Influence of fabric architecture and weaving parameter on the thermal conductivities of 3D woven composites

Abstract

To investigate the effect of fabric architectures and weaving parameters on thermal conductivities of three-dimensional woven composites, the 2.5D angle-interlock woven composites, 2.5D angle-interlock (with warp reinforcement) woven composites, and 3D orthogonal woven composites were prepared. The thermal conductivities of these woven composites were measured by using transient hot-wire method in this study. It was indicated that the thermal conductivities of three-dimensional woven composites showed significant differences due to the distribution of continuous fibers in three-dimensional woven composites with different structures, which could influence the sum fiber content on the cross section of heat flow. More importantly, compared with 2.5D angle-interlock woven composites and 2.5D angle-interlock (with warp reinforcement) woven composites, 3D orthogonal woven composites exhibited better performance in thermal conductivity. Overall, it was concluded that the thermal conductivities of three-dimensional woven composites were influenced by the fabric architectures and weaving parameters, such as the volume fraction, density, and types of fibers. Furthermore, the volume fraction of fibers on the cross section of heat flow was the dominant factor for thermal conductivities of different woven composites.

Characterizing the Thermal Diffusivity of Single, Micrometer-Sized Fibers via High-Resolution Lock-In Thermography

“…In either case, a precise knowledge of the thermal properties is essential to understanding and designing advanced materials with heat control. Knowing the properties of single fibers enables the design of the resulting material properties of fabrics and composite materials, taking into account appropriate models. − Measuring individual fibers gets excessively difficult the smaller the fiber diameter is.…”

Geometrical model of 3D layer-to-layer angle-interlock woven preforms with oblique structure

“…The linear density of the yarn and number of yarn layers in the fabric were found to have a significant influence on the in-plane shear properties. Zhao et al [15] prepared angle-interlock woven composites and studied the influence of the fabric structure on the thermal conductivity of braided composites. Sun et al [16] fabricated different types of 3D angle-interlock fabrics.…”

Factors influencing thermal resistance of a down sleeping bag

“…The thermal insulation property of sleeping bag depends not only on the properties of fabrics but also on the properties of filling (Li et al, 2017). In earlier studies, the conduction, convection and radiation of woven fabrics were widely analyzed (Bhattacharjee and Kothari, 2009), and the factors which influence thermal insulation of woven fabrics were discussed (Jankoska and Demboski, 2018); two-dimensional (Luo and Xu, 2006) and three-dimensional (Zhao et al, 2017) heat transfer models of fabrics were established. The heat transfer process and thermal property of hollow fiber, penguin down and feather as well as down fiber and its assembly were proposed (Wan et al, 2009).…”