000004661 001__ 4661
000004661 005__ 20141119144542.0
000004661 04107 $$aeng
000004661 046__ $$k2002-06-02
000004661 100__ $$aPyrz, Ryszard
000004661 24500 $$aINVERSE PROBLEM IN RECONSTRUCTING MIKROSTRUCTURE OF UNIDIRECTIONAL COMPOSITE MATERIALS

000004661 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004661 260__ $$bColumbia University in the City of New York
000004661 506__ $$arestricted
000004661 520__ $$2eng$$aIn the present paper the simulated annealing procedure is used to reconstruct the positions of continuous fibres as observed on transverse cross sections of a composite. The modified concept of a pair correlation function is used to define the objective function, which is identified as a sum of squared differences of nodal points of integral correlation function for a reference and optimized pattern. The optimization process is subject to two constraints. The geometrical constraint of topological entropy introduces a measure of arbitrariness of the polygonal tessellation associated with the point pattern of fibre centres. The second constraint is related to maximal radial stresses calculated at the fibres interfaces. This constraint is expressed in terms of angular positions and distances from the reference fibre to its nearest neighbours. Thus the screening effect and local interactions are taken into account. The results show that reconstructed families of the fibres dispersion resemble the reference pattern and therefore can be used for a further analysis to describe overall properties of the underlying composite material.

000004661 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004661 653__ $$aComposite materials, microstructure, reconstruction

000004661 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004661 720__ $$aPyrz, Ryszard$$iBochenek, Bogdan
000004661 8560_ $$ffischerc@itam.cas.cz
000004661 8564_ $$s328921$$uhttp://invenio.itam.cas.cz/record/4661/files/127.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004661 962__ $$r4594
000004661 980__ $$aPAPER