In-situ neutron diffraction characterisation of a niti-fibre reinforced shape active composite

摘要

This paper addresses the shape active smart composite system consisting of a NiTi continuos fibre reinforced composite based on an aluminium matrix. We have successfully manufactured a shape active composite system with quite unusual macroscopicproperties. Through a thermomechanical process we induce both a forward and reverse phase transformation in the embedded fibres. We specifically focus on the utilisation of neutron diffraction for the monitoring of the on-going internal phasetransformation in the composite, and successfully correlate the phase transformation with observable macroscopic measures of thermo mechanical deformation.