先端複合材料 (T-800/PMR-15) の高温環境における減衰特性
1994 年 42 巻 485 号 p. 389-394
詳細
1994 年 42 巻 485 号 p. 389-394
An experimental study on damping properties of laminated composite beams is reported. Unidirectionally stiffened, angle-plyed, and quasi-isotropic specimens made of T-800/PMR-15 laminates have been exposed to elevated temperature environment up to 300°C. Test specimens have been clampled at one end and electromagnetically excited at free end. Changes in amplitude of beams in damped free vibration have been measured and the logarithmic decrement and damping ratio have been calculated. Some considerations about the experimental results and usability of Adams' approach are given.
