Strength-based and fracture-based approaches in the analysis of fiber debonding

Technical Report · Mon Dec 31 04:00:00 EST 1990

OSTI ID:104209

Leung, C K; Li, V C

The debonding behavior of fibers strongly affects the properties of fiber-reinforced composites. In the literature, two different approaches to the fiber debonding problem have been developed. In strength-based approaches, interfacial debonding is assumed to occur once an interfacial strength is reached. In fracture-based approaches, the debonded interfacial zone is regarded as a tunnel crack which grows in size once an interfacial toughness is overcome at the crack tip. In this communication, the conditions for validity of these two different approaches will be discussed with respect to different possible stress distributions along the interface. A method to determine which approach is appropriate for a given composite system will be suggested.

• Research Organization: Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Civil Engineering
• OSTI ID: 104209
• Report Number(s): AD-A--291791/2/XAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADHESION
CRACK PROPAGATION
FAILURES
FIBERS
INTERFACES
MECHANICAL PROPERTIES
REINFORCED MATERIALS