft Fuselage


Olson, S.E.[Olson, Steven E.]DeSimio, M.P.[DeSimio, Martin P.]Swenson, E.D.[Swenson, Eric D.]Sohn, H[Sohn, Hoon] icon

Issue Date 



the 5th European Workshop on Structural Health Monitoring, v., no., pp.-


The use of Lamb waves to detect cracks in metallic structures has been widely studied and basic crack detection techniques have been demonstrated for test articles with simple geometries, such as in flat plates and beams. However, interpretation of measured waveforms becomes much more difficult in test articles with complex geometries. This paper presents results from experimental testing and finite element simulations of elastic wave propagation through a section of an aluminum aircraft fuselage. The fuselage geometry is considerably more complex than a simple plate and includes structural features such as rivets, doublers, stiffeners, and ribs. Each of these structural features can affect wave propagation, such as via mode conversion or frequency shifting. To better understand the effects of structural features on elastic wave propagation, a 3D laser Doppler vibrometer has been used to measure both in-plane and out-of-plane velocity components of the propagating waves at a large number of closely-spaced grid points over the surface of the fuselage. Images created from the vibrometer measurements show the interactions of the waves with structural features. Finite element simulations of the elastic wave propagation have been performed and compared with vibrometer results to validate the analytical models. These validated models can then be used for additional studies or design purposes.



Appears in Collections

CE-Conference Papers(학술회의논문)

Files in This Item: Description SizeFormat
the 5th European Workshop
on Structural Health Mon
of lamb waves with struct
ural features of an aircraft fuselage.pdf
 301KbAdobe PDFView/Open
SFX Query

Items in KOASAS are protected by copyright, with all rights reserved, unless otherwise indicated.

bottom 이미지 KOASAS Logo 이미지
DSpace Software Copyright(c) 2008 MIT and Hewlett-Packard   KOASAS TEL. 82-42-350-4494 E-mail. koasas@kaist.ac.kr