Delamination behavior of carbon fiber/epoxy composite laminates with short fiber reinforcement

Journal Article · Wed Jun 01 00:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90247-X· OSTI ID:7302976

Sohn, M S; Hu, X Z ^[1]

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1. Univ. of Western Australia, Nedlands (Australia). Dept. of Mechanical and Materials Engineering

Delamination in laminated materials is one major mode of damage and failure encountered in application. Fracture mechanics is often used to characterize the interlaminar fracture behavior. The interlaminar fracture energies, G[sub I], G[sub II] and G[sub I/II] are the major concerns to characterize the interlaminar toughness of the composite laminates. Typical mode-I fracture is caused by normal tension, and typical mode-II fracture by shear in the direction of crack extension. The objective of the present study is to compare and discuss the mode-I and mode-II interlaminar fracture energies, G[sub I] and G[sub II] of carbon fiber/epoxy composite laminates with and without the reinforcement of short Kevlar fibers (5--7 mm in length) and to identify the microfracture features of the Kevlar fibers under those two delamination modes through SEM observations. Double cantilever beam (DCB) specimens and end notched flexure (ENF) specimens are used for the mode-I and -II delamination experiments.

• OSTI ID: 7302976
• Journal Information: Scripta Metallurgica et Materialia; (United States), Vol. 30:11; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON FIBERS
FAILURES
COMPOSITE MATERIALS
EPOXIDES
EXPERIMENTAL DATA
FRACTURE PROPERTIES
PLASTICS
REINFORCED MATERIALS
SCANNING ELECTRON MICROSCOPY
DATA
ELECTRON MICROSCOPY
FIBERS
INFORMATION
MATERIALS
MECHANICAL PROPERTIES
MICROSCOPY
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
SYNTHETIC MATERIALS
360603* - Materials- Properties