국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Effect of Moisture Absorption on Hot/Wet Compressive Strength of T800H/PMR-15 Carbon/Polyimide
저자	Yasumasa Hamaguchi, Toshiyuki Shimokawa, Hisaya Kato
Keyword	carbon/polyimide; moisture absorption; compression tests; statistical investigation; hot/wet; compressive strength; fracture modes; statistical properties; design allowable; traveler coupon; specimen thickness
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr0001413.pdf?id=NALTR0001413
보고서번호	NAL TR-1413
발행년도	2000.10
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	The objective of this study is to statistically investigate the effect of moisture absorption on the hot/wet compressive strength of a T800H/PMR-15 carbon/polyimide composite with a quasi-isotropic stacking sequence. Compression tests on moisture absorbed specimens were conducted at 260 C. These tests clarified the compression fracture mode, the effect of moisture absorption on the hot/wet compressive strength, statistical properties and a design allowable of hot/wet compressive strength, the effectiveness of a traveler coupon in monitoring moisture absorption, and the relationship between specimen thickness and hot/wet compressive strength. Important results were as follows: (1) Hot/wet compressive strength was found to be closely related to residual moisture content measured immediately after the test, and (2) The coefficient of variation of hot/wet compressive strength was found to be approximately twice as large as that of room temperature/dry compressive strength.