Progress on Cure Monitoring for Liquid Composite Molding
WANG Yishou1, LI Yukun1, WU Di2, SUN Hu1, QING Xinlin1
( 1. School of Aerospace Engineering, Xiamen University, Xiamen 361005, China;
2. Research & Develop Center at Headquarters of China Academy of Launching Vehicle Technology, Beijing 100076, China )
Abstract：The complexity and dispersivity of composite manufacturing can easily make composite produce voids, porosity, dry spots, warping, delamination and other defects or damage during the cure process. These defects will seriously affect the quality of the composite material. On-line in-situ monitoring of cure process is an important means to control and improve the quality of composite. This paper focuses on the cure monitoring of liquid composite molding (LCM), which is increasingly used for producing high quality and complex composite structural parts. Firstly, the cure process of LCM is briefly introduced, and several physical parameters needed to monitor are analyzed. Secondly, the progresses on several on-line monitoring techniques for cure process are reviewed, including optical fiber method, ultrasonic method, electrical method and thermal method. Finally, the development trends and challenges of the cure monitoring for LCM are discussed.
2017, 
