Catégorie
Matériau composite
Publications associées (803)
Two-dimensional quasi-static delamination in composite laminates under Mode-I and Mode-II conditions
Fiber-polymer composites consist of a polymer matrix and reinforcing fibers made of various materials. These composites exhibit exceptional properties, such as a high strength-to-weight ratio and excellent corrosion resistance, which has led to their incre ...
EPFL2024Self-catalysed frontal polymerisation enables fast and low-energy processing of fibre reinforced polymer composites
Véronique Michaud, Jacobus Gerardus Rudolph Staal, Baris Çaglar
Frontal polymerisation has the potential to bring unprecedented reductions in energy demand and process time to produce fibre reinforced polymer composites. Production of epoxy-based fibre reinforced polymer parts with high fibre volume content, commonly e ...
2024On the influence of flow-front orientation on stringer stiffened composite panels in water impacts
Water impacts form the critical load case for high-performance carbon fibre reinforced polymer (CFRP) racing craft. Such events produce a peaked, non-uniform pressure distribution that travels along a hull panel as it is immersed. Current design standards ...
2024Highly anisotropic carbon fiber electrodes for DEAs and their dynamic non-monotonic conductive properties
Yves Perriard, Stefania Maria Aliki Konstantinidi, Markus Koenigsdorff
A common method for creating compliant electrodes for dielectric elastomer actuators (DEAs) and soft sensors is to incorporate electrically conductive carbon particles into a polymer matrix. However, using unidirectional aligned carbon fibers instead not o ...
Society of Photo-Optical Instrumentation Engineers (SPIE)2024Numerical investigation of two-dimensional Mode-II delamination in composite laminates
Thomas Keller, Anastasios Vassilopoulos, Congzhe Wang
Existing standards for delamination tests on composite materials typically employ one-dimensional (1D) beam specimens. However, such specimens may not represent real delamination scenarios in composite structures, where cracks tend to propagate in two dime ...
London2024Experimental characterization and stochastic models for time-dependent rupture of thin-ply composite laminates
Thin-laminate composites with thicknesses below 200 mu m hold significant promise for future, larger, and lighter deployable structures. This paper presents a study of the time-dependent failure behavior of thin carbon-fiber laminates under bending, focusi ...
2024Aqueous Dispersion of Aramid Nanofibers Achieved by Using Tannic Acid for Ultrahigh Strength Films
Polymer nanofibers have established a robust foundation and possess immense potential in various emerging fields such as sensors and biotechnology. In this study, aqueous dispersions of aramid nanofibers (ANFs) were successfully prepared by using tannic ac ...
Amer Chemical Soc2024Flexible free-standing Fe-CoP-NAs/CC nanoarrays for high-performance full lithium-ion batteries
In this study, a flexible, free-standing Fe -doped CoP nanoarrays electrode for superior lithium -ion storage has been successfully fabricated. The electrode combines the advantages of a Fe -doping and a flexible carbon cloth (CC) support, resulting in a h ...
Academic Press Inc Elsevier Science2024Quench Detection and Temperature Measurement With Fiber Optic Sensors
Kamil Sedlák, Davide Uglietti, Christoph Müller
For the EU DEMO conductor testing, a temperature sensor based on Fiber Bragg Grating (FBG) optical fiber is studied at the EPFL Swiss Plasma Center. The SULTAN test facility has been upgraded to use fiber optic sensor for temperature monitoring and quench ...
Piscataway2024Shear and steel-fibre reinforcement for the punching resistance of flat slabs at internal and edge columns
Reinforced concrete flat slabs consist of a continuous, thin concrete plate that rests on a grid of columns. The supporting surface of the columns is very small compared to the floor plan dimensions, leading to concentrations of shear forces near the colum ...
EPFL2024