Indicator of Vibroacoustic Energy Propagation as a Selection Criterion of Design Solution

Abstract

Contemporary tools which help to design technical objects refer to the conclusions drawn from studying the changes of physical processes accompanying the exploitation, especially to vibroacoustic processes. The main problem is to define such vibroacoustic measures, where their changes would model the analyzed physical phenomena in the best way. Basing on simple indicators which refer to occurring phenomena, it is possible to obtain accurate solutions with a satisfactory reliance level without using complex computing techniques needing detailed descriptors. According to the author, the indicators which are based on the analysis of vibroacoustic energy propagation are very useful in solving engineering problems. These indicators are useful while diagnosing the condition of technical systems, identifying and minimizing the vibroacoustic risks. The possibilities of using such indicators in order to find design solution are illustrated by sample results of the research of the structures with vibroacoustic elements which reduce the noise of rail vehicles by the rail vibration damping.

Possibilities of diagnosing breathing disorders during sleep in home conditions

“…The vibroacoustic signal is a good carrier of information not only for technical but also for biological objects [8][9][10][11]. It is hypothesized that information about individual breathing disorders can be extracted from sound pressure [11][12][13][14].…”

“…The vibroacoustic signal is a good carrier of information not only for technical but also for biological objects [8][9][10][11]. It is hypothesized that information about individual breathing disorders can be extracted from sound pressure [11][12][13][14]. The development of a diagnostic tool requires the acquisition of representative samples of snoring associated with patients airway conditions.…”