CAJ | 학술논문

采用 T300碳纤维增强环氧树脂复合材料补片单面修复含中心裂纹铝合金(LY12CZ)板，板厚为1.76 mm和5.20 mm.测试了修复试件准静态拉伸和疲劳性能，分析了修复试件的准静态和疲劳破坏模式，考察了裂纹长度对修复效果的影响.结果表明：厚度为1.76 mm修复试件的拉伸破坏是由补片与铝合金板之间的胶黏剂层脱粘控制，而厚度为5.20 mm修复试件是由铝合金板中的裂纹扩展控制.对于厚度为1.76 mm 修复试件，其准静态拉伸性能随裂纹长度增大而降低，而疲劳性能随裂纹长度增大而提高.然而，厚度为5.20 mm修复试件的准静态拉伸和疲劳性能均随裂纹长度增大而降低.
채용 T300탄섬유증강배양수지복합재료보편단면수복함중심렬문려합금(LY12CZ)판，판후위1.76 mm화5.20 mm.측시료수복시건준정태랍신화피로성능，분석료수복시건적준정태화피로파배모식，고찰료렬문장도대수복효과적영향.결과표명：후도위1.76 mm수복시건적랍신파배시유보편여려합금판지간적효점제층탈점공제，이후도위5.20 mm수복시건시유려합금판중적렬문확전공제.대우후도위1.76 mm 수복시건，기준정태랍신성능수렬문장도증대이강저，이피로성능수렬문장도증대이제고.연이，후도위5.20 mm수복시건적준정태랍신화피로성능균수렬문장도증대이강저.
The present study investigated the quasi-static tensile and fatigue properties of the center-cracked thin and thick aluminum plate single-side repaired with T300 carbon fiber reinforced epoxy com-posite patches.The repair efficiency of the damaged thin and thick aluminum plates was compared with the tensile and fatigue properties,and the effect of the initial crack length on the properties of the repaired specimens was studied.Then,the tensile fracture mode of the repaired specimens was analyzed.The re-sults have shown that the repair efficiency of the thin aluminum plate is far higher than that of the thick a-luminum plate,and the tensile fracture mode of the repaired specimens has two kinds:the crack growth of the aluminum plate in the repaired specimen and the adhesive debond between the patch and the aluminum plate.