PSI - Issue 33

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 33 (2021) 1073–1081

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the IGF ExCo Click here and insert your abstract text. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo Keywords: Shape memory composites; shape morphing; interfacial strength SMA-polymer samples were carri d out under different thermo-mechanical loading condit ons with th aim of understand ng the eff ct o m chanical s r ss and thermal activation on the shear strength between SMA wire and embedding resi . To thi im, three different pull-out experiments were carried out: i) mecha ical test of as manufactured samples, ii) echanical tests after cyclic th rmal activation of the sample and iii) pull-out t st during the activation of the SMA wire. The aim is to understand the influence of the mechanical and rmal stresses a well as their combination on th interfacial strength of SMA/polymer sampl . Re ults revea ed th , for the investigated resin, thermal stresses and temperature during thermal activation represent the most responsible of delamination mechanisms. Click here and insert your abstract text. © 2021 The Authors. Published by ELSEVIER B.V. This is an open acc ss article und r the CC BY-NC-ND licens (https:// reativecommons.org/licenses/by-nc-nd/4.0) P er-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo Keywords: Shape memory composites; shape morphing; interfacial strength IGF26 - 26th International Conference on Fracture and Structural Integrity Shape memory alloys-polymer composites: interfacial strength under mechanical and thermal loading Emanuele Sgambitterra a , Elio Curcio a , Stefano Rodinò a , Danilo Renzo a , Pietro Magarò a , Franco Furgiuele a , Marco Brandizzi b , Carmine Maletta a, * a Department of Mechanical Energy and Management Engimneering, Univeristy of Calabria, P. Bucci 44C, 87036 Rende, Italy b Stellantis, Automotive Research & Advanced Engineering, Via Ex Aeroporto, 80038 Pomigliano d'Arco - Italy This work reports results of preliminary investigations of an R&D project on shape memory alloy-based composites with shape morphing capabilities to be used as active aerodynamic components in automotive. The work addresses a major issue for SMA-polymer integration, that is the limited interfacial strength between metals and polymers. In particular, pull-out tests of SMA-polymer samples were carried out under different thermo-mechanical loading conditions with the aim of understanding the effect of mechanical stress and thermal activation on the shear strength between SMA wire and embedding resin. To this aim, three different pull-out experiments were carried out: i) mechanical test of as manufactured samples, ii) mechanical tests after cyclic thermal activation of the sample and iii) pull-out test during the activation of the SMA wire. The aim is to understand the influence of the mechanical and thermal stresses as well as their combination on the interfacial strength of SMA/polymer samples. Results revealed that, for the investigated resin, thermal stresses and temperature during thermal activation represent the most responsible of delamination mechanisms. IGF26 - 26th International Conference on Fracture and Structural Integrity Shape memory alloys-polymer composites: interfacial strength under mechanical and thermal loading Emanuele Sgambitterra a , Elio Curcio a , Stefano Rodinò a , Danilo Renzo a , Pietro Magarò a , Franco Furgiuele a , Marco Brandizzi b , Carmine Maletta a, * a Department of Mechanical Energy nd Management imneering, Univeristy of Calabria, . Bucci 44C, 87036 Rende, Italy b Stellantis, Automotive Research & Advanced Engineering, Via Ex Aeroporto, 80038 Pomigliano d'Arco - Italy Abstract This work reports results f preliminary nvestigations of an R&D project on shap memory alloy-ba d comp s tes with shape morphing capabilities to be us d as active aerodynamic compon nts in automotive. Th work addresses a maj r issue f r integration, that is the limited interfacial st ength between metals and polymers. In particular, pull-out tests of Abstract

* Corresponding author. Tel.: +39 0984 494662; fax: +39 0984 494673. E-mail address: carmine.maletta@unical.it * Corresponding author. Tel.: +39 0984 494662; fax: +39 0984 494673. E-mail address: carmine.maletta@unical.it

2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo 2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article und r the CC BY-NC-ND license (https:// reativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the IGF ExCo 10.1016/j.prostr.2021.10.119