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http://dx.doi.org/10.5574/KSOE.2011.25.1.067

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, Cheon-Hong (Graduate School of Korea Maritime University)
Park, Han-Il (Department of Ocean Engineering, Korea Maritime University)
Bae, Soo-Ryong (Agency of Defense Development)
Jeon, Jae-Jin (Agency of Defense Development)
Publication Information
Journal of Ocean Engineering and Technology / v.25, no.1, 2011 , pp. 67-72 More about this Journal
Abstract
Offshore structures, such as a platform, a buoy, or a floating vessel, are exposed to several dynamic loads, and viscoelastic damping material is used to reduce the vibration of offshore structures. It is important to know the properties of viscoelastic materials because loss factor and Young's modulus of the viscoelastic damping material are dependent on frequency and temperature. In this study, an advanced technique for obtaining accurate loss factor and Young's modulus of the viscoelastic damping material is introduced based on a multi degree of freedom curve-fitting method and the RKU (Ross-Kerwin-Ungar) equations. The technique is based on a modified experimental procedure from ASTM E 756-04. Loss factor and Young's modulus of the viscoelastic damping material are measured for different temperatures by performing the test in a temperature-controlled vibration measurement room where temperature varies from 5 to 45 degrees Celsius.
Keywords
Curve-fitting; Loss factor; Viscoelastic damping material; Young's modulus; Vibration analysis;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
연도 인용수 순위
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