Article (Scientific journals)
Resistive Heating of a Shape Memory Composite: Analytical, Numerical and Experimental Study
Pereira Sanchez, Clara Andrea; Houbben, Maxime; Fagnard, Jean-François et al.
2022In Smart Materials and Structures, 31 (2), p. 025003
Peer reviewed
 

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Keywords :
shape memory; composite; carbon nanotubes; resistive heating; electroactivation
Abstract :
[en] This work investigates in detail the Joule resistive heating phenomenon of electroactive Shape Memory Composites (SMC) when an electric current is injected at constant power. The SMC is a covalent poly(ε-caprolactone) network filled with 3 wt% of multiwall carbon nanotubes. The resistive heating of the SMC is studied by means of surface temperature measurements, analytical formulas and a coupled 3D thermo-electric numerical model. Analytical expressions are derived for the 2D temperature distribution within a parallelepipedic SMC, either with constant or linearly-dependent electrical resistivity. These analytical expressions can be used to investigate the influence of geometrical and material parameters in the steady-state temperature and its distribution across the sample. The results also allow one to identify the parameters that are crucial for predicting the temperature rise due to resistive heating: the temperature dependence of the resistivity has little effect on the steady-state temperature, whereas the thermal conductivity plays a significant role. The time-dependent temperature is shown to be related to the particular temperature dependence of heat capacity. Furthermore, the presence of external objects (clamps or grips) used during the shape memory cycle must be taken into consideration for a certain temperature to be reached since they result in a lower steady-state temperature and a slower resistive heating phenomenon. With the findings presented in this work, accurate resistive heating can be predicted for a SMC upon the injection of an electric current at constant power.
Research center :
Electronics, Microsystems, Measurements and Instrumentation
omplex and Entangled Systems from Atoms to Materials (CESAM) Research Unit
Computational and Multiscale Mechanics of Materials
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Electrical & electronics engineering
Materials science & engineering
Mechanical engineering
Author, co-author :
Pereira Sanchez, Clara Andrea ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
Houbben, Maxime ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Fagnard, Jean-François  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
Laurent, Philippe ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes microélectroniques intégrés
Jérôme, Christine  ;  University of Liège (ULiège), Complex and Entangled Systems from Atoms to Materials (CESAM) Research Unit, Center for Education and Research on Macromolecules (CERM), Belgium
Noels, Ludovic  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3)
Vanderbemden, Philippe  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques
Language :
English
Title :
Resistive Heating of a Shape Memory Composite: Analytical, Numerical and Experimental Study
Publication date :
2022
Journal title :
Smart Materials and Structures
ISSN :
0964-1726
eISSN :
1361-665X
Publisher :
Institute of Physics Publishing, United Kingdom
Volume :
31
Issue :
2
Pages :
025003
Peer reviewed :
Peer reviewed
Name of the research project :
Synthesis, Characterization, and MultiScale Model of Smart Composite Materials (S3CM3)
Funders :
Communauté française de Belgique : Direction Générale de l'Enseignement Non Obligatoire et de la Recherche Scientifique - DGENORS
Commentary :
This is the authors’ version of the article published in Smart Materials and Structures. Changes were made to this version by the publisher prior to publication. The final version is available at https://doi.org/10.1088/1361-665X/ac3ebd
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since 21 January 2022

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