Abstract

The current work investigates the influences of different surface modifications on the flexural characteristics of carbon fiber reinforced aluminum (AA2024-T3) laminates fabricated at 3/2 sequence. Among all types of surface modifications, mechanical abrasion by 220-grit paper shows highest flexural strength. The flexural load of Al/0°/Al/0°/Al configuration is about 19% higher in comparison with mechanical abrasion (220-grit paper) with chemical treatment due to higher interfacial strength. However, corrosion resistance is improved about 30 times in the later modification. In-situ imaging reveals that failure of Al/0°/Al/0°/Al laminates initiates by micro-buckling of carbon fiber whereas matrix cracking initiates the failure in Al/90°/Al/90°/Al laminates.

摘要

目前的工作研究了不同表面改性对以 3/2 顺序制造的碳纤维增强铝 (AA2024-T3) 层压板的弯曲特性的影响。在所有类型的表面改性中，220 粒度纸的机械磨损显示出最高的抗弯强度。由于较高的界面强度，Al/0°/Al/0°/Al 配置的弯曲载荷与采用化学处理的机械磨损（220 粒度纸）相比高出约 19%。然而，在后来的修改中，耐腐蚀性提高了大约 30 倍。原位成像表明，Al/0°/Al/0°/Al 层压板的失效是由碳纤维的微屈曲引起的，而基体开裂则导致 Al/90°/Al/90°/Al 层压板的失效。