Sala Benjamin

• Phd
• Post-doctor at Franche-Comté Électronique Mécanique Thermique et Optique - Sciences et Technologies

This work describes a new class of sandwich panels made of hemp fibre composites and eco-friendly core materials (balsa, paper honeycomb and recycled polyethylene terephthalate foam). The biobased panels are designed to replace analogous glass fibre mat solutions widespread in the automotive sector. Compared to their fossil benchmarks, these panels...

Various papers in the open source literature have shown that the tensile properties of plant fibres are very scattered. To date, this difference has been viewed as an obstacle to the use of biobased composites in structural applications. However, this question of dispersion has yet not been extensively addressed at the composite scale. Therefore, t...

The development of sustainable sandwich materials is needed in the transportation sector to address environmental concerns related to the production and operation of vehicles. In addition to biobased composite skins, alternatives to classic synthetic core materials must be found to reduce the ecological footprint of whole sandwich-structured compos...

Today, plant fibre reinforced composites represent an alternative to traditional glass fibre composites in the design of high performance and environmentally friendly structures. However, these biobased materials are for the moment mainly limited to nonstructural uses due to the lack of knowledge on their long-term behaviour, in particular under va...

This paper investigates the influence of the stress level and hygrothermal conditions on the creep/recovery behaviour of three high-grade composites made of GreenPoxy and flax and hemp fibres. The results show that the levels of instantaneous, time-delayed and residual strains increase with the applied load and the severity of the environment. The...

This study focuses on the development and mechanical testing of a quasi-unidirectional woven hemp fabric for composite applications. The fabric is designed to combine the advantages of easy handling, impregnability by resin and fiber alignment. In this sense, low twisted rovings, low crimping characteristics and a high roving density in the main di...

Pour réduire leur empreinte environnementale, les industriels recherchent des matériaux renouvelables pouvant se substituer aux solutions pétrosourcées. De par leur faible densité et leurs propriétés mécaniques élevées, l'intérêt pour les matériaux composites à fibres végétales se fait grandissant. Cependant, le manque de données concernant le comp...

La recherche de matériaux ayant une empreinte écologique plus faible et pouvant être utilisés dans des applications structurales fait grandir l’intérêt des industriels envers les composites à fibres végétales. Ces nouveaux matériaux représentent une alternative aux solutions pétrosourcées. Les composites à structures sandwiches, permettant d’allier...