Pulse-echo method can't measure wave attenuation accurately

Autor:	Pal, Barnana
Rok vydání:	2014
Předmět:	Physics - Instrumentation and Detectors Condensed Matter - Other Condensed Matter
Zdroj:	Ultrasonics 61 (2015) 6
Druh dokumentu:	Working Paper
DOI:	10.1016/j.ultras.2015.03.005
Popis:	A number of techniques with different degrees of accuracies have been devised for the measurement of acoustic wave attenuation in solids and liquids. Still, a wide variation is observed in the attenuation values in different materials reported in the literature. Present numerical study based on a 'propagating wave' model analysis clearly shows that the attenuation constant obtained from exponential fitting of the echo heights in pulse-echo method differs from the exact value of intrinsic attenuation in the medium, even in the ideal situation of plane wave propagation without diffraction, dispersion or scattering. Comment: 7 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1411.4374 Zobrazit plný text záznamu View this record from Arxiv