Radiative heat transfer effects in robust design of cooling mechanisms for low-vacuum FDM

This study focuses on fused deposition modeling (FDM), a type of additive manufacturing. In previous studies, FDM was performed under low vacuum conditions with the aim of improving the strength of printed objects made of PPS resin, a super engineering plastic, but it was difficult to obtain the desired printed shape because heat was not easily removed from the printed objects. Therefore, a cooling mechanism was developed to control the amount of heat removed from the object via radiative heat transfer. However, the shape of the object varies with each fabrication, and at present, the control parameters necessary for robust design are unknown. In this study, orthogonal experiments were conducted on objects of different areas to investigate the amount of heat removed from the object and the parameters effective for its control.