Autori: Goanță, V., Hadăr, A., Leițoiu, B.

Editorial: Mat. Plast., 47 (4), p.450-456, 2010.

Rezumat:

Fiber-reinforced polymeric composite materials present an orthotropic distribution of their mechanical and
elastic characteristics. This behaviour is mainly due to the fact that the fabric used behaves differently under
the same type of stress, on different directions. The procedure described by our paper enables researchers to
determine the elastic modulus of such materials, on three different directions, using a specially designed
specimen. The finite element analysis revealed that there were no significant influences on the strains and
deformations existing in the measurement area, concerning the shape of the test specimen or its fastening.
The results obtained for three composite materials used to validate the procedure showed that two of the
materials having orthotropic properties, exhibit different elastic modulus.

Cuvinte cheie: polymeric composite, deformations, octagonal specimen, orthotropy, elastic characteristics