A coupled micro–macromechanical analysis of hygrothermoelastic composites

Three-dimensional quasi-steady-state problem of moving heat and diffusion sources in an infinite solid

“…In the fixed rectangular Cartesian coordinate system (x, y, z), the modified Fourier's equation of heat conduction and Fick's equation of moisture diffusion can be written as (Sih et al, 1986;Aboudi and Williams, 2000) …”

“…In modern polymer-matrix composite, the influence of temperature and moisture changes on the behaviors of the material is critical and has been investigated extensively (see for example, Sih et al, 1986;Chang and Chao, 1993;Altay and Dokmeci, 2000;Aboudi and Williams, 2000;Hsieh and Hwu, 2006 and the references cited therein). Under hygrothermal environment, the thermodiffusion effect (Soret effect), which refers to the mass diffusion induced by thermal gradient, and the diffusionthermo effect (Dufour effect), which refers to the heat transfer induced by moisture concentration gradient, should be given special attention (Sih et al, 1986;Hyer, 1988;Altay and Dokmeci, 2000;Aboudi and Williams, 2000). It is added that the Soret effect and the Dufour effect are also present in binary liquid mixtures (Hort et al, 1992;Kim et al, 2007).…”

Radial pressure and thickness effects on the moisture diffusion in hollow composite cylinders

“…Therefore, models have been developed to predict the multi-scale mechanical states occurring during both the transient stage and the permanent regime of the moisture diffusion process of organic matrix composites submitted to hygro-mechanical loads [10][11][12][13][14]. In this field of research, the most recent investigations [15][16][17][18][19] focus upon taking into account, in the theoretical approaches, various features of hygro-mechanical coupling, especially the dependence of both the moisture diffusion coefficient and the maximum moisture absorption capacity on the mechanical states (strains and stresses), as shown, for instance, in [20][21][22][23][24]. More recent works, made by Autran et al [25] and Wan et al [26], have experimentally demonstrated the influence of mechanical loading on the moisture diffusion behavior.…”

The effect of moisture-induced swelling on the absorption capacity of transversely isotropic elastic polymer–matrix composites

“…All the above papers include transient diffusion and are limited to non-reinforced polymers (or, more generally, classes of homogeneous materials). The theory of stress-diffusion coupling in composites has been considered scarcely, but Aboudi and Williams (2000) did propose a complex analysis for transient regimes, whereas Derrien and Gilormini (2007) focused more simply on steady state. The present study is limited to composites with transverse isotropy, which includes many frequent cases where long fibers are used as reinforcements.…”