Surface preparations and durability of iron-based shape memory alloy adhesively-bonded joints

Title

Surface preparations and durability of iron-based shape memory alloy adhesively-bonded joints

 Author

Pichler, Niels (ETH Zürich)
Wang, Wandong (Northwestern Polytechnical University)
Poulis, J.A. (TU Delft Structural Integrity & Composites) ORCID 0000-0003-3041-5285
Ghafoori, Elyas (Leibniz Universität)

Date

2023

 Abstract

Developing a bonded prestressed solution for strengthening structures utilizing an iron-based shape memory alloy (Fe-SMA), is of significant interest. This study is the first systematic investigation of adhesively-bonded Fe-SMA joints to achieve complete cohesive failure, which is an essential prerequisite for bond integrity. The Fe-SMA surface was prepared by combining UV/ozone exposure (UV), sol–gel (SG), and primers (PC, PNC), and the failure mode of the joint was investigated using the floating-roller peel test. Furthermore, the joint durability was studied through artificial aging using a salt spray cabinet. Cohesive failure was obtained for all investigated adhesives, and the effect of every surface preparation step was described. The application of sol–gel was found to be a crucial step in obtaining complete adhesive failure.


 Subject

Durability
Iron-based shape memory alloy
Primers and coupling agents
Surface treatment

 To reference this document use:

http://resolver.tudelft.nl/uuid:1ca59942-9830-48d9-8f6a-87d5485d20cb

 DOI

https://doi.org/10.1016/j.ijadhadh.2023.103439

 ISSN

0143-7496

 Source

International Journal of Adhesion and Adhesives, 125

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2023 Niels Pichler, Wandong Wang, J.A. Poulis, Elyas Ghafoori
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