Speed of Surface Elastic Wave Propagation over the Human Chest

Autor:	M. V. Veremyeva, E. S. Fomina, A. I. Dyachenko
Rok vydání:	2020
Předmět:	Materials science Wave propagation Acoustics General Physics and Astronomy Frequency dependence Accelerometer 01 natural sciences Transfer function 010309 optics Vibration 0103 physical sciences Elasticity (economics) 010306 general physics Elastic wave propagation Phase method
Zdroj:	Physics of Wave Phenomena. 28:14-20
ISSN:	1934-807X 1541-308X
DOI:	10.3103/s1541308x20010033
Popis:	Speeds of surface elastic wave propagation over the human chest along and across the ribs are found. Ten healthy male volunteers have participated in the experiment. Vibrations of a striker-vibrator and a light accelerometer in contact with the chest have been detected using a specially designed hardware and software complex. The transfer function phase for passage of elastic waves over the chest is calculated. Wave propagation speeds are found using the phase method (frequency dependence of the transfer function phase). Differences between the speeds along and across the ribs are found in the frequency ranges from 27 to 100 Hz and from 100 to 200 Hz with the maximal-to-minimal speed ratio of 1.8. It is shown that one of the causes for the differences between the speeds can be different local elasticity and viscosity of the chest tissues.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7742d7f0e301490d0f2476f6c2fc3edb https://doi.org/10.3103/s1541308x20010033 Zobrazit plný text záznamu Full text from SpringerLink