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Macroscopic response and decohesion models of metal-polymer laminates

Bolzon G., Shahmardani M.

Engineering Transactions

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2017

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Vol. 65, iss. 1

53--59

EN

Metal-polymer laminates are used in several technological fields, with applications ranging from flexible electronics to food packaging and lightweight components for transportation sectors. Models of different complexity have been proposed to evaluate the overall performances of these materials. Models are also used to recover the adhesion properties of the plies, which are difficult to be characterized otherwise. The overall material responses resulting from different constitutive assumptions are examined in this paper.

2

A numerical investigation of the influence of the material microstructure on the failure mode of metal ceramic composites

Pandi P., Bolzon G.

Engineering Transactions

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2016

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Vol. 64, iss. 4

547--553

EN

Metal failure is often initiated by strain localization in narrow bands. In metal matrix composites, the occurrence and the consequences of this phenomenon are influenced by the material microstructure. This dependency has been numerically investigated by considering periodic and quasi-periodic arrangement of ceramic fibers in a metal matrix, with reinforcement content varying between 10% and 50% in volume. The constitutive response of the metal has been simulated by the widely used GTN (Gurson-Tvergaard-Needleman) continuum damage-plasticity model with evolution law based on local porosity. The onset of failure for the composite has been identified with the critical growth of micro voids that induce softening at the macro scale. An extensive study has been performed in order to distinguish the effects of the material microstructure, the role of the imperfections and the influence of the simulation details. The main results of this investigation are summarized in this paper.

3

CER telegeomatics applications and projects in Central Europe

Manzoni G., Bolzon G., Cefalo R., Gherdevic D., Martinolli S., Piemonte A., Rizzo R., Sluga T.

Reports on Geodesy

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2006

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z. 2/77

273-281

EN

Applications and Projects of the Centre of Excellence in TeleGeomatics, University of Trieste, are herein reported, in particular as far as regards the Interreg SISA (Survey and Information System of Adriatic Roads) Project. The new instruments and devices of MMS used for the surveys are described together with the obtained results and accuracies. Moreover the results of laser scanner surveys from the Mobile Mapping Systems are presented and compared to another more accurate system. Future developments and application are presented linking together different techniques and methodologies for real time surveys, in particular with the use of WADGPS techniques also through InterNet (SISNeT ESA Project), with a software developed at the Laboratory oC Topogra.phy and GIS, Department of Civil and Environmental Engineering.