https://popups.uliege.be/esaform21/index.php?id=3341 Index terms fr 0 https://popups.uliege.be/esaform21/index.php?id=3749 In recent years, polymeric materials are being used at an increasing rate in the biomedical industry. In particular, Ultra-High-Molecular Weight Polyethylene (UHMWPE), a thermoplastic polymer characterized by high toughness, good chemical stability and self-lubricating properties, is an ideal candidate for the manufacture of bearing implants used in hip or knee replacements. Nevertheless, it is difficult to achieve a good level of surface finish when turning it, because of its high instability at increasing temperature. In the present study, cryogenic machining was applied instead of dry cutting to machine a biomedical grade UHMWPE at different cutting speeds. The surface finish was assessed in terms of surface roughness, crystallinity degree and hardness in correspondence of the surface. To correlate machinability results with the UHMWPE mechanical behaviour, uniaxial tensile tests were performed in a wide range of temperatures. The obtained results showed that the application of cryogenic machining was an efficient mean to increase the surface finish: in fact, smoother and harder surfaces were obtained regardless of the adopted cutting parameters. Mon, 29 Mar 2021 14:24:30 +0200 Mon, 12 Apr 2021 11:27:39 +0200 https://popups.uliege.be/esaform21/index.php?id=3749 https://popups.uliege.be/esaform21/index.php?id=3340 The objective of the present work is to study materials properties and performance of the footwear thread to develop and implement an analytical-numerical model capable of simulating their performance. The numerical results simulation was carried out, analyzing the sliding mechanisms of shoe-floor and evaluating the contact pressure and vertical stress. An experimental procedure, supported by a numerical model, was implemented for computing the evolution of the tangential force over several load increments. Sun, 28 Mar 2021 10:19:19 +0200 Sun, 28 Mar 2021 10:19:27 +0200 https://popups.uliege.be/esaform21/index.php?id=3340