Failure Characterization of Flax/Epoxy Composite Materials with Filler Under Acoustic Wave
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Abstract
Researches on bio-composites are increased due to their environment friendly. Some research shows a good improvement in their mechanical property with the polymer/synthetic composites. In this paper, the damage characterization of flax epoxy composite with alumina powder as filler under acoustic emission at various stages are studied. For this work, the alumina powder with various percentages such as 3% and 5% are chosen. In this project, tensile and flexural tests are performed. From the tensile test peak load and strain functions are calculated. Acoustic emission is non-destructive technique used to find the damage mode. AE has the advantage over other method due to its high sensitivity. The three-point bending is performed on the filler infused flax/epoxy composite to evaluate the flexural damage at various percentage of filler composition. The damage characterization is studied based on the frequency obtained over the time. These failure modes such as delamination, matrix cracking fibre damage are associated with frequencies are evaluated using standard mode of damage. Duration (μs) vs. amplitude (dB) and force (N) vs. position (mm) curves are plotted to evaluate the damage. The real time various damage levels occurs during flexural loading and it was evaluated using AE techniques.
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