Efficient Toughening of Short-Fiber Composites Using Weak Magnetic Fields.

ABSTRACT: Short fibers may serve as toughening agents of composite materials because of the high energy dissipated during fracture, associated with numerous fiber pullouts. An ongoing challenge is to improve their toughness even further, by directing and concentrating fibers near highly stressed structural regions. Weak magnetic fields are utilized to increase the fracture toughness of an epoxy matrix reinforced by short magnetized glass fibers by directing and concentrating fibers near highly stressed structural regions. The orientation and local concentration of the fibers are controlled by the vector components of the magnetic field, and by the gradient in field intensity, respectively. Optimized fracture toughness was achieved by using two pairs of permanent magnets, combining enhanced concentra

SUBMITTER: Goldberg O 

PROVIDER: S-EPMC7288324 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature