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Proceedings Paper

Laser induced highly nonlinear solitary waves for structural NDE
Author(s): Xianglei Ni; Ricki Garden; Piervincenzo Rizzo
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Paper Abstract

This paper describes the generation and propagation of highly nonlinear solitary waves (HNSWs) in a chain of steel beads excited by means of laser pulses. Ablative generation of mechanical stress was induced on the bead at one end of the chain in order to enhance the amplitude of the stress waves generated. Compared to the use of a mechanical striker, the laser-based generation of stress waves is fully non-contact and allows for the broadest energy spectrum. In this study the amplitude, duration, and velocity of the solitary waves propagating along the chain of beads as a function of the laser pulse energy is investigated. Moreover the application of HNSW as a pulse generator for the NDE of bulk structures is shown.

Paper Details

Date Published: 31 March 2010
PDF: 7 pages
Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 76470S (31 March 2010); doi: 10.1117/12.847428
Show Author Affiliations
Xianglei Ni, Univ. of Pittsburgh (United States)
Ricki Garden, Univ. of Pittsburgh (United States)
Piervincenzo Rizzo, Univ. of Pittsburgh (United States)


Published in SPIE Proceedings Vol. 7647:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010
Masayoshi Tomizuka, Editor(s)

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