Conference paper · Journal article
Understanding the mechanical response of glass and carbon fibres: stress-strain analysis and modulus determination
Department of Wind Energy, Technical University of Denmark1
Composites Analysis and Mechanics, Wind Energy Materials and Components Division, Department of Wind Energy, Technical University of Denmark2
Villum Center for Advanced Structural and Material Testing, Centers, Technical University of Denmark3
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.
| Language: | English |
|---|---|
| Year: | 2020 |
| Pages: | 012033 |
| Proceedings: | 41st Risø International Symposium on Materials Science |
| ISSN: | 1757899x and 17578981 |
| Types: | Conference paper and Journal article |
| DOI: | 10.1088/1757-899X/942/1/012033 |
| ORCIDs: | Kumar, Rajnish , Mikkelsen, Lars P. and Madsen, Bo |
