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For many years short fibre reinforced polymers have been commercially very attractive, mainly
because of their superior mechanical properties over corresponding polymer matrices and their low-cost
fabrication technique. Owing to their complex microstructure, especially in relation to fibre length and
orientation distributions, an understanding of strength has not been well established. The aim of the present
study is the investigation of the mechanical performance of injection moulded short glass fibre-reinforced
polyamide composites. The glass fibre content of these composites was 35% by weight. Mono axial static tests
were carried out. Specimens of the same material have been tested at different time starting form their
production in order to analyse the natural ageing of the investigated composite material. The Digital Image
Correlation (DIC) technique was applied during the tensile tests in order to obtain the stress-strain curves and
to detect the failure zone at the early stages of the tests. From the experimental investigation, it results that there
is a worsening of mechanical properties due natural aging of the test material.