Study of plant fibre composites with damage induced by laser and mechanical impacts
Article dans une revue avec comité de lecture
Polymer composite materials provide good strength to weight ratio and tailored mechanical properties thanks to the reinforcing fibres. Until recently, the need for taking into account the whole life cycle of a composite structure was neglected and only the service aspects were important. Today, the designers of a new composite structure have to take into account the environmental aspects from the sustainability of raw materials to the management of end life products. There are recycling issues related to the most popular composites. A solution for the recycling issue can be sought in green composites with reinforcing fibre originating from plants. The behaviour of eco-composites, when subjected to laser or mechanical impact loadings, is not well known yet. Short fibre composites were made with spruce fibres. Another set of samples was made of flax fibres. Also a woven hemp fabric-based eco-composite was investigated. A fully synthetic woven composite was used for comparison with green composites. Mechanical impacts were performed by means of a falling dart impact testing machine. Laser impacts were made with high power laser source. Four assessment techniques were employed in order to analyse and compare impact damage. Damage detection thresholds for each material and technique were obtained.
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Article dans une revue avec comité de lectureMALINOWSKI, Paweł H.; VASCONCELLOS, Davi Silva De; TOUCHARD, Fabienne; OSTACHOWICZ, Wiesław M.; BERTHE, Laurent; GONZALEZ, Pedro Pascual; CHOCINSKI-ARNAULT, Laurence (Elsevier, 2018)Polymer composite materials provide good strength to weight ratio and tailored mechanical properties thanks to the reinforcing fibres. Until recently, the need for taking into account the whole life cycle of a composite ...
Article dans une revue avec comité de lectureESCAULT, Romain; BOUSTIE, Michel; TOUCHARD, Fabienne; PONS, Frédéric; BERTHE, Laurent; CHOCINSKI-ARNAULT, Laurence; EHRHART, Bastien; BOCKENHEIMER, Clemens (Elsevier, 2013)A laser shock wave technique has been used to study the damage tolerance of T800/M21 CFRP (Carbon Fiber Reinforced Polymer) composite material with different lay_ups. Different levels of damage have been created according ...
Article dans une revue avec comité de lectureTOUCHARD, Fabienne; BERTHE, Laurent; MALINOWSKI, Paweł H; OPOKA, Szymon; BOUSTIE, Michel; CHOCINSKI-ARNAULT, Laurence; OSTACHOWICZ, Wiesław M. (EDP Sciences, 2015)The high strain rate behaviour of the eco-composites, when submitted to laser impact loading, is not well known yet. Crucial questions are still open: influence of plant fiber length and distribution on the composite impact ...
Development of a laser shock adhesion test for the assessment of weak adhesive bonded CFRP structures Article dans une revue avec comité de lectureEHRHART, Bastien; ECAULT, Romain; TOUCHARD, Fabienne; BOUSTIE, Michel; BERTHE, Laurent; BOCKENHEIMER, Clemens; VALESKE, Bernd (Elsevier, 2014)Adhesive bondin,g bas a great poœnlial far future ligbtweight bigb-loaded structures in the a.eronautic industiy. A preœquisite for sucb an application is dtat the bond quality of the adhesive joint can be assessed in a ...
Observation of the shock wave propagation induced by a high-power laser irradiation into an epoxy material Article dans une revue avec comité de lectureESCAULT, Romain; BERTHE, Laurent; BOUSTIE, Michel; TOUCHARD, Fabienne; LESCOUTE, Emilien; SOLLIER, Arnaud; MERCIER, Patrick; BERNIER, Jacky (IOP Publishing, 2014)The propagation of laser-induced shock waves in a transparent epoxy sample is investigated by optical shadowgraphy. The shock waves are generated by a focused laser (3 ns pulse duration—1.2 to 3.4TWcm−2) producing pressure ...