Force-Controlled Friction Riveting - A Hybrid Joining Process

Goncalo Filipe Pina Cipriano, Pedro Vilaça, S. T. Amancio-Filho

Publikation: KonferenzbeitragPosterForschungBegutachtung

Abstract

Friction Surfacing (FS) is a solid-state welding technique. It harnesses the frictional heat generated from the contact between a rotating consumable rod and a fixed substrate to drastically soften the former, enabling its mechanical conformation by means of severe plastic deformation. Currently, the process is most known for its ability to produce metallic coatings below melting temperature. This particular feature is responsible for suppressing common problems usually present on fusion-based processes, such as pores, inclusions, high residual stresses induced by solidification and coring effects, which are also present to a certain extent on many additive manufacturing (AM) processes. Moreover, the layer-by-layer approach utilized by the FS technique, as well as its relatively high deposition rates and the enhancement in mechanical properties promoted by the thermo-mechanical processing indicate that additive manufacturing parts by FS may be a viable alternative to fusion-based AM techniques. However, at the current stage, multi-layer FS depositions have not been extensively explored for several alloys; the printing resolution is still considerably lower than on other techniques and the scrap produced during both the process and the posterior milling steps has not been properly addressed. Therefore, future work shall be concentrated on the aforementioned challenges, as well as on alternatives to optimize the rod feed to improve deposition rates.
Originalspracheenglisch
PublikationsstatusVeröffentlicht - 2018

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Riveting
Rivets
Joining
Friction
Aluminum
Steel
Thermosets
Force control
Titanium
Design of experiments
Thermoplastics
Plastic deformation
Metals
Composite materials
Polymers

Fields of Expertise

  • Advanced Materials Science

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Force-Controlled Friction Riveting - A Hybrid Joining Process. / Pina Cipriano, Goncalo Filipe; Vilaça, Pedro ; Amancio-Filho, S. T.

2018.

Publikation: KonferenzbeitragPosterForschungBegutachtung

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title = "Force-Controlled Friction Riveting - A Hybrid Joining Process",
abstract = "The Friction Riveting process was developed to perform multi-material point-on-plate hybrid connections. The basic configuration of the process consists on joining a featurelessmetallic rivet with a single unreinforced polymeric plate (Figure 1). Different configurations can be performed, joining multiple overlapping layers of a single or multiple materials.Different combinations of materials have been successfully joined, using metals such as aluminum, steel and titanium. Polymeric materials have been joined in unreinforced andreinforced configurations, of both thermoplastics and thermosets. The process-controlling method here systematically investigated is force-control. Response surface methodology andcentral composite design of experiments were used to define the joining parameter sets. The materials used for this investigation were aluminum 2024-T351 (rivet) and unreinforcedpolyetherimide. Several process responses have been studied, such as the plastic deformation of the rivet, mechanical performance and energy input during the process. Theseinvestigations aimed for a deep understanding of the force-controlled process.",
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AU - Pina Cipriano, Goncalo Filipe

AU - Vilaça, Pedro

AU - Amancio-Filho, S. T.

PY - 2018

Y1 - 2018

N2 - The Friction Riveting process was developed to perform multi-material point-on-plate hybrid connections. The basic configuration of the process consists on joining a featurelessmetallic rivet with a single unreinforced polymeric plate (Figure 1). Different configurations can be performed, joining multiple overlapping layers of a single or multiple materials.Different combinations of materials have been successfully joined, using metals such as aluminum, steel and titanium. Polymeric materials have been joined in unreinforced andreinforced configurations, of both thermoplastics and thermosets. The process-controlling method here systematically investigated is force-control. Response surface methodology andcentral composite design of experiments were used to define the joining parameter sets. The materials used for this investigation were aluminum 2024-T351 (rivet) and unreinforcedpolyetherimide. Several process responses have been studied, such as the plastic deformation of the rivet, mechanical performance and energy input during the process. Theseinvestigations aimed for a deep understanding of the force-controlled process.

AB - The Friction Riveting process was developed to perform multi-material point-on-plate hybrid connections. The basic configuration of the process consists on joining a featurelessmetallic rivet with a single unreinforced polymeric plate (Figure 1). Different configurations can be performed, joining multiple overlapping layers of a single or multiple materials.Different combinations of materials have been successfully joined, using metals such as aluminum, steel and titanium. Polymeric materials have been joined in unreinforced andreinforced configurations, of both thermoplastics and thermosets. The process-controlling method here systematically investigated is force-control. Response surface methodology andcentral composite design of experiments were used to define the joining parameter sets. The materials used for this investigation were aluminum 2024-T351 (rivet) and unreinforcedpolyetherimide. Several process responses have been studied, such as the plastic deformation of the rivet, mechanical performance and energy input during the process. Theseinvestigations aimed for a deep understanding of the force-controlled process.

M3 - Poster

ER -