Speed of surface elastic waves propagation on the human chest wallстатья
Статья опубликована в журнале из списка RSCI Web of Science
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 17 июня 2020 г.
Аннотация:Speeds of surface elastic wave propagation over the human chest along and across the ribs arefound. 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 hardware and software complex mockup. 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 thedifferences between the speeds can be different local elasticity and viscosity of the chest tissues.