Abstract
Mesoscopic fracture toughness of epoxy matrix phase in unidirectional Carbon Fiber Reinforced Plastics (CFRP) in Mode I loading was investigated using Double Cantilever Beam (DCB) specimens and Raman spectroscopy. Strain distribution near the crack tip in the matrix phase was experimentally measured. A PbO thin film was deposited on the measured surface of the specimen by physical vapor deposition (PVD) as the pretreatment to measure the strain by Raman spectroscopy. The mesoscopic fracture toughness of the epoxy matrix phase in CFRP was determined using the measured results. The fracture toughness of the matrix phase was also investigated using the Finite Element Method (FEM). These results coincided well with the fracture toughness of neat resin measured by Single Edge Notched Bend (SENB) testing. Macroscopic fracture toughness measured by modified compliance calibration (MCC) was twice as great as the mesoscopic fracture toughness of the epoxy matrix phase.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
