Fracture morphology is more rough in room temperature, low fatigue stress and more fatigue cycles, but the length of fiberpullout is longer.
室温及疲劳循环应力低、循环周次多的断口粗糙度大，纤维拔出较长；
2
Basing on the results of the experiment, analyze the fail model of B-Fiber pulling out and present the formula of the peak pullout load which accords with the results of the experiment better.