Optical observation of shock waves and cavitation bubbles in high intensity laser-induced shock processes.

Autor: Martí-López L; Departamento de Láser, Asociación Industrial de Optica, Color e Imagen. Parque Tecnológico de Valencia, 46980 Valencia, España. lmarti@aido.es, Ocaña R, Porro JA, Morales M, Ocaña JL
Jazyk: angličtina
Zdroj: Applied optics [Appl Opt] 2009 Jul 01; Vol. 48 (19), pp. 3671-80.
DOI: 10.1364/ao.48.003671
Abstrakt: We report an experimental study of the temporal and spatial dynamics of shock waves, cavitation bubbles, and sound waves generated in water during laser shock processing by single Nd:YAG laser pulses of nanosecond duration. A fast ICCD camera (2 ns gate time) was employed to record false schlieren photographs, schlieren photographs, and Mach-Zehnder interferograms of the zone surrounding the laser spot site on the target, an aluminum alloy sample. We recorded hemispherical shock fronts, cylindrical shock fronts, plane shock fronts, cavitation bubbles, and phase disturbance tracks.
Databáze: MEDLINE