A novel method for computerised estimation of the aspect ratio distribution and various cross-sectional geometrical properties of fibres in short-fibre reinforced composites is proposed. The method, based on X-ray micro-computed tomography, is non-destructive and does not require user intervention. Based on results on specially fabricated model material, the accuracy and precision of the method seems adequate. The method is applied in analysing a manufacturing process of wood fibre reinforced thermoplastic composite. The results indicate a significant decrease of the aspect ratio of fibres during the processing steps. Finally, the feasibility of the method is assessed by estimating parameters of a micromechanical model for flax fibre composites and comparing the results with those from tensile tests.
|Journal||Composites Part A: Applied Science and Manufacturing|
|Publication status||Published - 2015|
|MoE publication type||A1 Journal article-refereed|
- non-destructive testing
- statistical properties
- x-ray tomography
Miettinen, A., Ojala, A., Wikström, L., Joffe, R., Madsen, B., Nättinen, K., & Kataja, M. (2015). Non-destructive automatic determination of aspect ratio and cross-sectional properties of fibres. Composites Part A: Applied Science and Manufacturing, 77, 188-194. https://doi.org/10.1016/j.compositesa.2015.07.005