@techreport{oai:jaxa.repo.nii.ac.jp:00040619,
 author = {濱口, 泰正 and 下河, 利行 and Hamaguchi, Yasumasa and Shimokawa, Toshiyuki},
 month = {Nov},
 note = {本研究の目的は、宇宙往還技術試験機(HOPE-X)の主構造用材料として選択されたカーボン/ポリイミド(T800H/PMR-15)複合材料の疲労強度特性を評価することである。ここでは、擬似等方積層材の有孔試験片を用い、室温環境において静強度試験ならびに疲労試験を行った。静的試験では、静的引張強度、静的圧縮強度および荷重と円孔変形量の関係を調べた。また、疲労試験では、代表的な3種類の応力比R=0.1、R=-1、R=-infinityにおけるS-Nの関係、残存引張・圧縮強度、ならびに円孔変形と繰返し数の関係から導かれる疲労損傷過程を調べた。これら試験から得た強度特性について、解析ならびに評価を行った結果を報告する。, The objective of this study is to investigate the fatigue properties of a T800H/PMR-15 carbon/polyimide composite, selected as a candidate material for the primary structure of the unmanned space reentry vehicle HOPE-X (H-2 Orbiting Plane Experimental). Both static and fatigue tests were conducted to obtain data on the mechanical properties for open-hole specimens of a quasi-isotropic laminate. These tests were conducted at room temperature. The static test investigated static compression strength and static tensile strength, and the relationship between open-hole deformation and load was also examined. The fatigue test investigated S-N relationships for stress ratios R = 0.1, R = minus infinity, and R = -1, and the residual strength of the non-failure specimens. The fatigue damage process arising from the relationship between number of cycles and open-hole deformation was also investigated. The results of analysis and evaluation of the strength characteristic obtained from these tests are reported., 資料番号: AA0001983000, レポート番号: NAL TR-1392},
 title = {カーボン/ポリイミド(T800H/PMR-15)複合材料有孔試験片の疲労強度},
 year = {1999}
}