국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Study on tensile fatigue testing method of unidirectional fiber-resin matrix composites
저자	Yoshio NOGUCHI
Keyword	Unidirectional Composite Materials; GFRP; Tensile Fatigue Test; Tab Shape; Test Frequency; S-N Curve
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr01241.pdf?id=NALTR0001241
보고서번호	NAL TR-1241
발행년도	1994.7
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	The aim of the Versailles Project on Advanced Materials and Standards(VAMAS) program is to evaluate the mechanical properties of advanced materials.In this study,as a part of the polymer comosites,the first phase of this round robin test was carried out to examine the tension-tension fatigue properties of unidirectional GFRP and CFRP.Fatigue tests were undertaken in a sinusoidal load-controlled testing mode,with a load ratio of 0.1.In the case of CFRP tests,the comparison of cold-setting en of the specimen and the testing frequency of fatigue behavior of unidirectional CFRP specimen were examined.As for the tab configuration,10° tapered and untapered end-tab specimens were provided.On the testing frequency,fatigue tests were conducted with 2,5 and 10Hz.The difference of fatigue strength under these testing conditions was found to be small in the present study.