HyFiSyn aims to train 13 early stage researchers to become interdisciplinary, multi-talented experts. The 8 universities, 5 industrial partners and 2 professional training organisations offer the researchers a unique opportunity to be trained by world-leading experts in cutting-edge technologies, where they are supported by a strong network and industry participation. The training programme strongly emphasises entrepreneurship and innovation skills to maximise the impact of the project, thereby increasing the EU’s innovation capacity.
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Understanding the mechanical response of glass and carbon fibres: stress-strain analysis and modulus determination
Rajnish Kumar, Lars P Mikkelsen, Hans Lilholt and Bo Madsen
Accurate characterization of fibres is crucial for the understanding the properties and behaviour of fibre-reinforced composite materials. Fibre properties are key parameters for composite design, modelling and analysis. In this study, characterization of mechanical properties of glass and carbon fibres has been performed using a semi-automated single-fibre testing machine. Based on a sample set of 150 glass and carbon fibers fibres, engineering and true stress-strain curves are analyzed. Different modulus determination methods are discussed based on true stress-strain and tangent modulus-strain relationships. For glass fibres, the true stress-strain based tangent modulus is found to be independent of applied strain, whereas for carbon fibres, a tendency of tangent modulus to increase with applied strain is observed. The modulus of glass fibres is found to be independent of fibre diameter, whereas carbon fibres with smaller diameter show higher modulus compared with carbon fibres with larger diameters.