An Experimental Study on the Measurement of Elastic and Damping Coefficients of a Composite Material

박한일,; 손재근,; 민천홍,; 배수룡,

doi:10.3744/snak.2007.44.1.026

Cited by 3 publications

(1 citation statement)

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“…탄 성계수 (modulus of elasticity) 및 손실계수 (loss tangent) 는 물질의 특성을 대표하는 물성치로서 제진구 및 흡차음재의 설계에 있어서 매우 중요하 며 많은 실험적 측정 사례들이 보고된 바 있다. (Kim et al 1999, Park et al 2007.…”

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Measurement Method of Broadband Dynamic Characteristics of Viscoelastic Material for Compliant Coating

Seoudi¹,

Бойко²,

Chun³

et al. 2008

Journal of the Society of Naval Architects of Korea

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An improved method to measure the dynamic viscoelastic properties of elastomers is proposed. The method is based on the analysis of forced oscillation of a cylindrical sample loaded with inertial mass. No special equipment or instrumentation other than the ordinary vibration measurement apparatus is required. Typical measurement of the viscoelastic properties of a silicone rubber Silastic ® S2 were measured over the wide frequency range from 10 Hz to 3 kHz under the action of wide region of deformation from 10-4 % to 5%. It was shown that modulus of elasticity and loss tangent fall on the single curves when the ratio of load mass to sample mass changed from 1 to 20. ※Keywords: Compliant coating(유연벽면), Viscoelastic material(점탄성 물질), Dynamic characteristics(동특성), Modulus of elasticity(탄성계수), Loss tangent(손실계수)

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Section: 서론unclassified

Measurement Method of Broadband Dynamic Characteristics of Viscoelastic Material for Compliant Coating

Seoudi¹,

Бойко²,

Chun³

et al. 2008

Journal of the Society of Naval Architects of Korea

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Design for Improving the Loss Factor of Composite with Sandwich Structure

Lee¹,

Jeon²,

Kang³

et al. 2016

Transactions of the Korean Society for Noise and Vibration Engi

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Underwater weapon system is required to structurally strong material, since as it is directly exposed to external shock. It should also be using the lightweight material in order to take advantage of buoyancy. Composite materials meet these requirements simultaneously. Particularly in the case of submarine, composite materials are widely used. It is important to have a high strength enough to be able to withstand external shock, but it is also important to attenuate it. In a method for the shock damping, viscoelastic damping materials are inserted between the high strength composite material as a sandwich structure. Shock attenuation can be evaluated in the loss factor. In ASTM(American Society of Testing Materials), evaluation method of the loss factor of cantilever specimens is specified. In this paper, mode tests of the cantilever are performed by the ASTM standard, in order to calculate the loss factor of the viscoelastic damping material by the specified expression. Further, for verifying of the calculated loss factor, mode test of compound beams is carried out. In addition, the characteristics of the material were analyzed the effect on the loss factor.

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Study of the Measurement of Young's Modulus and Loss Factor for a Viscoelastic Damping Material Using a Multi Degree of Freedom Curve Fitting Method and RKU Equation

Min

Park²,

Bae³

et al. 2011

Journal of Ocean Engineering and Technology

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An Experimental Study on the Measurement of Elastic and Damping Coefficients of a Composite Material

Cited by 3 publications

References 0 publications

Measurement Method of Broadband Dynamic Characteristics of Viscoelastic Material for Compliant Coating

Measurement Method of Broadband Dynamic Characteristics of Viscoelastic Material for Compliant Coating

Design for Improving the Loss Factor of Composite with Sandwich Structure

Study of the Measurement of Young's Modulus and Loss Factor for a Viscoelastic Damping Material Using a Multi Degree of Freedom Curve Fitting Method and RKU Equation

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