Hybrid Metal–Polymer Joints II

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Welding and Joining".

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 2675

Special Issue Editor


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Guest Editor
Institute of Materials Science, Joining and Forming, Graz University of Technology, 8010 Graz, Austria
Interests: joining technology; additive manufacturing; materials science; welding metallurgy; polymer welding; composites; metals and hybrid structures
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Special Issue Information

Dear Colleagues,

Multi-material hybrid structures (MMHSs) are in high demand in several fields, including civil, transport, aerospace, and biomedical fields. In transportation industries, MMHSs are used to reduce a product's weight without affecting the structural performance, consequently resulting in lower fuel consumption, and, in the case of electric vehicles, to increase their autonomy. Furthermore, this weight reduction dramatically helps to reduce CO2 emissions, as well as to improve the overall performance. The main challenge when manufacturing MMHSs is represented by the adoption of the joining process between such dissimilar materials. Conventional mechanical fastening and adhesive bonding involve several issues. Thus, because of the increasing demand for MMHSs, several new joining processes have been developed in order to overcome such limitations. Fast mechanical joining processes (such as clinching as self-pierce riveting) and thermomechanical joining processes (such as laser direct joining, friction joining, and ultrasonic joining) have been developed in recent years as suitable alternatives for the production of multi-materials hybrid structures.

This Special Issue aims to collect original research and literature reviews concerning conventional processes and recent developments in this field. The following topics will be explored:

  • Mechanism of bonding/joint formation;
  • Process monitoring and simulation;
  • Process control;
  • The influence of preprocessing;
  • Joining additively manufactured components;
  • Mechanical characterization;
  • Microstructural, chemical, and physical characterization;
  • Other characterization methods;
  • New characterization methods.

Prof. Dr. Sergio T. Amancio-Filho
Guest Editor

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Keywords

  • hybrid structures
  • joining
  • welding
  • metal–polymer structures
  • metal–composite structures
  • characterization
  • process modeling
  • process control

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Published Papers (1 paper)

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Research

20 pages, 10096 KiB  
Article
Manufacturing of Metal–Polymer Hybrid Parts Using a Desktop 3-Axis Fused Filament Fabrication 3D-Printer
by Carlos Belei, Benjamin Meier and Sergio T. Amancio-Filho
Metals 2023, 13(7), 1262; https://doi.org/10.3390/met13071262 - 13 Jul 2023
Cited by 3 | Viewed by 2321
Abstract
This study evaluated the manufacturing of metal–polymer hybrid parts using a 3-axis desktop Fused Filament Fabrication (FFF) printer. Two printing strategies were employed: a more trivial one, consisting of 3D-printing the polymer directly onto the metal surface, and an alternative one, consisting of [...] Read more.
This study evaluated the manufacturing of metal–polymer hybrid parts using a 3-axis desktop Fused Filament Fabrication (FFF) printer. Two printing strategies were employed: a more trivial one, consisting of 3D-printing the polymer directly onto the metal surface, and an alternative one, consisting of encasing the metal with printed polymer. Materials used were Ti-6Al-4V (both rolled/sandblasted and 3D-printed by laser powder bed fusion) and polyamide-based polymers. Demonstrators were designed to resemble omega-shaped skin stringers commonly used in vehicular applications. Several challenges were addressed, including harvesting the heat emanating from the deposited polymer to locally increase the substrate temperature, as well as positioning the metallic parts to avoid undesired collisions during the print job. Furthermore, to better understand the behavior of the encased metal under load, pullout tests were conducted on commercially available M6 and M8 steel nuts that were enclosed in a 3D-printed composite block. Results revealed that the length of the edge shared by the enclosure and metal significantly impacted the pullout strength. Full article
(This article belongs to the Special Issue Hybrid Metal–Polymer Joints II)
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