국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Wire and Cable Cold Bending Test
저자	Colozza, Anthony
Keyword	BENDING;; CRYOGENIC TEMPERATURE;; FAILURE;; FLEXIBILITY;; INSULATION;; LOW TEMPERATURE;; MECHANICAL PROPERTIES;; ROOM TEMPERATURE;; TORQUE;; WIRE
URL	http://hdl.handle.net/2060/20100008936
보고서번호	NASA/CR-2010-216086
발행년도	2010
출처	NTRS (NASA Technical Report Server)
ABSTRACT	One of the factors in assessing the applicability of wire or cable on the lunar surface is its flexibility under extreme cold conditions. Existing wire specifications did not address their mechanical behavior under cold, cryogenic temperature conditions. Therefore tests were performed to provide this information. To assess this characteristic 35 different insulated wire and cable pieces were cold soaked in liquid nitrogen. The segments were then subjected to bending and the force was recorded. Any failure of the insulation or jacketing was also documented for each sample tested. The bending force tests were performed at room temperature to provide a comparison to the change in force needed to bend the samples due to the low temperature conditions. The results from the bending tests were plotted and showed how various types of insulated wire and cable responded to bending under cold conditions. These results were then used to estimate the torque needed to unroll the wire under these low temperature conditions.