Publications de Christian Fischer

Carbon outclasses wood in racket paddles: Ratings of expert and intermediate tennis players

Véronique Michaud, Christian Fischer, Michael Herzog, Olaf Blanke

Wooden racket paddles were modified with rubber and carbon fibre laminates and their differences tested in terms of flexural, damping, and coefficient of restitution properties. Four rackets types were designed: a wood reference, wood with rubber, carbon f ...

Taylor & Francis2010

Structural damping of model sandwich structures using tailored shear thickening fluid compositions

Véronique Michaud, Christian Fischer

Shear thickening fluids (STF) demonstrate the ability to simultaneously stiffen and increase their damping capacity above a critical shear strain, which depends on the particle concentration and aspect ratio in the STF. The present work considers two types ...

Institute of Physics2010

Structures with adaptive stiffness and damping integrating shear thickening fluids

Pierre-Etienne Bourban, John Christopher Plummer, Véronique Michaud, Christian Fischer, Sébastien Lavanchy, Razvan Cristian Neagu

The invention relates in particular to a method to process composite structures with tailored stiffness and damping performance incorporating a smart material, namely a shear thickening fluid (STF), preferably at the interface between two elements belongin ...

2009

Micromechanics of composites with integrated shear thickening fluids

Pierre-Etienne Bourban, Christian Fischer, Razvan Cristian Neagu

2008

Adaptive composite structures for tailored human-materials interaction

Christian Fischer

Controlling the static and dynamic properties of sports equipment has since long been of great concern in the sports engineering industry. More recently there has been interest in better understanding and improving the interplay between such properties and ...

EPFL2007

Pre- and Post-Transition Behavior of Shear Thickening Fluids in oscillating Shear

Pierre-Etienne Bourban, John Christopher Plummer, Véronique Michaud, Christian Fischer

The dynamic shear-thickening behavior of concentrated colloidal suspensions of fumed silica in polypropylene glycol has been investigated. Dynamic frequency sweeps showed that, for any given solids concentration, the complex viscosity at different imposed ...

Springer-Verlag2007

Shear thickening fluids as a tunable damping element: experimental results and modelling

Pierre-Etienne Bourban, John Christopher Plummer, Véronique Michaud, Christian Fischer

2007

What static and dynamic properties should slalom skis possess? Judgments by advanced and expert skiers

Pierre-Etienne Bourban, Christian Fischer, Michael Herzog, Olaf Blanke

Flexural and torsional rigidity are important properties of skis. However, the flexural and torsional rigidity that lead to optimal performance remain to be established. In the present study, four pairs of slalom skis that differed in flexural and torsiona ...

Taylor & Francis2007

Pre- and Post-Transition Behavior of Shear Thickening Fluids and their Integration into Sandwich Structures

Pierre-Etienne Bourban, John Christopher Plummer, Véronique Michaud, Christian Fischer

2006

Dynamic Properties of Materials for Alpine Skis

Pierre-Etienne Bourban, John Christopher Plummer, Véronique Michaud, Christian Fischer, Etienne Combaz

The aim of the present research has been to quantify the influence of different materials on the global dynamic response of a ski. The properties of the individual constituent materials were characterized as a function of temperature and frequency using dy ...

Springer2006

Dynamic properties of sandwich structures with integrated shear-thickening fluids

Pierre-Etienne Bourban, John Christopher Plummer, Véronique Michaud, Christian Fischer, Sylvia Aviva Braun

The integration of shear-thickening fluids (STFs) into composite structures has been investigated with the aim of tuning part stiffness and damping capacity under dynamic deformation. Results from oscillatory rheological measurements for a STF based on con ...

2006

Functional composite materials for improved feel and control

Pierre-Etienne Bourban, John Christopher Plummer, Véronique Michaud, Christian Fischer

2006