000004916 001__ 4916
000004916 005__ 20141119144604.0
000004916 04107 $$aeng
000004916 046__ $$k2002-06-02
000004916 100__ $$aXi, Yunping
000004916 24500 $$aA COMPOSITE THEORY FOR DIFFUSIVITY OF DISTRESSED MATERIALS

000004916 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004916 260__ $$bColumbia University in the City of New York
000004916 506__ $$arestricted
000004916 520__ $$2eng$$aThis paper describes a new method using composite theories to evaluate the effect of damage on diffusivity of distressed materials. Distressed materials can be considered as a two-phase composite material with the distressed elements as one phase and the original material as the other phase. Then, composite models developed for effective properties of two-phase composites can be used to evaluate the effect of damage on distressed material. The progressive damage can be characterized by the change in volume fraction of the distressed phase. As an example, the diffusivity of distressed materials is evaluated by a two-phase composite model based on generalized self-consistent theory. The methods for determining the model parameters are introduced, and the prediction of the two-phase composite model is compared with the test data. The concept of the two-phase composite theory can be further extended into general multiphase composite theory to evaluate the effect of multilevel damage on effective stiffness and transport properties of materials.

000004916 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004916 653__ $$aComposite theory, transport properties, damage mechanics, distressed materials.

000004916 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004916 720__ $$aXi, Yunping
000004916 8560_ $$ffischerc@itam.cas.cz
000004916 8564_ $$s160483$$uhttps://invenio.itam.cas.cz/record/4916/files/535.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004916 962__ $$r4594
000004916 980__ $$aPAPER