COMPOSITES SCIENCE AND ENGINEERING ›› 2014, Vol. 0 ›› Issue (5): 9-12.

• BASIC STUDY • Previous Articles     Next Articles

RESEARCH OF FBG-BASED COMPOSITE MATERIAL MOLDING AND IMPACT MONITORING

WU Xue1*, LI Wei1,2   

  1. 1. College of Textile Engineering, DongHua University, Shanghai 201620, China;
    2. Fabric Laboratory of Education Ministry, Shanghai 201620, China
  • Received:2013-09-16 Online:2014-05-28 Published:2021-09-14

Abstract: Carbon fiber composite (CFRP) is an advanced composite material that has been widely used, but internal delamination damage can easily occur when suffering an external shock due to its weak interlayer performance, which will result in mechanical properties declination and security risk. This paper considers embedding the fiber Bragg grating sensor (FBG) in carbon fiber composite laminates to monitor the RTM molding process and the impact response of CFRP plate under low-energy impact. Experimental results show that FBG can effectively monitor the temperature and strain variation during the molding process, and reflects the presence of residual strain. The strain variation and internal injuries within the composite can be monitored at low energy impact conditions. This work help to build a basis for low-energy impact damage.

Key words: composite materials, fiber bragg grating, RTM molding, cure, low-energy impact

CLC Number: