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Effect of Friction Stir Welding Techniques and Parameters on Polymers Joint Efficiency—A Critical Review

The objective of current work is to analyse the influence of different welding techniques and welding parameters on the morphology and mechanical strength of friction stir welds (FSW) in polymers, based on data collected in the literature. In the current work, only articles that provide data on the...

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Autores principales: Pereira, Miguel A. R., Amaro, Ana M., Reis, Paulo N. B., Loureiro, Altino
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8272154/
https://www.ncbi.nlm.nih.gov/pubmed/34201742
http://dx.doi.org/10.3390/polym13132056
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author Pereira, Miguel A. R.
Amaro, Ana M.
Reis, Paulo N. B.
Loureiro, Altino
author_facet Pereira, Miguel A. R.
Amaro, Ana M.
Reis, Paulo N. B.
Loureiro, Altino
author_sort Pereira, Miguel A. R.
collection PubMed
description The objective of current work is to analyse the influence of different welding techniques and welding parameters on the morphology and mechanical strength of friction stir welds (FSW) in polymers, based on data collected in the literature. In the current work, only articles that provide data on the joint efficiency, or sufficient information to estimate it are considered. The process using conventional tool is presented and compared with new procedures developed for FSW of polymers, such as those using tools with heated stationary shoulder, preheating of the polymer or double-side passage of the tool. The influence of tool rotational speed (w), welding speed (v), tilt angle and geometry of the pin are discussed. This work focuses on the polymers most studied in the literature, polyethylene (PE) and polypropylene (PP). The use of external heating and tools with stationary shoulder proved to be of great importance in improving the surface finish, reducing defects, and increasing the mechanical strength of the welds. The increase in the w/v ratio increased the joint efficiency, especially when using conventional tools on PE. A trend was obtained for conventional FSW, but it was difficult to establish mathematical relationships, because of the variability of welding conditions.
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spelling pubmed-82721542021-07-11 Effect of Friction Stir Welding Techniques and Parameters on Polymers Joint Efficiency—A Critical Review Pereira, Miguel A. R. Amaro, Ana M. Reis, Paulo N. B. Loureiro, Altino Polymers (Basel) Review The objective of current work is to analyse the influence of different welding techniques and welding parameters on the morphology and mechanical strength of friction stir welds (FSW) in polymers, based on data collected in the literature. In the current work, only articles that provide data on the joint efficiency, or sufficient information to estimate it are considered. The process using conventional tool is presented and compared with new procedures developed for FSW of polymers, such as those using tools with heated stationary shoulder, preheating of the polymer or double-side passage of the tool. The influence of tool rotational speed (w), welding speed (v), tilt angle and geometry of the pin are discussed. This work focuses on the polymers most studied in the literature, polyethylene (PE) and polypropylene (PP). The use of external heating and tools with stationary shoulder proved to be of great importance in improving the surface finish, reducing defects, and increasing the mechanical strength of the welds. The increase in the w/v ratio increased the joint efficiency, especially when using conventional tools on PE. A trend was obtained for conventional FSW, but it was difficult to establish mathematical relationships, because of the variability of welding conditions. MDPI 2021-06-23 /pmc/articles/PMC8272154/ /pubmed/34201742 http://dx.doi.org/10.3390/polym13132056 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Pereira, Miguel A. R.
Amaro, Ana M.
Reis, Paulo N. B.
Loureiro, Altino
Effect of Friction Stir Welding Techniques and Parameters on Polymers Joint Efficiency—A Critical Review
title Effect of Friction Stir Welding Techniques and Parameters on Polymers Joint Efficiency—A Critical Review
title_full Effect of Friction Stir Welding Techniques and Parameters on Polymers Joint Efficiency—A Critical Review
title_fullStr Effect of Friction Stir Welding Techniques and Parameters on Polymers Joint Efficiency—A Critical Review
title_full_unstemmed Effect of Friction Stir Welding Techniques and Parameters on Polymers Joint Efficiency—A Critical Review
title_short Effect of Friction Stir Welding Techniques and Parameters on Polymers Joint Efficiency—A Critical Review
title_sort effect of friction stir welding techniques and parameters on polymers joint efficiency—a critical review
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8272154/
https://www.ncbi.nlm.nih.gov/pubmed/34201742
http://dx.doi.org/10.3390/polym13132056
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