Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Experimental evaluation of the Acoustic Emission Technique applied to cotton fiber composite material
Submission Author:
Felipe Eloy , MG
Co-Authors:
Felipe Eloy, Antonio Ancelotti, Sebastião Simoes Cunha Jr, Anael Pereira Filho
Presenter: Felipe Eloy
doi://10.26678/ABCM.COBEM2017.COB17-0743
Abstract
Composites manufactured from natural fibres has gained special attention, since they can present good mechanical properties and can be discarded without polluting the environment, so the availability of their structural employment need to be studied. The objective of this work is to apply the Acoustic Emission (AE) Technique to a cotton fibre composite material in order to identify the fracture modes by means of the parameters obtained by this technique. Samples of this composite at three different orientation of fibre are tested: [0°]8,[±45°]2S and [90°]8 in a monotonic tensile test. Sensors of AE are coupled to samples and detect the emitted signals from the material simultaneously to the monotonic test. The elastic and mechanical properties of the composite are obtained and the AE parameters that presented more variation in function of orientation of the plies are used in the attempt of distinguish the failure mode of composite. It was observed that, for a given orientation, the AE curves for repeated samples were similar in shape but not in amplitude.
Keywords
cotton fibre composite, acoustic emission, failure modes
