Natural fibres such as flax, hemp, sisal, possess the advantages of good mechanical properties, renewability, environmental friendliness and also economical feasibility. Therefore they have been receiving more attention for the past two decades as reinforcements for polymer matrix composites [1]. Accurate and reliable measurement of the tensile strength of natural fibres by feasible technique thus becomes crucial for the comparison between different kind of natural fibres and also for the prediction of mechanical property of their composites. Single fibre tensile test (SFTT) is the most widely applied method for the measurement of the tensile properties of fibres [2-5]. While this method provides acceptable strength and modulus for synthetic fibres, it fails to provide accurate results with low standard deviation (SD) for natural fibres. In this paper, a new approach to measure the tensile properties of natural fibre was described. Flax bast fibre was used to validate the method and the results of the measurements are reported.
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