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http://dx.doi.org/10.5050/KSNVE.2014.24.5.399

Development of Underwater Acoustic Performance Measurement System Using Pulse Tubes  

Seo, Yun-Ho (Korea Institute of Machinery and Materials(KIMM))
Kim, SangRyul (Korea Institute of Machinery and Materials(KIMM))
Lee, Sung-Min (Korea Institute of Machinery and Materials(KIMM))
Byun, Yang-Heon (Hwaseung R&A)
Seo, Youngsoo (Agency for Defense Development)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.24, no.5, 2014 , pp. 399-406 More about this Journal
Abstract
Underwater acoustic materials are installed in order to reduce reflection, transmission and radiation of an underwater structure. The acoustic performance of the materials should be evaluated in accurately-controlled environment in terms of temperature and static pressure. In this paper, two pulse tubes, which are equipped with temperature and pressure controllers, are designed and developed to evaluate echo reduction(ER) and transmission loss(TL) of underwater acoustic materials. The procedures of the evaluation are suggested and the validation is carried out by comparing theoretical values to experimental results for a simple stainless steel specimen and free surface. In result, it is validated that developed pulse tubes are able to measure ER and TL with 2 dB tolerance.
Keywords
Underwater Acoustic Material; Pulse Tube; Impedance Tube; Echo Reduction; Transmission Loss;
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1 Humphrey, V. F., Robinson, S. P., Smith, J. D., Martin, M. J., Beamiss, G. A., Hayman, G. and Carrol, N. L., 2008, Acoustic Characterization of Panel Materials Under Simulated Ocean Conditions Using a Parametric Array Source, Journal of Acoustic Society of America, Vol. 123, No. 2, pp. 803-814.   DOI
2 Easwaran, V. and Munjal, M. L., 1995, A Note on the Eeffect of Wall Compliance on Lowest-order Mode Propagation in Fluid-filled/submerged Impedance Tube, Journal of Acoustic Society of America, Vol. 97, No. 6, pp. 3494-3501.   DOI
3 Piquette, J. C. and Stephen, E. F., 2001, Low-frequency Echo-reduction and Insertion-loss Measurements from Small Passive-material Samples Under Ocean Environmental Temperatures and Hydrostatic Pressures, Journal of Acoustic Society of America, Vol. 110, No. 4, pp. 1998-2006.   DOI
4 ASTM E1050-12, 2012, Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones and A Digital Frequency Analysis System.
5 Lee, S. H., Kim, J. S., Kim, H. S., Kim, B. K. and Kim, S. R., 2011, Measurement of Underwater Acoustic Properties Using Impulse Signal, Proceedings of the KSNVE Annual Spring Conference, pp. 283-284.
6 Munjal, M. L., 1987, Acoustics of Ducts and Mufflers, John Wiley & Sons, Inc., New York.