Reference : A pendulum test as a tool to evaluate viscous friction parameters in the equine fetlock ...
Scientific journals : Article
Life sciences : Veterinary medicine & animal health
http://hdl.handle.net/2268/95982
A pendulum test as a tool to evaluate viscous friction parameters in the equine fetlock joint
English
Noble, Prisca [Université de Liège - ULg > Département de morphologie et pathologie > Anatomie >]
Lumay, Geoffroy mailto [Université de Liège - ULg > Département de physique > Physique statistique >]
Coninx, Marc mailto [Université de Liège - ULg > > Clinique des grands animaux (chirurgie) >]
Collin, Bernard [> >]
Magnée, Adrien mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Département d'aérospatiale et mécanique >]
Lecomte-Beckers, Jacqueline mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Science des matériaux métalliques >]
Denoix [> >]
Serteyn, Didier mailto [Université de Liège - ULg > Département clinique des animaux de compagnie et des équidés > Anesthésiologie gén. et pathologie chirurg. des grds animaux >]
May-2011
Veterinary Journal
Elsevier
188
2
204-209
Yes (verified by ORBi)
International
1090-0233
[en] Equine articular cartilage ; Viscous damping coefficient ; Friction coefficient ; Lubrication ; Pendulum test
[en] An equine fetlock joint pendulum test was studied and the influence of post mortem time and intra-articular lipid solvent on the viscous frictional response examined. Fresh equine digits (group 1, n=6 controls; group 2, n=6 lipid solvent) were mounted on a pendulum tribometer. Assuming that pendular joint damping could be modelled by a harmonic oscillator fluid damping (HOFD), damping time (τ), viscous damping coefficient (c) and friction coefficient (μ) were monitored for 5h under experimental conditions (400N; 20°C). In all experiments, pendular joint damping was found to follow an exponential decay function (R(2)=0.99714), which confirmed that joint damping was fluid. The evolution of τ, c and μ was found to be significantly (P<0.05) different in the two groups, with a decrease in τ and an increase in c and μ that was faster and more prominent in digits from group 2. It was concluded that pendular joint damping could be modelled by a HOFD model. The influence of post mortem time on results suggested that, ideally, joint mechanical properties should only be tested on fresh cadavers at the same post mortem time. Moreover, the addition of lipid solvent was found to be responsible for upper viscous friction parameters and for a reduced damping time, which suggested that articular lubricating ability was compromised. This equine pendulum test could be used to test the efficacy of various bio-lubricant treatments.
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/2268/95982

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