TAILIEUCHUNG - Báo cáo "Determining thermal expansion coefficients of three-phase fiber composite material reinforced by spherical particles "

Thermal expansion property of three-phase fiber composite material reinforced by spherical particles is one of important properties of this material. In this paper, we would like to propose a way in order to determine thermal expansion coefficients of three-phase composite reinferced by fibres and spherical particles. Keywords: thermal expansion coefficients, three-phase composite material, aligned fibres, spherical particles, effective matrix phase. | VNU Journal of Science Mathematics - Physics 24 2008 57-65 Determining thermal expansion coefficients of three-phase fiber composite material reinforced by spherical particles Nguyen Dinh Duc1 Luu Van Boi1 Nguyen Tien Dac2 1 Vietnam National University 144 Xuan Thuy Cau Giay Hanoi Vietnam 2Hanoi University of Construction 55 Giai Phong Hanoi Vietnam Received 30 May 2008 received in revised form 10 June 2008 Abstract. Thermal expansion property of three-phase fiber composite material reinforced by spherical particles is one of important properties of this material. In this paper we would like to propose a way in order to determine thermal expansion coefficients of three-phase composite reinferced by fibres and spherical particles. Keywords thermal expansion coefficients three-phase composite material aligned fibres spherical particles effective matrix phase. 1. Introduction Composite material is commonly used in modern structures by more advanced advantages than other types of composite material 1 . One of investigated materials is three-phase fiber composite material reinforced by spherical particles. In it the fibre phase is taken to compose of a number of long circular cylinders embedded into a continous matrix phase. The third phase is the particle phase which is assumed by means of isotropic homogeneous elastic spheres of equal radii and embedded into the matrix phase of this composite material. For three-phase composite material reinforced by fibres and spherical particles there are many relative problems necessary to solve. Algorithm determining technique modulus of three-phase fiber composite material reinforced by spherical particles is presented by 2 . Authors in 3 have brought out the expression determining Young modulus E1 1 of three-phase composite material of aligned fibres and spherical particles. In the paper we only force to investigate the thermal expansion behaviour of composite because it is one of very important specificity necessary to consider

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