Effects of Conditioning Parameters and Test Environment on Composite Materials for Marine Applications
The generation of accurate design data for composite materials in submerged marine applications demands a time-consuming seawater-ageing process. The effect of several parameters (temperature, pressure and conditioning medium) on the weight gain characteristics and mechanical performance of water-conditioned prepreg and infused glass / epoxy laminates was investigated. The study concludes that there could be scope to accelerate the ageing process by further increasing the conditioning temperature, but that the temperature limit must be carefully set to ensure that material degradation effects are representative of those seen in normal service. It also finds for a seawater- aged [0/+45/0/-45]s glass epoxy laminate, that the effect of testing environment (air or seawater) is of no consequence with regard to the tension-fatigue performance. Avenues for further investigation are suggested, that could have other beneficial implications for future materials screening and characterisation programmes.
Authors: Matthew Dawson, Peter Davies, Paul Harper, Simon Wilkinson
Conference: SAMPE Europe Conference 2016