1,720,999 research outputs found
Analysis of critical equipment for the implementation of a computerized maintenance management system in a manufacturing firm
No full textAlternative coffee packaging: an analysis form a life cycle point of view
No full textThe amount of municipal waste related to food packaging systems, with respect to the whole mass of municipal waste, is ever
increasing. For this reason, a selection of different packaging systems has to be made from the start of production not only to favour
food conservation, but also to reduce packaging mass and increase the use of recyclables.
This paper presents a comparison between impacts associated with alternative packaging systems on the supply of coffee, with the
aim of showing how their values change depending on the materials and processes commonly in use. To compare impacts, Life Cycle
Assessment methodology was considered. This approach, which is widespread use in many different production sectors, is defined in
detail in the ISO 1404· norm
Influence of temperature and thickness on the off-axis behaviour of short glass fibre reinforced polyamide 6.6 - quasi-static loading
No full textThis paper investigates the anisotropic behaviour of mechanical properties of a short glass fibre reinforced polyamide 6.6 (PA66-GF35) under quasi-static loading. For this purpose tensile tests were carried out on dog-bone specimens, machined out from injection moulded plates 80 x 80 mm, of three different thicknesses t(1-3 mm) at eight different orientation angles. The tests were performed at room temperature as well as at 130 degrees C. Material elastic constants were estimated from fitting experimental tensile moduli according to the theory of elasticity for orthotropic materials. A fit on geometrical tensile strengths with the Tsai-Hill failure criterion provided instead the material strength parameters. Both specimen thickness and temperature appear to have a strong influence on mechanical properties and degree of anisotropy
Analisi statistica multivariata applicata al controllo di un processo di depurazione biologica
No full textProposta di un modello operativo di pianificazione a capacità finita con possibile ricorso a lavorazioni esterne
No full text
E-business nella realizzazione di impianti industriali: modelli per la logistica integrata
No full textFatigue strength assessment of a short fibre-reinforced plastic based on the energy dissipation
No full textAn energy-based approach is proposed for
fatigue analysis of specimens weakened by rounded
notches. The energy dissipated as heat by a unit
volume of material per cycle is assumed as fatigue
damage indicator. A theoretical model based on the
energy balance is presented, where the different
forms of energy exchanged in a fatigue test are
involved. An experimental technique which enables
one to estimate the proposed energy parameter is
presented and applied to the analysis of the fatigue
behaviour of a short fibre-reinforced plastic. The
limits of applicability of the presented approach is
also discussed
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