CF/PEEKの高温疲労信頼性に係わる複合劣化の機構解析 : 鋭い切欠底に展開される熱的・力学的疲労
スポンサーリンク
概要
- 論文の詳細を見る
The complex deterioration on fatigue reliability at elevated temperature for carbon-fiber-rein-forced PEEK was examined. In particular, the influence of thermal and mechanical fatigue on the fatigue mechanism of a sharp notched specimen was focused on. The main results were as follows. (1) An S-N curve was formed as a polygonal line having a downward convex regardless of the environmental temperature and fiber content. For long fatigue life, the influence of the carbon-fiber-content on fatigue strength was more remarkable than for a short fatigue life. (2) From fractography using SEM (Scanning Electron Microscope), temperature rise and cyclic deformation measurements, it was found that the fatigue mechanism for short life (N_f<10^5) is thermal fatigue, while one for long life (N_f>10^5) is mechanical fatigue. (3) The resistant mechanism against FCP (Fatigue Crack Propagation) in thermal fatigue is the capability to convert from strain energy into thermal energy, while that of mechanical fatigue is the bridging effect of reinforced fiber.
- 1997-08-25
論文 | ランダム
- 12.脳卒中患者の注意力測定(第3報) : 半側無視症状に及ぼす凝視点の有無の影響(認知1)
- Electron Temperature Measurement in J.I.P.P.T-II Device
- 臨床報告 牛車腎気丸で原因不明外陰部痛が軽快するとともに排尿障害が改善した一例
- 線形筋と括約筋を用いた筋肉パラメータに基づく表情顔画像の合成
- 韻律の部分空間を用いた感情音声合成