Mach stem formation in outdoor measurements of acoustic shocks
Author(s) -
Kevin M. Leete,
Kent L. Gee,
Tracianne B. Neilsen,
Tadd Truscott
Publication year - 2015
Publication title -
the journal of the acoustical society of america
Language(s) - English
Resource type - Journals
eISSN - 1520-8524
pISSN - 0001-4966
DOI - 10.1121/1.4937745
Subject(s) - mach number , shock (circulatory) , acoustics , mach wave , shock wave , microphone , reflection (computer programming) , point (geometry) , work (physics) , triple point , physics , optics , mechanics , geology , computer science , geometry , mathematics , sound pressure , medicine , thermodynamics , programming language
Mach stem formation during outdoor acoustic shock propagation is investigated using spherical oxyacetylene balloons exploded above pavement. The location of the transition point from regular to irregular reflection and the path of the triple point are experimentally resolved using microphone arrays and a high-speed camera. The transition point falls between recent analytical work for weak irregular reflections and an empirical relationship derived from large explosions.
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