Evaluation of Honeycomb Composite Sandwich Structures Manufactured Using Vartm Process
In spite of numerous advantages of open-cell core sandwich composites, the applications have been limited due to the problems involved in manufacturing using low cost processes. Resin accumulation in the core is a major challenge in the fabrication of honeycomb sandwich panels using resin infusion techniques. Foam-filled cores and polymer film barriers are some of the methods used in the literature to address this issue. However, these techniques will increase the weight of the sandwich composites. In the present work, honeycomb sandwich panels were manufactured using commercially available film adhesive and modified vacuum assisted resin transfer molding (VARTM) process. The resin incursion into the core openings was investigated. No accumulation of resin was observed in the core. Flatwise tension, flatwise/edgewise compression, and three-point bending tests were conducted to evaluate the mechanical performance of the sandwich composites. The performance of sandwich panels during a low velocity impact event was also evaluated. Results indicate that the VARTM process can be successfully used to manufacture honeycomb composite sandwich structures using currently available barrier adhesive films.
V. G. Menta et al., "Evaluation of Honeycomb Composite Sandwich Structures Manufactured Using Vartm Process," International SAMPE Symposium and Exhibition, Society for the Advancement of Material and Process Engineering (SAMPE), Jan 2010.
SAMPE 2010 Conference and Exhbition
Mechanical and Aerospace Engineering
Keywords and Phrases
Barrier Adhesive; Film Adhesives; Honeycomb Composite; Honeycomb Sandwich Panels; Low Costs; Low Velocity Impact; Mechanical Performance; Open-Cell; Resin Infusion; Sandwich Composites; Sandwich Panel; Three-Point Bending Test; Vacuum-Assisted Resin Transfer Molding Process
Article - Conference proceedings
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01 Jan 2010