Energy absorption in crushing fiber-composite materials
Thesis/Dissertation
·
OSTI ID:7201575
Fiber-composite rod specimens with continuous E-glass fibers along the rod axis were crushed. Contributions of the various energy-dissipation processes to the total energy absorption are examined. Energy-dissipation processes examined included the conversion of elastic energy to sound, the fracture surface energy from fibers, matrix and the interface between them, the plastic-deformation energy, and the frictional energy. Estimates showed that the plastic deformation of the matrix and the frictional energy were the major energy-dissipating processes, each accounting for about 40 to 50% of the total energy absorption. The volume-specific energy absorption was found to increase with fiber content, fiber diameter, matrix compressive strength, and crush rate. A general damage-zone configuration was found in all crushed-fiber-composite rod specimens. It consisted of a core region featuring bands of broken fibers and a splayed-fiber region outside the core region featuring bent fibers. The general configuration was independent of trigger geometry, matrix compressive strength, and the fiber surface treatment.
- Research Organization:
- Michigan Univ., Ann Arbor, MI (United States)
- OSTI ID:
- 7201575
- Country of Publication:
- United States
- Language:
- English
Similar Records
The crush behavior of fiber composite rods with a toughened matrix
The crust behavior of fiber composite rods with a vinyl ester resin matrix
Analytical and experimental studies of crushing behavior in composite laminates
Conference
·
Tue Dec 30 23:00:00 EST 1997
·
OSTI ID:577588
The crust behavior of fiber composite rods with a vinyl ester resin matrix
Conference
·
Tue Dec 30 23:00:00 EST 1997
·
OSTI ID:577590
Analytical and experimental studies of crushing behavior in composite laminates
Journal Article
·
Tue Oct 31 23:00:00 EST 1995
· Journal of Composite Materials
·
OSTI ID:117662