Year: 2019
Type: article
Abstract: Quasi static flexural and fracture tests are conducted on anhydride rich epoxy system reinforced with three different sizes of milled glass fibers, 1/32”, 1/8” and 1/4”. The matrix is prepared by mixing DGEBA resin and MTHPA hardener in equal ratio by weight whereas the 16 μm diameter slender fillers are reinforced at 3% volume fraction. It is observed that the flexural modulus and fracture toughness increase monotonically with increase in the slender filler size whereas the flexural strength of composites decreases with increasing filler lengths. The largest fillers enhance the flexural modulus and fracture toughness of neat epoxy system by ~ 1.3 and ~ 3 times, respectively. It is suggested that in the presence of large slender fillers, fiber fracture is the dominant toughening mechanism whereas the smaller size fibers are subjected to pull-out in the fracture process
Source: Procedia Structural Integrity
Authors: M.K. Singh, R. Kitey
Institution: Indian Institute of Technology Kanpur
Language: English
Topic: Epoxy Resin Curing Processes
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2950414656