Creep testing of epoxy resin-flax fiber composites
Journal Title: Proceedings in Manufacturing Systems - Year 2017, Vol 12, Issue 1
Abstract
The present study proposes an experimental approach into determining the viscoelastic characteristics of a composite made out of an epoxy-resin matrix with long flax fiber reinforcement. In a first instance, the fabrication process will be discussed in detail, which consists of resin impregnation in the dry fiber and a thermo-compression. Afterwards, creep-recovery tests are performed at room temperature on the obtained samples in two sets of cyclic ramp loadings by varying, for the first one, the ramp load whilst keeping the creep time constant for each loading step and for the second one, a fixed load and a variable creep time. Reading of the elongation is made with the help of strain gages glued on the tested specimens for the entire duration of the experimenting session. Acoustic emission tests were performed during the creep phase for each load step in order to verify that there are no internal failures which might introduce plastic deformations. The samples are unidirectional, 0°, 90° and ±45° strips cut from the fabricated composite plates.
Authors and Affiliations
Constantin Stochioiu, Stéphane Fontaine, Horia Miron Gheorghiu
Keywords
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