[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.7473/EC.2018.53.4.195

Acoustic Properties of Rubber Compound for Anechoic Coating

Bae, Jong Woo (Korea Institute of Footwear and Leather Technology)
Kim, Won Ho (Department of Material Engineering, Pusan National University)
Ahn, Byung Hyun (Department of Material Engineering, Pukyong National University)

Publication Information

Elastomers and Composites / v.53, no.4, 2018 , pp. 195-201 More about this Journal

Abstract

Three kinds of rubber compounds were prepared, and their underwater acoustical properties were investigated for anechoic coating. Dynamic mechanical properties of the rubber compounds were measured using a dynamic mechanical analyzer and extended to 100 kHz using time-temperature superposition. The sound speed, reflection coefficient, and attenuation constant were calculated. Silicone rubber showed the lowest reflection coefficient, and nitrile rubber showed the highest attenuation constant. The acoustic properties of nitrile rubber compounds with various compositions were investigated. The sound speed, reflection coefficient, and transmission coefficient of the nitrile rubber in the frequency range of 200-1000 kHz were measured in a water-filled tank.

Keywords

silicone rubber; butyl rubber; nitrile rubber; time-temperature superposition; sound speed; reflection coefficient; attenuation constant;

Citations & Related Records

Reference

1	W. S. Cramer, "Acoustical Properties of Rubber as a Function of Chemical Composition", U.S. Nav. Ord. Lab. Rep. NAVORD 1778 (1951).
2	K. Brendel and H. W. Leuschner, "Resonance-Absorbers for Waterborne Sound with Viscous Losses in Fluid Layers", Acta Acustica, 21, 260 (1969).
3	D. L. Folds and C. D. Loggins, "Transmission and Reflection of Ultrasonic Waves in Layered Media", J. Acoust. Soc. Am., 62, 1102 (1977). DOI
4	R. Lane, "Absorption Mechanisms for Waterborne Sound in Alberich Anechoic Layers", Ultrasonics, 19, 28 (1981). DOI
5	V. K. Varadan, Y. Ma, and V. V. Varadan, "A Multiple Scattering Theory for Elastic Wave Propagation in Discrete Random Media", J. Acoust. Soc. Am., 77, 375 (1985). DOI
6	M. K. Hinders, B. A. Rhodes, and T. M. Fang, "Particle-Loaded Composites for Acoustic Anechoic Coatings", J. Sound Vib., 185, 219 (1995). DOI
7	A. M. Baird and F. H. Kerr, "Wave Propagation in a Viscoelastic Medium Containing Fluid-filled Microspheres", J. Acoust. Soc. Am., 105, 1527 (1999). DOI
8	S. M. Ivansson, "Sound Absorption by Viscoelastic Coatings with Periodically Distributed Cavities", J. Acoust. Soc. Am., 119, 3558 (2006). DOI
9	C. Qian and Y. Li, "Review on Multi-Scale Structural Design of Submarine Stealth Composite", 2017 2nd International Conference on Architectural Engineering and New Materials (ICAENM 2017), 494 (2017).
10	Z. H. Liu and M. P. Sheng, "Study on Characteristics of Sound Absorption of Underwater Visco-Elastic Coated Compound Structures", Mod. Appl. Sci., 3, 32 (2009).
11	P. H. Motta, C. M. Roland, and R. D. Corsaro, "Acoustic and Dynamic Mechanical Properties of a Polyurethane Rubber", J. Acoust. Soc. Am., 111, 1782 (2002). DOI
12	J. Jarzynski, ''Mechanisms of Sound Attenuation in Materials,'' in Sound and Vibration Damping with Polymers, ed. by R. D. Corsaro and L. H. Sperling, ACS Symposium Series 424, American Chemical Society, Washington, DC, 1990.
13	R. J. Bobber, "Underwater Electroacoustic Measurements", pp. 287-313, Peninsula Publishing, Los Altos, CA, 1988.
14	B. Hartmann, ''Relation of Polymer Chemical Composition to Acoustic Damping", ed. by R. D. Corsaro and L. H. Sperling, ACS Symposium Series 424, American Chemical Society, Washington, DC, 1990.