Modal analysis of laser vibrated structures

Philp, Wayne Reginald (1993) Modal analysis of laser vibrated structures. PhD thesis, Victoria University of Technology.

Abstract

This thesis describes the laser irradiation of metallic structures to excite mechanical vibrations within those structures. As found by other authors, single high-power laser pulses ablate the irradiated surface material and may impulsively excite structural vibration; however, the use of laser power densities above the ablation threshold causes significant surface damage. This work extends current optical excitation techniques by demonstrating that a single laser pulse, with a power density below the surface ablation threshold, can also efficiently induce flexural vibration in a structure.

Item type Thesis (PhD thesis)
URI https://vuir.vu.edu.au/id/eprint/15308
Subjects Current > FOR Classification > 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
Historical > Faculty/School/Research Centre/Department > School of Engineering and Science
Keywords Modal analysis, lasers in engineering, nondestructive testing, laser irradiation, optical excitation
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