Title :
A quantitative schlieren method for the investigation of axisymmetrical shock waves
fDate :
31 Oct-3 Nov 1993
Abstract :
Schlieren methods are well established to visualize acoustical, thermodynamic, and other phenomena, which influence the refractive index distribution in transparent media. We propose a quantitative schlieren method for the investigation of an ultrasonic field distribution generated by an electromagnetic (EM) shock wave source. In our schlieren system we have used a shiftable slit with variable width for sampling the angular spectrum of diffracted light. To compute the pressure distributions of shock waves a tomographical concept has been utilized. We discuss accuracy and limitations of the schlieren method and compare reconstruction results with sensor measurements
Keywords :
acoustic field; acoustic imaging; light interferometry; nonlinear acoustics; schlieren systems; shock waves; axisymmetrical shock waves; pressure distributions; quantitative schlieren method; reconstruction results; refractive index distribution; tomographical concept; ultrasonic field distribution; Diffraction; Distributed computing; Lenses; Light sources; Lithotripsy; Optical propagation; Optical pulses; Refractive index; Shock waves; Testing;
Conference_Titel :
Ultrasonics Symposium, 1993. Proceedings., IEEE 1993
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1993.339504
