以碳纤维或硼纤维为增强剂的新型复合材料是近十几年来发展起来的。它具有刚度大、强度高、比重小、耐疲劳等特点,是一种比较理想的航空结构材料。国内近十年来已开始用碳纤维/环氧树脂复合材料研制航空零件,并进行了试验。在使用金属材料制作零件时,一般先选取一种一定形状的材料,然后进行加工成型。而复合材料却往往不采用这样的步骤。复合材料的一个最大特点是各向异性,有三个相互垂直 The new composite material with carbon fiber or boron fiber as reinforcing agent has developed in recent ten years. It has a large stiffness, high strength, small proportion, fatigue resistance, etc., is an ideal aviation structure materials. In the past ten years, China has begun to develop aviation parts with carbon fiber / epoxy composite materials and conducted experiments. In the production of metal parts, the general first select a certain shape of the material, and then processing molding. Composite materials often do not use such a step. One of the most prominent features of composites is anisotropy, with three perpendicular to each other