방수가능한 써멀마네킨 제작을 위한 최적 3D 프린팅 출력 조건 연구

Abstract

As the consumers’ interest in the functionality of clothing increases, various testmethods are being developed and standardized. Amongst them, thermal manikins arebeing actively used to test the thermal insulation property of clothing. However, it is difficultto commercialize them due to the high cost as well as the difference in the heatingmechanism from that of an actual human body. To resolve this issue, a new method forthree-dimensional (3D) printing will be explored that will consist of flexible heat pipesinside the printed manikin. However, the preliminary experiments have confirmed thatfluid leakage occurs at the bottom. Therefore, the conditions that have maximal waterproofperformance while minimizing the printing time for different materials such as polylacticacid (PLA) or thermoplastic polyurethane (TPU) as well as the g-code generationconditions, for instance, layer thickness and top/bottom surface fill pattern, were explored. The ultimate waterproof performance of the printed specimen was measured using the KSK ISO 811 test method. As a result, the linear structure of the PLA filaments was found tohave optimal waterproof performance with the shortest 3D printing time.