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A preliminary evaluation of matricaria maritimum fibres for polymer reinforcement ArchiMer
Davies, Peter; Bourmaud, A.; Pajot, A.; Baley, C..
This short communication describes results from a preliminary characterization of the dimensions and mechanical properties of matricaria maritimum fibres. The aim is to develop a complementary industrial application of these plants, which are grown along the coast mainly for pharmaceutical use. The fibres are shown to be of small diameter, 5-10 mu m, and tubular in form. Nano-indentation on fibres and tensile tests on fibre bundles provide an indication of the mechanical behaviour of these fibres, which are similar to those of sisal (leaf fibre) and miscanthus (grass fibre), and may be interesting for reinforcement of polymer matrix composites.
Tipo: Text Palavras-chave: Natural fibre; Nano-indentation; Tensile properties.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00042/15369/12790.pdf
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Development of the correction procedure for High Volume Instrument elongation measurement. Repositório Alice
McCORMICK, K. M.; MORAIS, J. P. S.; HEQUET, E.; KELLY, B..
Cotton spinning mills need high-quality fibers to maintain their manufacturing efficiency. Machinery throughput is increasing and it could translate into more processes with higher breaking stress. Consequently, more fibers are susceptible to breaking or damage. To face this problem, breeders must develop new varieties whose fibers can better withstand this mechanical stress. The main tool utilized in cotton breeding programs is the High Volume Instrument (HVI), which reports in a short time measurements such as micronaire, length, color, and strength. This instrument can also determine fiber elongation, but there is no current correction method for it. Both elongation and strength factor into the work-to-break of fibers, which plays a direct role in fiber...
Tipo: Artigo de periódico Palavras-chave: Tensile properties; Stelometer; Elongation; Calibration; Cotton; Breeding.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1118662
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Finite element simulation of the mechanical behaviour of synthetic braided ropes and validation on a tensile test ArchiMer
Vu, Thanh Do; Durville, Damien; Davies, Peter.
A finite element approach to the mechanical behaviour of braided ropes at the scale of their internal components is proposed in this paper. The ropes considered are composed of a few tens of textile yarns, twisted into strands, which are then braided together. The approach aims at determining the mechanical equilibrium of such structures, viewed as assemblies of yarns undergoing large displacements and developing contact-friction interactions. To solve this equilibrium within a quasi-static framework, and using an implicit solution scheme, each yarn of the rope is represented by a finite strain beam model, and special emphasis is put on the detection and modelling of contact-friction interactions between yarns. The approach is used first to determine the...
Tipo: Text Palavras-chave: Braided rope; Finite element simulation; Contact-friction; Textile structures; Tensile properties.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00245/35647/34160.pdf
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