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Highly nonlinear waves' sensor technology for highway infrastructures

Khatri, Devvrath and Daraio, Chiara and Rizzo, Piervincenzo (2008) Highly nonlinear waves' sensor technology for highway infrastructures. In: Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2008. Proceedings of SPIE. No.6934. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 69340U. ISBN 9780819471208.

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This paper describes preliminary results towards the development of an innovative NDE/SHM scheme for material characterization and defect detection based on the generation of highly nonlinear solitary waves (HNSWs). HNSWs are stress waves that can form and travel in highly nonlinear systems (i.e. granular, layered, fibrous or porous materials) with a finite spatial dimension independent on the wave amplitude. Compared to conventional linear waves, the generation of HNSWs does not rely on the use of electronic equipment (such as an arbitrary function generator) and on the response of piezoelectric crystals or other transduction mechanism. HNSWs possess unique tunable properties that provide a complete control over tailoring: 1) the choice of the wave's width (spatial size) for defects investigation, 2) the composition of the excited train of waves (i.e. number and separation of the waves used for testing), and 3) their amplitude and velocity. HNSWs are excited onto concrete samples and steel rebar. The first pilot study of this ongoing effort between Caltech and the University of Pittsburgh is presented.

Item Type:Book Section
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Daraio, Chiara0000-0001-5296-4440
Additional Information:© 2008 Society of Photo-Optical Instrumentation Engineers (SPIE). Chiara Daraio and Piervincenzo Rizzo acknowledge the support of Caltech and Pitt startup funds, respectively.
Funding AgencyGrant Number
University of PittsburghUNSPECIFIED
Subject Keywords:Highly nonlinear solitary waves, Nondestructive Evaluation, material characterization
Series Name:Proceedings of SPIE
Issue or Number:6934
Record Number:CaltechAUTHORS:20180723-114843030
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Official Citation:Devvrath Khatri, Chiara Daraio, Piervincenzo Rizzo, "Highly nonlinear waves' sensor technology for highway infrastructures", Proc. SPIE 6934, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2008, 69340U (8 April 2008); doi: 10.1117/12.775848;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88132
Deposited By: George Porter
Deposited On:23 Jul 2018 19:36
Last Modified:16 Nov 2021 00:24

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