界面剪切强度的AE监测及统计模型评估

MEASUREMENT OF FIBER FRAGMENT LENGTH DISTRIBUTION (SFC) WITH AE TECHNIQUE AND DETERMINATION OF THE INTERFACIAL SHEAR STRENGTH BY A STATISTICAL MODEL

本文成功地运用声发射(AE)技术测得玻璃丝单纤维复合材料(SFC)试验的临界断裂长度,并运用统计分析方法建立了韦伯分布纤维强度的修正界面剪切强度评估模型。本模型的计算结果与D.Jaques和J.P.Favre等模型作了比较,表明该模型描述界面剪切强度是比较切合实际的。

In this paper, the acoustic emission (AE) technique is success-fully applied to meassure the glass fiber fragment length distributions in Single- Fiber -Composite (SFC) test. The interfacial shear strength is determined by developing a statistical model using a Weibull model for fiber strength.A comparison is performed to the results of the statistical model and the model of D.Jaques and J.P. Favre, which shows that the statistical model is quite reasonable in determining the interfacial shear strength.