Search results for " Cost"
showing 10 items of 3966 documents
Analysis of the effects of magnetic field on the induced stress in drilled plates
2013
Abstract A drilled plate of ferromagnetic material suitably coupled by coils of enameled copper wire fed by a DC power supply to 30 V is considered in this paper. It is analyzed with finite element and later experiments are performed to validate the obtained results. After polishing the plate, two strain gauges for measuring the deformation along the x axis and along the z axis are installed. The values of strain are 5 μm/m in z direction and −2 μm/m in x direction. The experimental–numerical comparison shows that the laboratory results are lower than numerical, while signs and orders of magnitude are the same. It is concluded that the results of the FEM analysis can be considered acceptabl…
Analytical solution for the dynamic analysis of magneto-electro-elastic laminated beams
2011
Dynamic analysis of magneto-electro-elastic structures by a meshless approach
2011
Comparison of methods to model species habitat networks for decision-making in nature conservation : the case of the wildcat in southern Belgium
2020
Facing the loss of biodiversity caused by landscape fragmentation, implementation of ecological networks to connect habitats is an important biodiversity conservation issue. It is necessary to develop easily reproducible methods to identify and prioritize actions to maintain or restore ecological corridors. To date, several competing methods are used with recurrent debate on which is best and if expert-based approaches can replace data-driven models. We compared three methods: knowledge-driven (expert based), data-driven (based on species distribution model), and a mixed approach. We quantified their differences in habitat and corridor mapping, and prioritizations of landscape elements in t…
IMPIANTO DI STABILIZZAZIONE DI UNA IMBARCAZIONE A SOSTENTAMENTO ALARE
2012
Lo studio, frutto dell’attività di ricerca svolta dal DICGIM dell’Università degli Studi di Palermo in partnership con l’Engineering Department della Ustica Lines S.p.A. nell’ambito di un progetto finanziato con fondi PON Ricerca e Competitività 2007-2013, analizza preliminarmente le cause di guasto comportanti la fermata di un battello a sostentamento alare HSC per trasporto passeggeri al fine di individuare i componenti critici del mezzo. Individuato tale componente nel sistema di stabilizzazione, viene valutato l’impatto economico che il fermo del battello comporta sui costi operativi della Compagnia di navigazione. L’entità di tali costi, anche in termini di mancata utilizzazione del me…
Strengthening of masonry walls subjected to out-of-plane loads using CFRPs
2007
This paper presents an experimental investigation carried out on masonry panels subjected to axial load and bending moment in the plane of minor inertia. The masonry type consist of calcarenite ashlars and mortar joints; the reinforcement is made of Carbon Fibres Reinforced Polymer (CFRP) strips applied with the wet-lay-up system. Tests are carried out with controlled displacements. Results have been recorded at each step in terms of: horizontal force and corresponding displacements; moment and curvature at the base of the wall; strains on the CFRP strips near the base of reinforced specimens in order to observe the delamination phenomen. Comparison between the results relative to unreinfor…
EXPERIMENTAL SEISMIC ANALYSIS OF MONUMENTS FOR RISK MITIGATION
2008
An experimental investigation, at the moment in progress, for the evaluation of the seismic vulnerability of a monumental structure and the effects of some reinforcement devices are presented. Referring to this monumental structure, that is a church, the authors obtained the dynamically identified analytical model and recognized that the drum-dome system was one of the macro-elements with highest risk. This result was obtained by analyzing the linear behaviour. In order to study the nonlinear behaviour, tests on reduced scale models were necessary. The models, with and without risk mitigation reinforcements, were subjected to seismic input with rising intensity in order to know the effects …
EFFECTIVENESS OF BASALT FIBRE-REINFORCED CEMENTITIOUS SYSTEMS IN CONFINING MASONRY MEMBERS: AN EXPERIMENTAL INVESTIGATION
2020
The use of composites based on fibre-reinforced polymers (FRPs) to strengthen masonry columns has become a common practice in the last decades. FRPs, however, exhibit some shortcomings when applied to masonry substrates, due to the organic nature of their matrix. For this reason, increasing attention is paid today to composites based on fibre-reinforced cementitious matrices (FRCMs), in which the polymeric matrix is replaced with an inorganic matrix (such as cementitious mortars). Cementitious matrices guarantee higher breathability and compatibility with the substrate, less sensitivity to debonding at the interfaces, and higher resistance to fire and high temperatures. Moreover, due to the…
Failure Load and Collapse Mode of an RC Beam in a Large Collapsed Roof
2021
The present work focused on the determination of the collapse load and of the failure mode of a collapsed framed structure constructed in the South of Italy and failed in 2004 under its self-weight. Information available was the results on extensive experimental test campaign, for the determination of mechanical properties of concrete and steel bars of beams, floors and columns involved in the failure. Moreover, draws of original design with construction details and design rules valid in Italy at the time of construction were found. A simple monodimensional beam model for prediction of load-deflection curve, able to include degradation of constituent materials (concrete, steel and bond) was…
Anti-tubercolosis dispensary and sanatorium: shape, function and technology
2013
Nel panorama delle architetture nosocomiali introdotte dalla specificità dei metodi di cura otto-novecenteschi, il dispensario antitubercolare ed il sanatorio hanno un alto valore di rappresentatività ed il loro studio risulta di estremo interesse per quanti si approcciano al vasto tema dell’edilizia sanitaria e dei materiali e tecniche costruttive ad essa associati. Il proliferarsi, infatti, della tisi costrinse l’Italia a dotarsi di una specifica tipologia edilizia per debellare una malattia davvero temuta, che confluirono in scelte e connotazioni distributivo-funzionali, formali e tecnologiche specialistiche, proprio perché specifica era la patologia da trattare. Il sanatorio, infatti, d…