Accurate Measurement of Loss Factor and Young's Modulus for a Composite Structure Using a Multi Degree of Freedom Curve-Fitting Method

被引：0

作者：

Park, Han-Il ^{[1
]}

Min, Cheon-Hong ^{[1
]}

Bae, Soo-Ryong ^{[1
]}

机构：

[1] Korea Maritime Univ, Div Ocean Dev Engn, Pusan, South Korea

来源：

PROCEEDINGS OF THE EIGHTEENTH (2008) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL 4 | 2008年

关键词：

Modal parameter identification; Viscoelastic damping; curve-fitting; Loss factor; Composite structures; Damping material; Young's modulus;

D O I：

暂无

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

Offshore and ship structures are under several dynamic loads. The reduction of structural vibration is one of the key design aspects and composite materials are used to reduce vibration. Understanding viscoelastic properties of composite materials is essential for the design and analysis of the structures. Specially, the loss factor and Young's modulus must be known to develop finite element codes for a composite structure with several damping materials. In this study, an advanced technique for obtaining accurate loss factor and Young's modulus of a composite structure is introduced based on a multi degree of freedom curve-fitting method and the RKU (Ross-Kerwin-Ungar) equations. The loss factor and Young's modulus of a composite structure are measured for different temperatures by performing the test in a vibration measurement room where temperature varies from 5 to 45 Celsius.

引用

页码：390 / +

页数：2