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Coupling of Highly Nonlinear Waves with Linear Elastic Media

Khatri, Devvrath and Daraio, Chiara and Rizzo, Piervincenzo (2009) Coupling of Highly Nonlinear Waves with Linear Elastic Media. In: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems. Proceedings of SPIE. No.7292. Society of Photo-optical Instrumentation Engineers , Bellingham, WA, Art. No. 72920P. ISBN 9780819475527.

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This paper reports a fundamental study of the coupling between highly nonlinear waves, generated in a one dimensional granular chain of particles, with linear elastic media, for the development of a new Non Destructive Evaluation and Structural Health Monitoring (NDE/SHM) paradigm. We design and use novel acoustic actuators to excite compact highly nonlinear solitary waves in a one-dimensional linear elastic rod and investigate the pulse propagation across the interface. To model the actuator and rod system we use Finite Element Analysis (Abaqus) and obtain excellent agreement between the experimental observations and the numerical results. We also study the response of the system to the presence of defects (cracks) in the steel rod, by comparing the wave propagation properties in pristine and cracked test objects. The obtained results encourage the use of highly nonlinear waves as an effective tool for developing a new, viable NDE/SHM method.

Item Type:Book Section
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Daraio, Chiara0000-0001-5296-4440
Additional Information:© 2009 SPIE. Chiara Daraio and Piervincenzo Rizzo acknowledge the support of NSF Funding (Grant Number CMMI-0825345).
Funding AgencyGrant Number
Subject Keywords:Highly Nonlinear Waves, Nondestructive Evaluation, Novel Actuators
Series Name:Proceedings of SPIE
Issue or Number:7292
Record Number:CaltechAUTHORS:20161004-131950659
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Official Citation:Devvrath Khatri ; Chiara Daraio and Piervincenzo Rizzo "Coupling of highly nonlinear waves with linear elastic media", Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 72920P (March 30, 2009); doi:10.1117/12.817574
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:70829
Deposited By: Ruth Sustaita
Deposited On:04 Oct 2016 20:54
Last Modified:03 Oct 2019 16:01

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