Search results for "COSTRUZIONE"
showing 10 items of 669 documents
LA FABBRICA DEL TEATRO MASSIMO
2013
Sommario. In queste note, esito dell’analisi diretta del monumento e dello studio delle carte originali del cantiere, si ripercorrono i principali aspetti della costruzione del teatro Massimo V.E. di Palermo, dai temi di valenza urbana a quelli più strettamente tecnici. Si esaminano le rilevanti questioni che attengono alle strutture murarie in fondazione che dovettero tenere conto delle stratificazioni storiche del sito, ma soprattutto in elevazione dove si dovettero contemperare le esigenze tecnico-statiche, di decoro e di economia. Specifica trattazione hanno le strutture metalliche negli orizzontamenti e nelle grandi coperture, con riferimenti puntuali allargati alla tumultuosa innovazi…
Il Teatro “Garibaldi” a Palermo e la costruzione dei teatri storici minori
2013
Degli oltre mille teatri italiani censiti negli anni immediatamente successivi all’Unità, a cui se ne aggiunsero molti altri edificati in seguito, ben pochi permangono a testimoniare i caratteri e la diffusione capillare del teatro all’italiana, dai pochi casi magniloquenti ai più comuni, caratterizzati spesso da connotati di provvisorietà ed occasionalità. Il teatro all’italiana, concepito come raffigurazione di uno spazio urbanistico, riproponeva - in forme e modi costruttivamente analoghi - ciò che da sempre si era realizzato nelle piazze e nei luoghi di incontro all’aperto. L’involucro perimetrale in muratura e la copertura erano realizzati secondo la tradizione costruttiva codificata; …
Architettura e tecnica nella Costruzione del Teatro Massimo V.E. di Palermo
2012
Abstract. In these notes, a result of direct analysis in the monument and through original documents of the ancient yard, we retrace the main aspects of the construction of the Theatre Massimo VE in Palermo, from urban issues to technical ones. We examine the relevant issues pertaining to foundation structures that had to take into account the historical layers of the site, but especially elevation walls where had to be balanced the technical-static, decorative and economy demands. A specific treatment is about metal structures in floors and in large covers, with specific reference enlarged to the European innovation of those tumultuous years that influenced the design choices in the theate…
Investigation of the Thermomechanical Response of Cyclically Loaded NiTi Alloys by Means of Temperature Frequency Domain Analyses
2021
Nickel–Titanium (NiTi) shape memory alloys subjected to cyclic loading exhibit reversible temperature changes whose modulation is correlated with the applied load. This reveals the presence of reversible thermomechanical heat sources activated by the applied stresses. One such source is the elastocaloric effect, accounting for the latent heat of Austenite–Martensite phase transformation. It is, however, observed that when the amplitude of cyclic loads is not sufficient to activate or further propagate this phase transformation, the material still exhibits a strong cyclic temperature modulation. The present work investigates the thermomechanical behaviour of NiTi under such low-amplitude cyc…
COSTRUIRE IN PIETRA FRA INNOVAZIONE E TRADIZIONE
2007
Il Poster illustra la ricerca sulla "pietra di Bagheria", l'antica estrazione della pietra e le cave storiche.
Terremoto e ricostruzione a Ragusa (dubrovnik) nel 1520
2009
Terremoto e ricostruzione a Ragusa nel 1520
2012
L'articolo traccia un sintetico quadro dei danni riportati dal patrimonio architettonico della repubblica di Ragusa in Dalmazia in occasione del terremoto che la colpì nel 1520, analizzando le modalità di gestione dell'emergenza e i cantieri di ricostruzione avviati dopo il sisma.
On the correlation of temperature harmonic content with energy dissipation in C45 steel samples under fatigue loading
2022
Fatigue damage onset involves a transformation of mechanical energy. This is in part spent into work of plastic deformation and fracture and in part transformed into heat. Therefore, different thermomechanical heat sources are activated during a fatigue loading cycle, resulting in a temperature modulation that can be characterized by its frequency content. Several studies have monitored the temperature on samples undergoing high-cycle fatigue, measuring specific thermomechanical metrics which could serve as indicators of damage evolution. The present work evaluates the harmonic content of temperature, to investigate its correlation with the material dissipation. The harmonic terms investiga…
Head, chest and femur injury in teenage pedestrian–SUV crash; mass influence on the speeds
2018
This work studies the teenage pedestrian–sport utility vehicle (SUV) crash; injury to the vital parts of the body, such as the head and chest, and to the femur is evaluated. More advanced injury criteria are applied, as provided in the rules. The multibody technique is applied by making use of SimWise software and of the teenager anthropomorphic model, the use of which is now consolidated. Head injury criterion (HIC) is used for the head, thoracic trauma index (TTI) criterion for the thorax in the case of side impact and 3 ms criterion in the case of frontal impact, while the force criterion is used for the femur. Both the TTI and femur load evaluation require non-substantial modifications…
Photoelastic stress analysis assisted evaluation of fracture toughness in hydrothermally aged epoxies
2014
The present work has investigated the fracture toughness of a model DGEBA epoxy system subject to Hidro-Thermal aging. A Photoelastic Stress Analysis technique has been implemented, showing the evolution of stresses arising throughout the water uptake process due to the non-uniform swelling of the material. Gravimetric and Dynamic Mechanical Thermal Analyses have further complemented the characterization, showing the onset of plasticization effects with aging. The correlation of all previous characterizations has allowed to conclude that an increase of KIC fracture toughness is obtained at the fully saturated condition. In particular Photoelasticity has also revealed the onset of relevant s…