---
_id: '58348'
abstract:
- lang: eng
  text: '<jats:p> Clinching is a mechanical joining technology, in which a mainly
    form-fit joint is created by means of local cold forming. To characterize the
    load-bearing behavior of such joints, they are typically analyzed destructively,
    for example by tensile-shear tests in combination with metallographic sections.
    However, both the initiation and progress of failure can only be described to
    a limited extent by this method. Furthermore, these tests allow only limited conclusions
    about clinch points under in-service loading. More purposefully, clinch points
    can be analyzed nondestructively by combining in-situ computed tomography (CT)
    and transient dynamic analysis (TDA). The TDA continuously measures the dynamic
    behavior of the specimen and indicates failure events like crack initiation, which
    then can be evaluated thoroughly by stopping the test and performing a CT scan.
    To qualify the TDA for this task, it is necessary to link the observed damage
    behavior with specific dynamic characteristics. In this work, the complementation
    of in-situ CT and TDA is investigated by testing a clinched single-lap tensile-shear
    specimen made of aluminum. The testing procedure is stepwise: at certain displacement
    levels, the specimen is investigated by in-situ CT and TDA. While the in-situ
    CT provides the location, extent, and development of the failure phenomena, the
    TDA uses this information to evaluate the dynamic signal and detect relevant frequency
    ranges, which indicate damage events. The results demonstrate, that failure initiation
    and progression can be analyzed efficiently by combining both measuring systems.
    The TDA reliably detects relevant signal changes in the monitored frequency band.
    By means of in-situ computed tomography, the corresponding failure phenomena can
    be described in detail, enhancing the understanding of the load-bearing and deformation
    behavior of clinch points. The concatenation of characteristic signal changes
    and observed failure phenomena can henceforth be transferred to analyze complex
    structures during operation nondestructively by TDA. </jats:p>'
article_type: original
author:
- first_name: Gregor
  full_name: Reschke, Gregor
  last_name: Reschke
- 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
- first_name: Alexander
  full_name: Brosius, Alexander
  last_name: Brosius
citation:
  ama: 'Reschke G, Köhler D, Kupfer R, Troschitz J, Gude M, Brosius A. In-situ computed
    tomography and transient dynamic analysis – failure analysis of a single-lap tensile-shear
    test with clinch points. <i>Proceedings of the Institution of Mechanical Engineers,
    Part E: Journal of Process Mechanical Engineering</i>. Published online 2024.
    doi:<a href="https://doi.org/10.1177/09544089241251646">10.1177/09544089241251646</a>'
  apa: 'Reschke, G., Köhler, D., Kupfer, R., Troschitz, J., Gude, M., &#38; Brosius,
    A. (2024). In-situ computed tomography and transient dynamic analysis – failure
    analysis of a single-lap tensile-shear test with clinch points. <i>Proceedings
    of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical
    Engineering</i>. <a href="https://doi.org/10.1177/09544089241251646">https://doi.org/10.1177/09544089241251646</a>'
  bibtex: '@article{Reschke_Köhler_Kupfer_Troschitz_Gude_Brosius_2024, title={In-situ
    computed tomography and transient dynamic analysis – failure analysis of a single-lap
    tensile-shear test with clinch points}, DOI={<a href="https://doi.org/10.1177/09544089241251646">10.1177/09544089241251646</a>},
    journal={Proceedings of the Institution of Mechanical Engineers, Part E: Journal
    of Process Mechanical Engineering}, publisher={SAGE Publications}, author={Reschke,
    Gregor and Köhler, Daniel and Kupfer, Robert and Troschitz, Juliane and Gude,
    Maik and Brosius, Alexander}, year={2024} }'
  chicago: 'Reschke, Gregor, Daniel Köhler, Robert Kupfer, Juliane Troschitz, Maik
    Gude, and Alexander Brosius. “In-Situ Computed Tomography and Transient Dynamic
    Analysis – Failure Analysis of a Single-Lap Tensile-Shear Test with Clinch Points.”
    <i>Proceedings of the Institution of Mechanical Engineers, Part E: Journal of
    Process Mechanical Engineering</i>, 2024. <a href="https://doi.org/10.1177/09544089241251646">https://doi.org/10.1177/09544089241251646</a>.'
  ieee: 'G. Reschke, D. Köhler, R. Kupfer, J. Troschitz, M. Gude, and A. Brosius,
    “In-situ computed tomography and transient dynamic analysis – failure analysis
    of a single-lap tensile-shear test with clinch points,” <i>Proceedings of the
    Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</i>,
    2024, doi: <a href="https://doi.org/10.1177/09544089241251646">10.1177/09544089241251646</a>.'
  mla: 'Reschke, Gregor, et al. “In-Situ Computed Tomography and Transient Dynamic
    Analysis – Failure Analysis of a Single-Lap Tensile-Shear Test with Clinch Points.”
