Abstract
This paper presents a combined experimental and theoretical study on the fundamental thermomechanical properties of high-porosity, wire-woven bulk Kagome (WBK) cellular cores fabricated using a newly developed technique. Particular focus is placed upon the influence of brazing on the strength, forced air convection characteristics, and effective thermal conductivity of thematerial. Upon uniaxial compressive loading, brazing of the WBK joints increases the core strength more than 10 times compared with that without brazing. Thermally, althoughbrazinghas no effect on the effective thermal conductivity, it leads to significantly enhanced heat dissipation under forced convection. In the absence of fluid flow, heat spreading along the lateral ligaments plays no part in conduction, whereas the tortuous ligaments along the direction of conduction act to reduce the effective conductivity. However, under forced convection, the activation of convection from the lateral ligaments as a result of brazing leads to pronounced enhancement of the overall heat dissipation capability.
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