Thermal strain effects in thermoplastic satin weave composite laminates

In this research, thermoplastic carbon-PPS woven fabrics are subjected to temperature cycles from -20 °C till 160 °C. All samples have embedded fibre Bragg gratings in the symmetryplane of the laminates. It will be shown that heating above the Tg reverses more or less the thermal residual strains and that after cool-down the spectral response of the fibre Bragg gratings has changed, proving the annealing effect. Although macroscopically the two different lay-ups are identical, the results show that thermal strain in the symmetry plane is significantly influenced by the compositeU+2019s stacking sequence.

ISBN:8461697987

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