---
_id: '59483'
abstract:
- lang: eng
  text: <jats:p>Abstract. The assessment of mechanically joined connections, such
    as clinched connections, is usually conducted destructively. Applicable non-destructive
    testing methods like computed tomography are time-consuming and costly, or, like
    electrical resistance measurement, provide only a limited amount of information.
    A fast, non-destructive evaluation of the joints condition shall be made possible
    by using transient dynamic analysis (TDA). It is based on the introduction of
    sound waves and the evaluation of the response behavior after passing through
    the structure. This study focuses the application of TDA to clinched shear connections
    to evaluate the performance of the tactile measuring setup. Twenty-one series
    were investigated, covering variations in joining task, manufacturing and defect.
    The evaluation was carried out using machine learning to determine for which series
    characteristic signals may be detected. It was shown that a classification of
    the investigated specimens is possible, whereby the classification accuracy depends
    on the examined variation. Furthermore, the accuracy was evaluated as a function
    of frequency and results were concluded to identify the limits of the used measuring
    setup.</jats:p>
author:
- first_name: Gregor
  full_name: Reschke, Gregor
  last_name: Reschke
- first_name: Alexander
  full_name: Brosius, Alexander
  last_name: Brosius
citation:
  ama: 'Reschke G, Brosius A. Transient dynamic analysis: Performance evaluation of
    tactile measurement. In: <i>Materials Research Proceedings</i>. Vol 52. Materials
    Research Forum LLC; 2025:293-300. doi:<a href="https://doi.org/10.21741/9781644903551-36">10.21741/9781644903551-36</a>'
  apa: 'Reschke, G., &#38; Brosius, A. (2025). Transient dynamic analysis: Performance
    evaluation of tactile measurement. <i>Materials Research Proceedings</i>, <i>52</i>,
    293–300. <a href="https://doi.org/10.21741/9781644903551-36">https://doi.org/10.21741/9781644903551-36</a>'
  bibtex: '@inproceedings{Reschke_Brosius_2025, title={Transient dynamic analysis:
    Performance evaluation of tactile measurement}, volume={52}, DOI={<a href="https://doi.org/10.21741/9781644903551-36">10.21741/9781644903551-36</a>},
    booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
    LLC}, author={Reschke, Gregor and Brosius, Alexander}, year={2025}, pages={293–300}
    }'
  chicago: 'Reschke, Gregor, and Alexander Brosius. “Transient Dynamic Analysis: Performance
    Evaluation of Tactile Measurement.” In <i>Materials Research Proceedings</i>,
    52:293–300. Materials Research Forum LLC, 2025. <a href="https://doi.org/10.21741/9781644903551-36">https://doi.org/10.21741/9781644903551-36</a>.'
  ieee: 'G. Reschke and A. Brosius, “Transient dynamic analysis: Performance evaluation
    of tactile measurement,” in <i>Materials Research Proceedings</i>, Paderborn,
    2025, vol. 52, pp. 293–300, doi: <a href="https://doi.org/10.21741/9781644903551-36">10.21741/9781644903551-36</a>.'
  mla: 'Reschke, Gregor, and Alexander Brosius. “Transient Dynamic Analysis: Performance
    Evaluation of Tactile Measurement.” <i>Materials Research Proceedings</i>, vol.
    52, Materials Research Forum LLC, 2025, pp. 293–300, doi:<a href="https://doi.org/10.21741/9781644903551-36">10.21741/9781644903551-36</a>.'
  short: 'G. Reschke, A. Brosius, in: Materials Research Proceedings, Materials Research
    Forum LLC, 2025, pp. 293–300.'
conference:
  end_date: 2025-04-03
  location: Paderborn
  name: 21st SheMet Conference
  start_date: 2025-04-01
date_created: 2025-04-10T11:27:20Z
date_updated: 2025-04-10T11:33:28Z
department:
- _id: '43'
- _id: '157'
doi: 10.21741/9781644903551-36
intvolume: '        52'
keyword:
- Joining
- Machine Learning
- Transient Dynamic Analysis
language:
- iso: eng
page: 293-300
project:
- _id: '130'
  grant_number: '418701707'
  name: 'TRR 285: TRR 285:  Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
    Prozessketten'
- _id: '133'
  name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '148'
  name: 'TRR 285 – C04: TRR 285 - Subproject C04'
publication: Materials Research Proceedings
publication_identifier:
  issn:
  - 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: 'Transient dynamic analysis: Performance evaluation of tactile measurement'
type: conference
user_id: '98812'
volume: 52
year: '2025'
...
---
_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'
...