Abstract
AbstractIn sandwich composites, interfacial bonding between face sheets and core has to be strengthened to prevent debonding. In this work, sandwich composites with polyurethane core and glass fiber reinforced epoxy face sheets were prepared by vacuum infusion process. Chopped fibers of glass, carbon, and kevlar with length 12 mm were introduced between core and face sheets during fabrication in order to improve face‐core bonding. The influence of chopped fibers is investigated by testing flexural, compressive, shear, and fracture toughness properties of prepared specimens according to ASTM standards. Sandwich specimens with chopped glass fibers exhibited, superior interfacial bonding between the face and the core and hence improved the mechanical properties of sandwich composite. The chopped glass fiber embedded sandwich composite has an increased flexural strength of 32.77% and compressive strength of 21.43% when compared with plain sandwich composite. In addition, the shear strength and fracture toughness behavior of specimens with chopped glass fibers are superior when compared to other chopped fibers incorporated in the interfacial region. The interfacial region between skin and core was investigated using scanning electron microscopy (SEM). Chopped glass fibers in the interfacial region showed better adhesion property along with the epoxy.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.