Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation

Thermoplastic composites (TPCs) are predestined for use in lightweight structures, especially for high-volume applications. In many cases, joining is a key factor for the successful application of TPCs in multi-material systems. Many joining processes for this material group are based on warm formin...

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Main Authors: Juliane Troschitz, Benjamin Gröger, Veit Würfel, Robert Kupfer, Maik Gude
Format: Article
Language:English
Published: MDPI AG 2022-08-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/15/15/5454
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author Juliane Troschitz
Benjamin Gröger
Veit Würfel
Robert Kupfer
Maik Gude
author_facet Juliane Troschitz
Benjamin Gröger
Veit Würfel
Robert Kupfer
Maik Gude
author_sort Juliane Troschitz
collection DOAJ
description Thermoplastic composites (TPCs) are predestined for use in lightweight structures, especially for high-volume applications. In many cases, joining is a key factor for the successful application of TPCs in multi-material systems. Many joining processes for this material group are based on warm forming the joining zone. This results in a change of the local material structure characterised by modified fibre paths, as well as varying fibre contents, which significantly influences the load-bearing behaviour. During the forming process, many different phenomena occur simultaneously at different scales. In this paper, the deformation modes and flow mechanisms of TPCs during forming described in the literature are first analysed. Based on this, three different joining processes are investigated: embedding of inserts, moulding of contour joints, and hotclinching. In order to identify the phenomena occurring in each process and to describe the characteristic resulting material structure in the joining zones, micrographs as well as computed tomography (CT) analyses are performed for both individual process stages and final joining zones.
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spelling doaj.art-eccf63db8c58465b8a5c59428c1db4c72023-12-03T12:46:57ZengMDPI AGMaterials1996-19442022-08-011515545410.3390/ma15155454Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and CharacterisationJuliane Troschitz0Benjamin Gröger1Veit Würfel2Robert Kupfer3Maik Gude4Institute of Lightweight Engineering and Polymer Technology, Technische Universität Dresden, Holbeinstraße 3, 01307 Dresden, GermanyInstitute of Lightweight Engineering and Polymer Technology, Technische Universität Dresden, Holbeinstraße 3, 01307 Dresden, GermanyInstitute of Lightweight Engineering and Polymer Technology, Technische Universität Dresden, Holbeinstraße 3, 01307 Dresden, GermanyInstitute of Lightweight Engineering and Polymer Technology, Technische Universität Dresden, Holbeinstraße 3, 01307 Dresden, GermanyInstitute of Lightweight Engineering and Polymer Technology, Technische Universität Dresden, Holbeinstraße 3, 01307 Dresden, GermanyThermoplastic composites (TPCs) are predestined for use in lightweight structures, especially for high-volume applications. In many cases, joining is a key factor for the successful application of TPCs in multi-material systems. Many joining processes for this material group are based on warm forming the joining zone. This results in a change of the local material structure characterised by modified fibre paths, as well as varying fibre contents, which significantly influences the load-bearing behaviour. During the forming process, many different phenomena occur simultaneously at different scales. In this paper, the deformation modes and flow mechanisms of TPCs during forming described in the literature are first analysed. Based on this, three different joining processes are investigated: embedding of inserts, moulding of contour joints, and hotclinching. In order to identify the phenomena occurring in each process and to describe the characteristic resulting material structure in the joining zones, micrographs as well as computed tomography (CT) analyses are performed for both individual process stages and final joining zones.https://www.mdpi.com/1996-1944/15/15/5454thermoplastic compositemulti-materialjoiningforming phenomenamaterial structureprocess analysis
spellingShingle Juliane Troschitz
Benjamin Gröger
Veit Würfel
Robert Kupfer
Maik Gude
Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation
Materials
thermoplastic composite
multi-material
joining
forming phenomena
material structure
process analysis
title Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation
title_full Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation
title_fullStr Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation
title_full_unstemmed Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation
title_short Joining Processes for Fibre-Reinforced Thermoplastics: Phenomena and Characterisation
title_sort joining processes for fibre reinforced thermoplastics phenomena and characterisation
topic thermoplastic composite
multi-material
joining
forming phenomena
material structure
process analysis
url https://www.mdpi.com/1996-1944/15/15/5454
work_keys_str_mv AT julianetroschitz joiningprocessesforfibrereinforcedthermoplasticsphenomenaandcharacterisation
AT benjamingroger joiningprocessesforfibrereinforcedthermoplasticsphenomenaandcharacterisation
AT veitwurfel joiningprocessesforfibrereinforcedthermoplasticsphenomenaandcharacterisation
AT robertkupfer joiningprocessesforfibrereinforcedthermoplasticsphenomenaandcharacterisation
AT maikgude joiningprocessesforfibrereinforcedthermoplasticsphenomenaandcharacterisation