Influence of fibre orientation, moisture absorption and repairing performance on the low-velocity impact response of woven flax/Elium® thermoplastic bio-composites
Article dans une revue avec comité de lecture
Author
Date
2023-07-17Journal
Journal of Composite MaterialsAbstract
The importance of natural reinforced bio-composite materials with desirable properties such as high modulus-to-weight ratio, good impact resistance, and the ability to be easily repaired is crucial in the industry. A woven flax/Elium® thermoplastic bio-composite is manufactured to challenge these needs. Elium® is the only resin that permits the manufacture of large parts with thermoset-like processes, as Liquid Resin Infusion presented in that work. The paper highlights the influence of stacking fibre orientation, moisture absorption, and repair aptitude on its impact resistance. An instrumented drop tower was needed to conduct low-velocity impact tests at several energies and high-speed image coupled with microscopic observations was used to assess the damage evolution. The impact resistance was improved for the dry (0/90)₆ orientation, but moisture absorption decreased its impact peak force by 20%. A three-point bending test was preferred to compression after impact for studying the residual properties after impact. The bio-composites with (±45)₆ orientation showed higher impact residual performance than the (0/90)₆ orientation, and corresponded to the reduction of maximum bending force by 20% than that of the reference. In addition, a thermo-compression process was applied to repair the impacted plates and conduct multiple impact/repair cycles which showed a significant recovery of stiffness and maximum impact force at 4J on (0/90)₆ plates, highlighting their potential for repair in the automotive and marine industries.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Conférence invitéeOne of the major challenges of composites based on a thermoplastic matrix is to fabricate finished parts both in a single processing step and reduced time production. For this purpose, a stamping airflow device is here ...
-
Conférence invitéeMechanical behavior of composite laminates depends strongly on the manufacturing process. It is necessary to use representative samples of the material, and therefore of the process. In the case of filament winding, specimens ...
-
Article dans une revue avec comité de lectureHADDAD, Mohamed; CROZATIER, Mathilde; GUILLAUMAT, Laurent; TEREKHINA, Svetlana (SAGE Publications, 2018)Sandwich structures, due to their high stiffness versus lightness ratio, are used progressively in high performance products. In order to design these structures with the most appropriate dimensions and material combinations, ...
-
Article dans une revue avec comité de lectureThe use of natural fibre reinforced composites such as flax fibre / polypropylene is in a constant expansion particularly in automotive and marine industries due to their good mechanical properties, low density and thus, ...
-
Communication avec acteDERBALI, Imed; MONTI, Arthur; EL MAHI, Abderrahim; JENDLI, Zouhaier; GUILLAUMAT, Laurent; TEREKHINA, Svetlana (EDP Sciences, 2018)One of the major challenges of thermoplastic matrix based composites is to manufacture finished parts both in one shot process and in a reduced time production. For this purpose, two techniques were developed to manufacture ...