Deformation and Anchoring of AA 2024-T3 rivets within thin printed circuit boards

Publikation: Beiträge in SammelwerkenAufsätze in KonferenzbändenForschungbegutachtet

Authors

  • Maria ClaraFarah Antunes Viallas Boas
  • Camila Fernanda Rodrigues
  • Lucian Attila Blaga
  • Jorge Fernandez dos Santos
  • Benjamin Klusemann
This work evaluates the viability of applying Friction Riveting as an alternative for the assembly of components on printed circuit boards (PCBs). The popular press-fit technology for assembling components on PCBs consists of a pin inserted tightly into a relatively smaller hole, resulting in good electrical and
mechanical properties. However, some limitations are highlighted, such as numerous processing steps and the need for predrilled holes. Friction Riveting is based on mechanical fastening and friction welding principles, where polymeric components are joined with metallic rivets through frictional heating and pressure. The main benefits of using Friction Riveting in PCBs compared with fit-press are (i) a reduced number of processing steps and (ii) shorter joining cycles, because there is no pre-drilling involved with fasteners anchored within the PCB
in a single step. The joints were manufactured using 5 mm diameter AA-2024-T3 rivets and 1.5 mm thick glassfiber-reinforced epoxy laminates (FR4-PCB). It is shown for the first time that it is possible to deform metallic rivets within thin composite plates at a reduced diameterto-thickness ratio. The feasibility study followed a one-factor-a-time approach for parameter screening and optical microscopy assessed joint formation of the deformed rivets inside the laminates through volumetric ratio (VR). The joints present significant deformation
(VR=0.5) at the tip of the rivet inserted into overlapped PCBs plates, with thicknesses below 3.0 mm, which is considered the lowest achieved so far with Friction Riveting.
OriginalspracheEnglisch
TitelESAFORM 2021 : 24th International Conference on Material Forming
Anzahl der Seiten12
ErscheinungsortLiège
VerlagULiège Library
Datum2021
Aufsatznummer21.4327
ISBN (Print)978-2-87019-302-0
ISBN (elektronisch)978-2-87019-303-7
DOIs
PublikationsstatusErschienen - 2021
Veranstaltung24th International Conference on Material Forming - ESAFORM 2021 - University of Liège, Liège, Belgien
Dauer: 14.04.202116.04.2021
Konferenznummer: 24
https://popups.uliege.be/esaform21/

DOI