Shape Memory Alloy components: energy-consistent modelling and testing

Andolfato, Luca (2020) Shape Memory Alloy components: energy-consistent modelling and testing. [Laurea magistrale], Università di Bologna, Corso di Studio in Automation engineering / ingegneria dell’automazione [LM-DM270], Documento full-text non disponibile
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The thesis aims to develop a novel control-oriented model for a Shape Memory Alloy (SMA) actuator and subsequently validate it through experimental tests. The main idea is to exploit energy balancing and exchange, along with proper constitutive equations, to represent SMA dynamical behavior. A SMA wire has been considered as a benchmark. The proposed approach returns equations with macroscopically reconstructable variables, embodying the hidden material’s internal phase state. This has allowed the development of simple test methodologies to characterize the several parameters. Moreover, it is also preparatory to a future control project. The characterization tests have been first validated in a simulation environment and subsequently carried out in the laboratory through an experimental set-up, consisting of a traction machine and ad hoc designed electronics. Promising results concerning the data’s accuracy have been obtained and they must be considered a first step towards more accurate modelling and test techniques.

Tipologia del documento
Tesi di laurea (Laurea magistrale)
Autore della tesi
Andolfato, Luca
Relatore della tesi
Correlatore della tesi
Corso di studio
Ordinamento Cds
Parole chiave
Shape Memory Alloy,Energy based modeling,Characterization test,Smart material
Data di discussione della Tesi
9 Ottobre 2020

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