Fatigue properties and thermal analysis of short glass fibre reinforced polyamide 6.6

In recent years, micro-CT has proved to be a very effective and reliable method for assessing the fibre structure in SFRP. More recently, efforts have been made in order to apply the technique for studying the damage accumulation processes in these materials. Among other issues, the micro-CT set-up requires samples of narrow gauge section allowing to concentrate damage. The aim of the experimental characterization presented below is threefold: \u2022 a comparison of the mechanical properties of two standard geometries of PA6.6GF10, the smaller ASTM D1822 (9.6 mm2 section, constant curvature) and the ISO 527-1A (40 mm2 constant section), used in the previous works; \u2022 a collection of data during interrupted fatigue tests on the ASTM samples, for later use in the damage accumulation investigation; \u2022 a fatigue thermal analysis, possible only on ISO samples due to their larger dimensions