Investigation of different process routes for joining thermoplastic composite/steel joints via the embedding of cold formed metallic pin structures

This study focuses on the integration of continuous fiber-reinforced thermoplastics (CFRT) with metal components through the use of cold-formed pin structures. Comparing six different joining methods with varying heat generation approaches, we investigated their impact on the mechanical properties a...

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Main Authors: Julian Popp, Dietmar Drummer
Format: Article
Language:English
Published: Elsevier 2024-11-01
Series:Journal of Advanced Joining Processes
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2666330924000876
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author Julian Popp
Dietmar Drummer
author_facet Julian Popp
Dietmar Drummer
author_sort Julian Popp
collection DOAJ
description This study focuses on the integration of continuous fiber-reinforced thermoplastics (CFRT) with metal components through the use of cold-formed pin structures. Comparing six different joining methods with varying heat generation approaches, we investigated their impact on the mechanical properties and joint integrity. Ultrasonic vibration emerged as a highly promising method, offering both rapid joining operations and favorable mechanical characteristics with average failure loads in lap shear tests of up to 249 N. In comparison, vibration welding showed drawbacks, resulting in CFRT damage, potential pin failure, and diminished mechanical performance with maximum average lap shear loads of 216 N. Additionally, traces of zinc residue were identified on the CFRT surface, raising concerns about the corrosion resistance of the metal component. In summary, vibration welding appears unsuitable for pin joining applications. Infrared heating, while showcasing good mechanical performance with lap shear loads of up to 257 N, proved to be a more time-consuming process compared to ultrasonic joining. It also resulted in inferior mechanical strength under shear load in the direction of the fiber orientation (238 N). To assess the mechanical potential of pin joints relatively to established joining methods, we created and tested adhesively joined reference samples. Pin joints demonstrated a significant advantage under shear load, showing approximately double the shear strength (17.8 MPa) compared to adhesively joined samples (8.9 MPa). However, under normal load, pin joints exhibited lower strength, highlighting the need for further optimization to enhance their practical applicability.
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spelling doaj-art-d1420be412334bd0a73bf374895af9f22025-08-20T02:38:18ZengElsevierJournal of Advanced Joining Processes2666-33092024-11-011010027110.1016/j.jajp.2024.100271Investigation of different process routes for joining thermoplastic composite/steel joints via the embedding of cold formed metallic pin structuresJulian Popp0Dietmar Drummer1Corresponding author.; Friedrich-Alexander-Universität Erlangen-Nürnberg, Chair of Polymer Technology, GermanyFriedrich-Alexander-Universität Erlangen-Nürnberg, Chair of Polymer Technology, GermanyThis study focuses on the integration of continuous fiber-reinforced thermoplastics (CFRT) with metal components through the use of cold-formed pin structures. Comparing six different joining methods with varying heat generation approaches, we investigated their impact on the mechanical properties and joint integrity. Ultrasonic vibration emerged as a highly promising method, offering both rapid joining operations and favorable mechanical characteristics with average failure loads in lap shear tests of up to 249 N. In comparison, vibration welding showed drawbacks, resulting in CFRT damage, potential pin failure, and diminished mechanical performance with maximum average lap shear loads of 216 N. Additionally, traces of zinc residue were identified on the CFRT surface, raising concerns about the corrosion resistance of the metal component. In summary, vibration welding appears unsuitable for pin joining applications. Infrared heating, while showcasing good mechanical performance with lap shear loads of up to 257 N, proved to be a more time-consuming process compared to ultrasonic joining. It also resulted in inferior mechanical strength under shear load in the direction of the fiber orientation (238 N). To assess the mechanical potential of pin joints relatively to established joining methods, we created and tested adhesively joined reference samples. Pin joints demonstrated a significant advantage under shear load, showing approximately double the shear strength (17.8 MPa) compared to adhesively joined samples (8.9 MPa). However, under normal load, pin joints exhibited lower strength, highlighting the need for further optimization to enhance their practical applicability.http://www.sciencedirect.com/science/article/pii/S2666330924000876Hybrid joiningThermoplastic compositesPinContinous fiber reinforced thermoplasticGlass fiber
spellingShingle Julian Popp
Dietmar Drummer
Investigation of different process routes for joining thermoplastic composite/steel joints via the embedding of cold formed metallic pin structures
Journal of Advanced Joining Processes
Hybrid joining
Thermoplastic composites
Pin
Continous fiber reinforced thermoplastic
Glass fiber
title Investigation of different process routes for joining thermoplastic composite/steel joints via the embedding of cold formed metallic pin structures
title_full Investigation of different process routes for joining thermoplastic composite/steel joints via the embedding of cold formed metallic pin structures
title_fullStr Investigation of different process routes for joining thermoplastic composite/steel joints via the embedding of cold formed metallic pin structures
title_full_unstemmed Investigation of different process routes for joining thermoplastic composite/steel joints via the embedding of cold formed metallic pin structures
title_short Investigation of different process routes for joining thermoplastic composite/steel joints via the embedding of cold formed metallic pin structures
title_sort investigation of different process routes for joining thermoplastic composite steel joints via the embedding of cold formed metallic pin structures
topic Hybrid joining
Thermoplastic composites
Pin
Continous fiber reinforced thermoplastic
Glass fiber
url http://www.sciencedirect.com/science/article/pii/S2666330924000876
work_keys_str_mv AT julianpopp investigationofdifferentprocessroutesforjoiningthermoplasticcompositesteeljointsviatheembeddingofcoldformedmetallicpinstructures
AT dietmardrummer investigationofdifferentprocessroutesforjoiningthermoplasticcompositesteeljointsviatheembeddingofcoldformedmetallicpinstructures