Search results for "COSTRUZIONE"
showing 10 items of 669 documents
Index-based triangulation method for efficient generation of large three-dimensional ultrasonic C-scans
2018
The demand for high-speed ultrasonic scanning of large and complex components is driven by a desire to reduce production bottlenecks during the non-destructive evaluation (NDE) of critical parts. Emerging systems (including robotic inspection) allow for the collection of large volumes of data in short time spans, compared to existing inspection systems. To maximise throughput, it is crucial that the reconstructed inspection datasets are generated and evaluated rapidly without loss of detail. This requires new data visualisation and analysis tools capable of mapping complex geometries while guaranteeing full coverage. This paper presents an entirely new approach for the visualisation of thre…
Stress Transfer within CNT Fibres: A FEA Approach
2015
Abstract Carbon nanotube (CNT) fibres are characterized by extreme anisotropy in their structure and physical properties. These fibres have been shown to have high axial strength, but poor shear strength between carbon nanotubes; for this reason it is difficult to transfer stress uniformly acrossthe fibre cross section. Here, Finite Element Analysis (FEA) is used to predict the stress distribution and the stress-strain curves of CNT fibres. The resultsdemonstrate that, in accordance with St. Venant principle,very considerable length-to-diameter ratios (> 10 3 ) are required to obtain a uniform stress distribution within the fibres even in the presence of low applied strain.
INVESTIGATION OF THE INDENTATION BEHAVIOUR OF FOAM CORED LIGHTWEIGHT COMPOSITE SANDWICHES
2011
Idee per una nuova città moderna. Concorsi di architettura a Palermo
2012
Il saggio approfondisce, nell'ambito della ricostruzione della città di Palermo, duramente colpita dai bombardamenti della seconda guerra mondiale, la folta pagina dedicata ai concorsi di architettura, banditi da enti pubblici o privati nel tentativo di risolvere il quadro globale di intere aree o di delicati, più o meno raccolti, snodi urbani. Volendo ripercorrere a grandi linee questo complesso periodo storico, occorre partire da un breve esame del piano di ricostruzione del 1947, strumento di nuova pianificazione che avrebbe però anche dovuto risolvere i problemi della città esistente, ereditando, con modifiche e aggiornamenti i debiti lasciati dalla precedente pianificazione e che non f…
Il progetto di Giacomo Amato per il palazzo Statella dei marchesi di Spaccaforno a Palermo
2013
The project of Giacomo Amato for the Statella palace of the Marquis of Spaccaforno in Palermo. The essay documents the project of architectural reconfiguration of Statella palace in Palermo, a building of the sixteenth century, transformed by Giacomo Amato for prestigious aristocratic clients. The examination of archival documents, with the analysis of the original drawings, help to clarify the building history, the stages of the construction and especially the role of the architect in the process of reconfiguration of the building. The project and construction of the palace are documented by seven drawings autographs, preserved in the fourth volume of the collection of Amato’s drawings and…
I PONTI AD ARCO IN CALCESTRUZZO SOSTENUTI DA CAVI NELLE FASI DI COSTRUZIONE ED ESERCIZIO
2011
LA CUPOLA DELLA CHIESA DEL GESU' A PALERMO: UN INTERVENTO DI RICOSTRUZIONE IN CEMENTO ARMATO
2010
Influence of compliance for an elastokinematic model of a proposed rear suspension
2014
The research is carried out to improve passenger’s comfort to increase the vehicles stability in dynamic conditions. The literature available in the automotive engineering considers different topics for studying suspensions. An example represents mechanisms structure and analysis (synthesis, kinematics, and dynamics) under various operating conditions. These aspects have been approached before analytically, numerical. The current paper studies the influence of the lateral force on the contact patch of the wheel and the corresponding variations of vehicle stability parameters, such as camber angle and wheel rear track. The study is performed for a newer innovative rear suspensions mechanism …
Optimization of the characteristic angles of both front and rear McPherson suspensions on a circular track using multi-body numerical simulation
2009
The research reported in this paper aims to simulate the road-holding of a virtual vehicle using multi-body simulation to estimate both the contact forces between the tyre and ground and the roll motion when cornering. Furthermore, the effect of the characteristic angles on the variation in the forces of the tyre in contact with the ground is studied to determine optimal values for these angles. Emphasis is placed on an average-class vehicle, of which both the external dimensions and mass are chosen appropriately, with a McPherson suspension mounted on both the front and the rear. The characteristic values of the camber and toe-in angles, in both the front and the rear, are optimized for m…
L'ANTICO CAMPANILE DELLA CATTEDRALE DI LECCE IN UN CONSULTO DEL 1574
2016
L'antico campanile della cattedrale di Lecce si trovava in una posizione diversa rispetto a quello esistente costruito nel 1658. La maestosa torre, con cinque ordini e una terminazione a corona, era collocata di fianco all'antica facciata principale della chiesa, sul lato sinistro. Nel 1574 a causa di numerosi crolli, gli amministratori della chiesa decisero di avvalersi del parere tecnico di tre professionisti: Padoano Schiero, Padoano Baxi e Gabriele Meschinello, chiamati ad esprimersi in merito alla pericolosità di tali crolli e allo stato della torre. Vennero prodotte tre relazioni tecniche i cui contenuti illustravano la necessità di demolire la torre al fine di scongiurare eventuali d…