纤维取向对复合材料磨损性能影响的统计学研究

STATISTICAL STUDY OF EFFECT OF FIBRE ORIENTATION ON WEAR PROPERTIES OF COMPOSITES

采用挤压铸造法制备了３Ａｌ２Ｏ３２ＳｉＯ２ｆ／ＺＬ１０９复合材料。利用统计学方法研究了载荷为６００Ｎ、滑动速度为１．０５ｍ／ｓ的润滑滑动磨损条件下纤维取向对复合材料磨损性能的影响。研究结果表明：纤维平行取向与垂直取向复合材料的磨损体积均符合概率密度ｆ（ｘ）的同一总体的正态分布［式（１）］，纤维取向对复合材料的耐磨性影响不大。通过磨面的ＳＥＭ分析，发现两种纤维取向的复合材料的磨损均为纤维断裂与磨粒磨损。

Composites were fabricated by squeeze casting. By means of a statistical method, the effects of fibre orientation on wear properties of composites were studied under condition of lubricated sliding at load of 600N and velocity of 1.05ms-1. The results show that wear volumes of both fibre parallel and normaloriented composites accord with the same normal distribution of probability density f(x)(formula 1). Wear propeties of composites are independent of fibre orientation. Wear mechanisms of fibre parallel and normaloriented composites are fibre fracture and abrasive.