A comparative experiment for the analysis of microwave and thermal process induced strains of carbon fiber/bismaleimide composite materials

作者：Li Nanya; Li Yingguang^*; Hao Xiaozhong; Gao James

来源：Composites Science and Technology, 2015, 106: 15-19.

DOI：10.1016/j.compscitech.2014.10.008

• Residual stress
• Microwave processing
• Polymer-matrix composites (PMCs)

Carbon fiber reinforced bismaleimide composites provide many outstanding properties and are widely used in aerospace applications. However, cure-induced strains are present in virtually all composites that severely impact on the whole service lifecycle of composite components. This paper will demonstrate that the cure-induced strains can be drastically reduced in fiber/bismaleimide composites using the microwave curing process. Nearly 95% reduction of cure-induced strains has been achieved compared with the conventional thermal heating process. The microwave manufacturing cycle for composites was only 36% of the thermal processing cycle. When using the microwave process, the spring-in angle of an L-shaped part was reduced by about 1.2 degrees compared by using thermal heating.

• 出版日期2015-1-16
• 单位南京航空航天大学