Search results for " tecnologia."

Speckle Interferometry Analysis of Full-bending Behavior of GFRP Pultruded Material

2016

Abstract The use of Glass Fiber Reinforced Polymer materials (GFRP) has increased in the last years even among civil structural engineering due to their high specific strength, lightweight and excellent corrosion resistance. With application of the pultrusion method, the manufacture of large-scale profiles with various cross-section forms became potentially possible with relatively low costs. Usually two different technological approaches are available to realize the element: in the first one a mat-roving-mat sequence is adopted, in the second one only roving is present. Continuous filament mat (CFM, fibers distributed randomly in all directions) is often used to build up laminate thickness…

A DIC-based study of flexural behaviour of roving/mat/roving pultruded composites

2015

Abstract This paper reports a study of the flexural behaviour and resultant failure modes in E-glass/polyester pultruded composites. The digital image correlation (DIC) method is used to estimate the effect of fibre orientation on failure behaviour in thick beams, taking into account the presence of continuous filament mat layer (CFM) in the stacking sequence. In particular, the tests were carried out for specimens with off-axis angle of 0°, 7.5°, 15°, 30°, 45° and 90°. The crack initiation and the failure mechanisms depend on the mutual interaction between the stiffness properties of different areas in the stacking sequence. An influence index (I) was introduced to evaluate the magnitude o…

Experimental assessment of the shield-to-salt-fog properties of basalt and glass fiber reinforced composites in cork core sandwich panels applications

2018

Abstract In this paper, the effect of salt-fog exposition on the mechanical behavior of sandwich panels having cork agglomerate core was investigated. In particular, the aim of this research work is to assess the shield function of unidirectional basalt and E-glass reinforced polymer on the aging and failure mechanism of the core when such class of material are destined to operate in hostile environments (e.g., marine environment). To do this, the manufactured sandwich panels were exposed up to 60 days to salt-fog environment, according to ASTM B 117 standard. Unaged and aged specimens were analyzed through three point bending tests after aging time of 10, 25 and 60 days. Digital Image Corr…

Il disegno (dettagliato) e la città moderna

2016

Il disegno e in particolare il disegno tecnologico nella sua semplice essenza fatta di linee, di tratti, di sfumature costituisce la cultura tecnologica che il progettista ha maturato nella sua esperienza professionale. Nel disegno e nel dettaglio tecnologico sono raccolte, con semplici tratti, nel primo le intenzionalità dell’autore e nel secondo, in maniera più tecnica, le specifiche di ciò che verrà realizzato. Il dettaglio è da considerare parte di una totalità, di un tutto che non avrebbe ragione di esistere senza quella parte. In Architettura il dettaglio svela la natura degli artifici, per conoscere le parti che li compongono, per analizzarle per poterle comprendere ed eventualmente …

Design Archives: Sustainable Solutions for Young Designers in Valencia, Spain

2023

Design education is practical and theoretical; however, it does not usually include the study of cultural heritage. Nonetheless, relations with academia have been strong since the 18th century, when the need to educate designers spread across the continent to improve design and make it competitive in the market. In this paper, we recover that spirit and act as mediators between heritage and young people to create links and preserve cultural heritage. A case study was conducted at the Public Valencian Design School with 31 product design students. The methodology applied was based on iterative processes that allowed students to discover design and silk heritage when they proposed innovative …

Levés par scanner laser et supports numériques pour la documentation de l’archéologie : l’expérience APER à Agrigente

2014

L'articolo raccoglie considerazioni critiche da diversi punti di vista a proposito delle realizzazioni del Progetto APER in materia di rilievi laser scanner e supporti digitali. This article presents observations and analyses of all kinds on what the APER Project has produced in terms of laser scanner surveys and digital aids.

Le Domus di Piazza della Vittoria a Palermo

2012

Urban archaelogy is an important source of information in order to learn about the history and the culture of a town. The city of Palermo is a great example of a highly stratified area which is characterized by a complex urban and architectonic palimpsest. Promoting the knowledge, the conservation and the enhancement of its historical and archaeological urban sites is, therefore, central to rebuild the diachronic and diatopic dimension of the past, through the use of cognitive means and technical competences. This is the author's aim of the study.

Il dottorato in Recupero e Fruizione dei Contesti Antichi dell'Università di Palermo

2011

A novel approach to prevent graphene oxide re-aggregation during the melt compounding with polymers

2015

Abstract The technology for the preparation of polymer-GO nanocomposites was investigated by studying the structure-properties relationships of two different systems, based on PA6 and EVA, fabricated by using different preparation methods, i.e. melt mixing, wet phase inversion, and the combination of the two. The morphology of nanocomposites resulted dramatically influenced by the technique adopted and showed to be the critical variable affecting the physical properties of the materials. Finally, the mechanical and dynamic-mechanical of the nanocomposites were improved by using the hybrid technique combining the two procedures.

E-Learning Experiences in La Ribera Health Department

2014

This paper shows how the training of health professionals is improving thanks to the use of new technologies, in particular e-learning. This type of technology is widely used in medical education and there are multiple research works that report its effective deployment by health professionals and students. However, there is a need to incorporate e-learning platforms and online methods in healthcare organizations through a systematic and rigorous approach what is proposed in the current work. This approach has been applied since 2009 in the context of La Ribera Health Department implementing a high number of e-learning experiences. The obtained outcomes reveal how useful have been these exp…