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Experimental investigations and material modelling of curing processes under small deformations
Author(s) -
Yagimli B.,
Lion A.
Publication year - 2011
Publication title -
zamm ‐ journal of applied mathematics and mechanics / zeitschrift für angewandte mathematik und mechanik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.449
H-Index - 51
eISSN - 1521-4001
pISSN - 0044-2267
DOI - 10.1002/zamm.201000096
Subject(s) - epoxy , curing (chemistry) , materials science , viscoelasticity , shrinkage , composite material , rheometer , differential scanning calorimetry , stiffness , material properties , thermodynamics , rheology , physics
There are many applications of curing epoxy resins. The paste‐like material can be applied to joint two structural parts of different materials. The curing reaction in the epoxy resin increases the stiffness of the material to fix the connected partners. Furthermore, the curing epoxy resin shrinks and the reaction generates exothermal energy. In order to characterise the exothermal reaction, experimental results of dynamic scanning calorimetry are presented. The change in the viscoelastic behaviour is measured with the rheometer AR‐G2 of TA‐Instruments. In addition, investigations of the shrinkage behaviour are presented. Based on the observed changes during the curing reaction a thermodynamic consistent material model for small deformations is introduced and the parameters of the material model are identified to reproduce the experimental data.