국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Buckling and Final Failure of Carbon/Polyimide Stiffeners
저자	Shigeo SANBONGI, Yasumasa HAMAGUCHI
Keyword	Stiffener; Buckling; Carbon-polyimide; Composite
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr01286.pdf?id=NALTR0001286
보고서번호	NAL TR-1286
발행년도	1996.4
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	tics of carbon/polyimide(T-800H/PMR-15)laminated composite stiffeners,which are one of the candidates for spaceplane stuructural components,were investigated.The angle section and the T-section stiffeners were tested at room temperature and at 300℃.For the angle section stiffeners,the drop in the bucking strength at 300℃ was less than 5％ compared with the room temperature test results when the aspect ratio is greater than four,and the drop in the final failure strength was less than 15％.The predicted buckling strengths of the specimen with the mechanical fixture were close to the test results.For the T-section stiffeners,the primary objective of this study was to evaluate the effect of the corner radius at a flange-web junction on buckling and on final failure strength.The buckling strengths predicted with the analytical model including an actual corner shape coincide with the experimental test results,and a significant increase in buckling strength due to the increase in the corner radius was shown.