Author:
Dunand David C.,Mortensen Andreas
Abstract
ABSTRACTA model predicting the number of prismatic loops dislocation punched at the ends of a cylindrical fiber by thermal mismatch stresses is presented and compared to another based on a mismatching ellipsoid. The longitudinal stress in the fiber and the interfacial shear stress are derived by adapting a shear-lag model to the plastic portion of the interface. In certain cases, the central part of the fiber is strained by plastic and elastic interfacial shear until it exhibits no mismatch with the matrix. This leads to a critical fiber length above which the number of punched loops is constant.
Publisher
Springer Science and Business Media LLC
Reference13 articles.
1. The determination of the elastic field of an ellipsoidal inclusion, and related problems
2. 8. Dunand D.C. , Mortensen A. , “Thermal Mismatch Dislocations Produced by Large Particles in a Strain-Hardening Matrix”, accepted in Mater. Sci. Eng. A.
3. 7. Dunand D.C. , Mortensen A. , “On Plastic Relaxation of Thermal Stresses in Reinforced Metals”accepted in Acta Metall. Mater.
4. Dislocations punched-out around a short fiber in a short fiber metal matrix composite subjected to uniform temperature change
5. Hard particles as dislocation ring sources in molybdenum