Structural response of laminated glass elements is heavily influenced by the visco-thermo-elastic properties of polymer interlayer. Mechanical characterization of such polymers can be carried out with different experimental procedures such as creep tests, relaxation tests (both named transient tests) or tests with load or displacement periodically imposed. In the linear viscoelastic domain, mechanical parameters determined with such methods, are usually extended to time and frequency domain wider than the experimental one, translating the experimental points in the space of time or temperature, according to the time-temperature superposition principle. An incautious use of this procedure does not account for structural modifications that the polymer can suffer due to environmental actions such as solar radiation, temperature variations and moisture absorption. Here we describe the first results of an experimental campaign carried out with periodic tests on laminated glass specimens some of which previously exposed to moisture accelerated aging.

Analysis of environmental damage consequences on viscous thermo elastic properties of a polymer interlayer / L. Andreozzi; S. Briccoli Bati; M. Fagone; G. Ranocchiai; F. Zulli. - (2013), pp. 1-6. ((Intervento presentato al convegno XXI Congresso AIMETA tenutosi a Torino nel 17-20 settembre 2013.

Analysis of environmental damage consequences on viscous thermo elastic properties of a polymer interlayer

BRICCOLI BATI, SILVIA;FAGONE, MARIO;RANOCCHIAI, GIOVANNA;
2013

Abstract

Structural response of laminated glass elements is heavily influenced by the visco-thermo-elastic properties of polymer interlayer. Mechanical characterization of such polymers can be carried out with different experimental procedures such as creep tests, relaxation tests (both named transient tests) or tests with load or displacement periodically imposed. In the linear viscoelastic domain, mechanical parameters determined with such methods, are usually extended to time and frequency domain wider than the experimental one, translating the experimental points in the space of time or temperature, according to the time-temperature superposition principle. An incautious use of this procedure does not account for structural modifications that the polymer can suffer due to environmental actions such as solar radiation, temperature variations and moisture absorption. Here we describe the first results of an experimental campaign carried out with periodic tests on laminated glass specimens some of which previously exposed to moisture accelerated aging.
Atti del XXI Congresso dell'Associazione Italiana di Meccanica Teorica e Applicata
XXI Congresso AIMETA
Torino
17-20 settembre 2013
L. Andreozzi; S. Briccoli Bati; M. Fagone; G. Ranocchiai; F. Zulli
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2158/810875
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