Actions for Analyses of interfacial shear debonding in fiber-reinforced ceramic composites [electronic resource].

Email RIS file
Bookmark
Report an Issue

Analyses of interfacial shear debonding in fiber-reinforced ceramic composites [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1998.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
4 pages : digital, PDF file
Additional Creators
Oak Ridge National Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Free-to-read Unrestricted online access
Summary
An important toughening mechanism in fiber-reinforced ceramic composites is pullout of fibers from the matrix during matrix cracking. This relies on mode II (i.e., shear) debonding at the fiber/matrix interface which can be analyzed using either the strength-based or the energy-based criterion. In the strength-based approach, debonding occurs when the maximum interfacial shear stress induced by the applied load reaches the interfacial shear strength, τ{sub s}. In the energy-based approach, a mode II crack propagating along the interface is considered, and debonding occurs when the energy release rate due to crack propagation reaches the interface debond energy, Γ₁. Based on the above two criteria, the applied stress on the fiber to initiate debonding (i.e., the initial debond stress), σ{sub d}, can be derived. The first issue considered in the present study is the relation between τ{sub s} and Γ₁. Also, for a monolithic ceramic, the tensile strength can be related to its defect size based on the Griffith theory. A question is hence raised as to whether the initial debond stress for fiber pullout in a fiber-reinforced ceramic composite can be related to any defect at the interface.
Report Numbers
E 1.99:ornl/cp--96904
E 1.99: conf-980717--
conf-980717--
ornl/cp--96904
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
02/01/1998.
"ornl/cp--96904"
" conf-980717--"
"DE98004961"
"KC0201050"
5. international conference on composites engineering, Las Vegas, NV (United States), 5-11 Jul 1998.
Becher, P.F.; Hsueh, C.H.
Funding Information
AC05-96OR22464
View MARC record | catkey: 14450366