    <i>Proceedings of the Institution of Mechanical Engineers, Part E: Journal of
    Process Mechanical Engineering</i>, SAGE Publications, 2024, doi:<a href="https://doi.org/10.1177/09544089241251646">10.1177/09544089241251646</a>.'
  short: 'G. Reschke, D. Köhler, R. Kupfer, J. Troschitz, M. Gude, A. Brosius, Proceedings
    of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical
    Engineering (2024).'
date_created: 2025-01-23T19:21:45Z
date_updated: 2025-01-23T19:32:03Z
department:
- _id: '43'
- _id: '157'
doi: 10.1177/09544089241251646
keyword:
- Clinching
- Non-destructive testing
- Transient Dynamic Analysis
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
project:
- _id: '133'
  name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
  name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: 'Proceedings of the Institution of Mechanical Engineers, Part E: Journal
  of Process Mechanical Engineering'
publication_identifier:
  issn:
  - 0954-4089
  - 2041-3009
publication_status: published
publisher: SAGE Publications
quality_controlled: '1'
status: public
title: In-situ computed tomography and transient dynamic analysis – failure analysis
  of a single-lap tensile-shear test with clinch points
type: journal_article
user_id: '98812'
year: '2024'
...
---
_id: '34212'
abstract:
- lang: eng
  text: "Force–displacement measurements and micrograph analyses are commonly used
    methods to validate numerical models of clinching processes. However, these methods
    often lead to resetting of elastic deformations and crack-\r\nclosing after unloading.
    In contrast, the in situ computed tomography (CT) can provide three-dimensional
    images of the clinch point under loading conditions. In this paper, the potential
    of the in situ investigation of a clinching process as validation method is analyzed.
    For the in situ testing, a tailored test set-up featuring a beryllium cylinder
    for load-bearing and clinching tools made from ultra-high-strength titanium and
    Si3N4 are used. In the experiments, the clinching of two aluminum sheets is interrupted
    at specific process steps in order to perform the CT scans. It is shown that in
    situ CT visualizes the inner geometry of the joint at high precision and that
    this method is suitable to validate numerical models."
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—A Novel Validation
    Method for Mechanical Joining Processes. In: <i>The Minerals, Metals &#38; Materials
    Series</i>. Springer International Publishing; 2022. doi:<a href="https://doi.org/10.1007/978-3-031-06212-4_75">10.1007/978-3-031-06212-4_75</a>'
  apa: Köhler, D., Kupfer, R., Troschitz, J., &#38; Gude, M. (2022). Clinching in
    In Situ CT—A Novel Validation Method for Mechanical Joining Processes. In <i>The
    Minerals, Metals &#38; Materials Series</i>. Springer International Publishing.
    <a href="https://doi.org/10.1007/978-3-031-06212-4_75">https://doi.org/10.1007/978-3-031-06212-4_75</a>
  bibtex: '@inbook{Köhler_Kupfer_Troschitz_Gude_2022, place={Cham}, title={Clinching
    in In Situ CT—A Novel Validation Method for Mechanical Joining Processes}, DOI={<a
    href="https://doi.org/10.1007/978-3-031-06212-4_75">10.1007/978-3-031-06212-4_75</a>},
    booktitle={The Minerals, Metals &#38; Materials Series}, publisher={Springer International
    Publishing}, author={Köhler, Daniel and Kupfer, Robert and Troschitz, Juliane
    and Gude, Maik}, year={2022} }'
  chicago: 'Köhler, Daniel, Robert Kupfer, Juliane Troschitz, and Maik Gude. “Clinching
    in In Situ CT—A Novel Validation Method for Mechanical Joining Processes.” In
    <i>The Minerals, Metals &#38; Materials Series</i>. Cham: Springer International
    Publishing, 2022. <a href="https://doi.org/10.1007/978-3-031-06212-4_75">https://doi.org/10.1007/978-3-031-06212-4_75</a>.'
  ieee: 'D. Köhler, R. Kupfer, J. Troschitz, and M. Gude, “Clinching in In Situ CT—A
    Novel Validation Method for Mechanical Joining Processes,” in <i>The Minerals,
    Metals &#38; Materials Series</i>, Cham: Springer International Publishing, 2022.'
  mla: Köhler, Daniel, et al. “Clinching in In Situ CT—A Novel Validation Method for
    Mechanical Joining Processes.” <i>The Minerals, Metals &#38; Materials Series</i>,
    Springer International Publishing, 2022, doi:<a href="https://doi.org/10.1007/978-3-031-06212-4_75">10.1007/978-3-031-06212-4_75</a>.
  short: 'D. Köhler, R. Kupfer, J. Troschitz, M. Gude, in: The Minerals, Metals &#38;
    Materials Series, Springer International Publishing, Cham, 2022.'
date_created: 2022-12-05T21:06:21Z
date_updated: 2022-12-05T21:11:47Z
doi: 10.1007/978-3-031-06212-4_75
keyword:
- Clinching
- Non-destructive testing
- Computed tomography
- In situ CT
language:
- iso: eng
place: Cham
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: The Minerals, Metals & Materials Series
publication_identifier:
  isbn:
  - '9783031062117'
  - '9783031062124'
  issn:
  - 2367-1181
  - 2367-1696
publication_status: published
publisher: Springer International Publishing
status: public
title: Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processes
type: book_chapter
user_id: '7850'
year: '2022'
...