Laser induced highly nonlinear solitary waves for structural NDE

Xianglei Ni; Ricki Garden; Piervincenzo Rizzo

doi:10.1117/12.847428

31 March 2010 Laser induced highly nonlinear solitary waves for structural NDE

Xianglei Ni, Ricki Garden, Piervincenzo Rizzo

Proceedings Volume 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010; 76470S (2010) https://doi.org/10.1117/12.847428
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

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.

Citation Download Citation

Xianglei Ni, Ricki Garden, and Piervincenzo Rizzo "Laser induced highly nonlinear solitary waves for structural NDE", Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 76470S (31 March 2010); https://doi.org/10.1117/12.847428

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