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Kliem, Mathias
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Publications (5/5 displayed)
- 2018Damping properties of non-conductive composite materials for applications in power transmission pylonscitations
- 2018Mitigation of conductor line galloping by a direct cable-connection to non-conductive composite power pylonscitations
- 2017Characterization of clay-modified thermoset polymers under various environmental conditions for the use in high-voltage power pylonscitations
- 2016Characterization of Fibre-Direction Dependent Damping of Glass-Fibre Composites at Low Temperatures and Low Frequencies
- 2014Kombiniertes Sensorsystem zur ganzheitlichen Überwachung von Faserverbundstrukturen (KOMBISENS)
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document
Characterization of Fibre-Direction Dependent Damping of Glass-Fibre Composites at Low Temperatures and Low Frequencies
Abstract
This paper deals with the characterization of the fibre-direction dependent damping capability of glass fibre reinforced plastics (GFRP) to be used in electrical power transmission pylons. A fibre-direction dependent damping analysis of unidirectional (UD) GFRP samples was carried out using a Dynamic Mechanical Analysis (DMA) for five different fibre orientations (0˚ | 30˚ | 45˚ | 60˚ and 90˚) and two different matrix systems (epoxy and a vinyl ester resin). Based on the dynamic characteristics the damping performance of the various composite materials was studied at three temperatures (-10˚C, 0˚C and 10˚C) and three vibration frequencies (1 Hz, 10 Hz and 30 Hz). It was observed that the loss factor of Glass Fibre Reinforced Vinyl-Ester (GF-VE) was in general slightly higher compared to the Glass Fibre Reinforced Epoxy (GF-EP). The loss factor increased slightly with temperature, while an increase in frequency led to a decrease in the damping capability of the composite material.