---
_id: '51201'
abstract:
- lang: eng
  text: <jats:p>In lightweight design, clinching is a cost-efficient solution as the
    joint is created through localized cold-forming of the joining parts. A clinch
    point’s quality is usually assessed using ex-situ destructive testing methods.
    These, however, are unable to detect phenomena immediately during the joining
    process. For instance, elastic deformations reverse and cracks close after unloading.
    In-situ methods such as the force-displacement evaluation are used to control
    a clinching process, though deviations in the clinch point geometry cannot be
    derived with this method. To overcome these limitations, the clinching process
    can be investigated using in-situ computed tomography (in-situ CT). However, a
    clinching tool made of steel would cause strong artefacts and a high attenuation
    in the CT measurement, reducing the significance of this method. Additionally,
    when joining parts of the same material, the sheet-sheet interface is hardly detectable.
    This work aims at identifying, firstly, tool materials that allow artefact-reduced
    CT measurements during clinching, and, secondly, radiopaque materials that can
    be applied between the joining parts to enhance the detectability of the sheet-sheet
    interface. Therefore, both CT-suitable tool materials and radiopaque materials
    are selected and experimentally investigated. In the clinching process, two aluminium
    sheets with radiopaque material in between are clinched in a single-step (rotationally
    symmetric joint without cut section). It is shown that e.g. silicon nitride is
    suited as tool material and a tin layer is suitable to enhance the detectability
    of the sheet-sheet interface.</jats:p>
author:
- first_name: Daniel
  full_name: Köhler, Daniel
  last_name: Köhler
- first_name: Robert
  full_name: Kupfer, Robert
  last_name: Kupfer
- first_name: Juliane
  full_name: Troschitz, Juliane
  last_name: Troschitz
- first_name: Maik
  full_name: Gude, Maik
  last_name: Gude
citation:
  ama: Köhler D, Kupfer R, Troschitz J, Gude M. Clinching in In-situ CT – Experimental
    Study on Suitable Tool Materials. <i>ESAFORM 2021</i>. Published online 2021.
    doi:<a href="https://doi.org/10.25518/esaform21.2781">10.25518/esaform21.2781</a>
  apa: Köhler, D., Kupfer, R., Troschitz, J., &#38; Gude, M. (2021). Clinching in
    In-situ CT – Experimental Study on Suitable Tool Materials. <i>ESAFORM 2021</i>.
    <a href="https://doi.org/10.25518/esaform21.2781">https://doi.org/10.25518/esaform21.2781</a>
  bibtex: '@article{Köhler_Kupfer_Troschitz_Gude_2021, title={Clinching in In-situ
    CT – Experimental Study on Suitable Tool Materials}, DOI={<a href="https://doi.org/10.25518/esaform21.2781">10.25518/esaform21.2781</a>},
    journal={ESAFORM 2021}, publisher={University of Liege}, author={Köhler, Daniel
    and Kupfer, Robert and Troschitz, Juliane and Gude, Maik}, year={2021} }'
  chicago: Köhler, Daniel, Robert Kupfer, Juliane Troschitz, and Maik Gude. “Clinching
    in In-situ CT – Experimental Study on Suitable Tool Materials.” <i>ESAFORM 2021</i>,
    2021. <a href="https://doi.org/10.25518/esaform21.2781">https://doi.org/10.25518/esaform21.2781</a>.
  ieee: 'D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “Clinching in In-situ CT
    – Experimental Study on Suitable Tool Materials,” <i>ESAFORM 2021</i>, 2021, doi:
    <a href="https://doi.org/10.25518/esaform21.2781">10.25518/esaform21.2781</a>.'
  mla: Köhler, Daniel, et al. “Clinching in In-situ CT – Experimental Study on Suitable
    Tool Materials.” <i>ESAFORM 2021</i>, University of Liege, 2021, doi:<a href="https://doi.org/10.25518/esaform21.2781">10.25518/esaform21.2781</a>.
  short: D. Köhler, R. Kupfer, J. Troschitz, M. Gude, ESAFORM 2021 (2021).
date_created: 2024-02-06T15:05:58Z
date_updated: 2025-06-02T20:20:21Z
department:
- _id: '157'
- _id: '43'
doi: 10.25518/esaform21.2781
language:
- iso: fre
project:
- _id: '130'
  grant_number: '418701707'
  name: 'TRR 285: TRR 285'
- _id: '133'
  name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
  name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: ESAFORM 2021
publication_status: published
publisher: University of Liege
status: public
title: Clinching in In-situ CT – Experimental Study on Suitable Tool Materials
type: journal_article
user_id: '83408'
year: '2021'
...