Concept
Yarn
Related publications (23)
Mode I interlaminar fracture of carbon epoxy laminates: Effects of ply thickness
John Botsis, Thomas Gmür, Joël Cugnoni, Guillaume Frossard
In this work, the influence of ply thickness on strain energy release rate (ERR) in delamination of carbon epoxy laminates is addressed. Specimens with three ply thicknesses: 0.030, 0.075 and 0.150 mm are tested. While the ERR at onset of crack propagation ...
Elsevier2016Probing the Strength and Fracture Toughness of Hard Second Phases at the Micron Scale
Andreas Mortensen, Marco Cantoni, Goran Zagar, Andreas Rossoll, Martin Guillermo Mueller, Václav Pejchal, Marta Fornabaio, Lionel Michelet
It is known that the mechanical properties of composite materials and alloys are influenced by the intrinsic mechanical properties of their reinforcements or second phases. It is however challenging to determine such local properties, given their small siz ...
2015Dynamic mechanical properties of epoxy/flax fibre composites
Pierre-Etienne Bourban, Fabien Duc
The mechanical and damping properties were measured for unidirectional, 0/90 and twill 2/2 flax fibre (FF) composites containing 40 vol% of fibres in an epoxy matrix. All composites were processed by resin transfer moulding. The influence of the impregnati ...
Sage Publications Ltd2014Effect of annealing and silylation on the strength of melt-spun Ni-Mn-Ga fibres and their adhesion to epoxy
Véronique Michaud, Yves Leterrier, Susanne Glock, Edgars Sparnins
Single crystals of ferromagnetic Ni-Mn-Ga shape memory alloys show magnetic-field and stress induced twinning, leading to shape memory. Adaptive composites can thus be produced by embedding single crystalline particles or bamboo-structured Ni-Mn-Ga fibres ...
2014Arrested fluid-fluid phase separation in depletion systems: Implications of the characteristic length on gel formation and rheology
We investigate the structural, dynamical, and rheological properties of colloid-polymer mixtures in a volume fraction range of φ=0.15-0.35. Our systems are density-matched, residual charges are screened, and the polymer-colloid size ratio is ∼0.37. For the ...
American Institute of Physics2010Fiber reinforced polypropylene nanocomposites
Chrystèle Houphouet-Boigny Favre
The aim of this thesis is to assess the feasibility of integrating nanoparticles into glass fiber (GF) reinforced isotactic polypropylene (iPP) composites via existing thermoplastic processing routes, and to investigate whether this results in significant ...
EPFL20073D morphology of cell cultures: a quantitative approach using micrometer synchrotron light tomography
Jeffrey Alan Hubbell, Randoald Müller
Current issues in both tissue engineering and cell biology deal with cell behavior extensively in 3D. Here, we explore synchrotron radiation micro-computed tomography as a tool for morphological characterization of such 3D cellular constructs, providing mi ...
2005Identification par recalage modal et fréquentiel des propriétés constitutives de coques en matériaux composites
Fibre-reinforced composites are being increasingly used as alternatives for conventional materials primarily because of their high strength, specific stiffness, light weight and adjustable properties. However, before using this type of material with confid ...
EPFL2005Robotic tow placement for local reinforcement of glass mat thermoplastics (GMTs)
Pierre-Etienne Bourban, Martyn Douglas Wakeman
A process has been developed where multiple yarns of commingled glass and polypropylene are heated and placed to a desired geometry. The placed unidirectional (UD) tow is then encapsulated by over-moulding with glass mat thermoplastics (GMTs). The effects ...
2002