Andy R. Harland

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Localized changes in the density of water induced by the presence of an acoustic field cause perturbations in the localized refractive index. This relationship has given rise to a number of nonperturbing optical metrology techniques for recording measurement parameters from underwater acoustic fields. A method that has been recently developed involves the(More)
A dynamic finite element model of a shod footstrike was developed and driven with six degree of freedom kinematic boundary conditions calculated from a motion capture running trial. Linear tetrahedral elements were used to mesh the midsole and outsole of the footwear with material models determined from appropriate mechanical tests. The model was validated(More)
A dynamic finite element model of a shod running footstrike was developed and driven with 6 degree of freedom foot segment kinematics determined from a motion capture running trial. Quadratic tetrahedral elements were used to mesh the footwear components with material models determined from appropriate mechanical tests. Model outputs were compared with(More)
This paper investigates the geometry and surface finish of channels machined into polydimethylsiloxane using a continuous wave CO2 laser. In order to investigate the various mechanisms, that could affect the channel geometry, both the laser power and trace speed were varied in conjunction with the use of a fixed focal size to allow comparison between(More)
zustellen, der bei der Prolaetingruppe fehlte. Ein ~hnliches Bfld ergab die Aufzeichnung der Hydroxybutyrat-Konzentrat ion im Blur. Auch hier steigt die Konzentration naeh Gabe yon Wachstumshormou an, w~hrend nach Prolactin und physiologischer KochsalzlSsung ein weitaus geringerer Anstieg zu verzeiehnen ist. Die statistische Analyse dieser Ergebnisse zeigt,(More)
Despite the possibilities offered by new approaches in design and advances in materials and manufacturing methods, few items of Personal Protective Equipment (PPE) used in sport have seen significant change for many decades. A major reason for this is the tradition and conservative attitudes associated with many sports, although the absence of appropriate(More)
Fabric-reinforced polymer composites used in various applications can be subjected to dynamic loading such as impacts causing bending deformations. Under such loading scenarios, composite structures demonstrate multiple modes of damage and fracture if compared with more traditional, macroscopically homogeneous, structural materials such as metals and(More)
Three-dimensional kinematic data of bat and ball were recorded for 239 individual shots performed by twenty batsmen ranging from club to international standard. The impact location of the ball on the bat face was determined and assessed against the resultant instantaneous post-impact ball speed and measures of post-impact bat torsion and ball direction.(More)
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