利用真空袋压工艺,采用单向炭纤维复合材料补片对中心裂纹铝合金板进行了单面胶接修补.测试了复合材料修补板的静态拉伸强度及修补板在拉拉疲劳过程中的裂纹扩展、界面脱粘和剩余拉伸强度等疲劳性能.结果表明,复合材料补片胶接修补能有效地提高裂纹板的破坏强度和刚度,降低裂纹板的疲劳裂纹扩展速率,提高其疲劳寿命.裂纹板经单向炭纤维/环氧复合材料补片修补后,其破坏强度从311.48 MPa提高到364.74 MPa,疲劳寿命从32217次提高到77546次.疲劳导致修补结构的粘接界面脱粘,脱粘区域近似椭圆形;脱粘面积随疲劳周次的增加而增加,且增加的幅度与疲劳周次相关.
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