|Table of Contents|

Experimental research of acoustic effect generated by sequential underwater explosions

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2014年01期
Page:
106-110
Research Field:
Publishing date:

Info

Title:
Experimental research of acoustic effect generated by sequential underwater explosions
Author(s):
Sheng ZhenxinLiu RongzhongGuo Rui
School of Mechanical Engineering,NUST,Nanjing 210094
Keywords:
sequential underwater explosions interval time wavelet transform power spectrum estimation
PACS:
TB561; TJ410.4
DOI:
-
Abstract:
Sequential underwater explosions with an interval time are used as an acoustic source to study the characters of signals generated by sequential underwater explosions.The signals generated by single explosion is filtered into 2 kHz,5 kHz and 10 kHz.The reverberation levels at different frequencies are analyzed to obtain the law of scattering strength to frequency.The signal generated by sequential underwater explosions are analyzed using wavelet transform combined with power spectrum estimation.Some conclusions are obtained:(1)the peak pressures of shock waves generated by sequential underwater explosions with shorter interval time is higher,so as the strength of shockwaves;(2)the strength of signals generated by sequential underwater explosions with different interval time spreads uniformly in low frequency range; in high frequency range,the strength of signals generated by sequential underwater explosions with shorter interval time is higher.

References:

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Last Update: 2014-02-28