---
_id: '60837'
abstract:
- lang: eng
  text: "In light of growing demands for resource efficiency and sustainability in
    vehicle engineering, the environmentally compatible separation of structural adhesive
    joints is gaining increasing relevance. This study presents a comparative analysis
    of two physically based debonding methods: the established hot-air process and
    a cryogenic cold process based on liquid nitrogen (LN2). The primary objective
    is to assess the ecological impact and process-related sustainability of both
    approaches.\r\nExperimental investigations were conducted on a component-representative
    triple-sheet structure that simulates common automotive flange joints. Thermal
    input was applied either by convective heating using a hot air gun or by direct
    cooling through a contact-based LN2 tool. The resulting temperature profiles were
    recorded using spatially distributed thermocouples. Subsequently, the outer panel
    was selectively debonded to replicate a repair scenario, and the mechanical integrity
    of the remaining adhesive joint was evaluated through Mode I testing of L-shaped
    specimens. Process data served as input for an Life Cycle Assessment (LCA) according
    to DIN EN ISO 14040.\r\nThe cryogenic method achieved a 40% reduction in carbon
    footprint compared to the hot-air process (0.337 kg vs. 0.559 kg CO2-equivalents),
    primarily due to its shorter process time and more efficient heat transfer. While
    the hot-air method’s impact is mainly driven by electrical energy use, that of
    the cold method stems from cryogenic media consumption. Notwithstanding certain
    disadvantages in specific impact categories, the LN2-based process exhibits a
    superior overall ecological performance and signifies a promising solution for
    repair- and recycling-oriented adhesive separation in structural vehicle applications."
article_number: '100332'
article_type: original
author:
- first_name: Alex
  full_name: Jordan, Alex
  id: '62451'
  last_name: Jordan
  orcid: 0009-0007-9546-6071
- first_name: Lucas
  full_name: Hermelingmeier, Lucas
  id: '58649'
  last_name: Hermelingmeier
- first_name: Julian
  full_name: Gilich, Julian
  id: '44391'
  last_name: Gilich
- first_name: Gerson
  full_name: Meschut, Gerson
  id: '32056'
  last_name: Meschut
  orcid: 0000-0002-2763-1246
- first_name: Marco Sebastian
  full_name: De Santis, Marco Sebastian
  id: '52239'
  last_name: De Santis
- first_name: Alexander
  full_name: Schlüter, Alexander
  id: '103302'
  last_name: Schlüter
  orcid: 0000-0002-2569-1624
citation:
  ama: Jordan A, Hermelingmeier L, Gilich J, Meschut G, De Santis MS, Schlüter A.
    Comparison of the economic efficiency and sustainability of two debonding processes
    for structurally bonded sills. <i>Journal of Advanced Joining Processes</i>. 2025;12.
    doi:<a href="https://doi.org/10.1016/j.jajp.2025.100332">10.1016/j.jajp.2025.100332</a>
  apa: Jordan, A., Hermelingmeier, L., Gilich, J., Meschut, G., De Santis, M. S.,
    &#38; Schlüter, A. (2025). Comparison of the economic efficiency and sustainability
    of two debonding processes for structurally bonded sills. <i>Journal of Advanced
    Joining Processes</i>, <i>12</i>, Article 100332. <a href="https://doi.org/10.1016/j.jajp.2025.100332">https://doi.org/10.1016/j.jajp.2025.100332</a>
  bibtex: '@article{Jordan_Hermelingmeier_Gilich_Meschut_De Santis_Schlüter_2025,
    title={Comparison of the economic efficiency and sustainability of two debonding
    processes for structurally bonded sills}, volume={12}, DOI={<a href="https://doi.org/10.1016/j.jajp.2025.100332">10.1016/j.jajp.2025.100332</a>},
    number={100332}, journal={Journal of Advanced Joining Processes}, publisher={Elsevier},
    author={Jordan, Alex and Hermelingmeier, Lucas and Gilich, Julian and Meschut,
    Gerson and De Santis, Marco Sebastian and Schlüter, Alexander}, year={2025} }'
  chicago: Jordan, Alex, Lucas Hermelingmeier, Julian Gilich, Gerson Meschut, Marco
    Sebastian De Santis, and Alexander Schlüter. “Comparison of the Economic Efficiency
    and Sustainability of Two Debonding Processes for Structurally Bonded Sills.”
    <i>Journal of Advanced Joining Processes</i> 12 (2025). <a href="https://doi.org/10.1016/j.jajp.2025.100332">https://doi.org/10.1016/j.jajp.2025.100332</a>.
  ieee: 'A. Jordan, L. Hermelingmeier, J. Gilich, G. Meschut, M. S. De Santis, and
    A. Schlüter, “Comparison of the economic efficiency and sustainability of two
    debonding processes for structurally bonded sills,” <i>Journal of Advanced Joining
    Processes</i>, vol. 12, Art. no. 100332, 2025, doi: <a href="https://doi.org/10.1016/j.jajp.2025.100332">10.1016/j.jajp.2025.100332</a>.'
  mla: Jordan, Alex, et al. “Comparison of the Economic Efficiency and Sustainability
    of Two Debonding Processes for Structurally Bonded Sills.” <i>Journal of Advanced
    Joining Processes</i>, vol. 12, 100332, Elsevier, 2025, doi:<a href="https://doi.org/10.1016/j.jajp.2025.100332">10.1016/j.jajp.2025.100332</a>.
  short: A. Jordan, L. Hermelingmeier, J. Gilich, G. Meschut, M.S. De Santis, A. Schlüter,
    Journal of Advanced Joining Processes 12 (2025).
date_created: 2025-07-30T11:04:28Z
date_updated: 2026-01-06T08:22:54Z
department:
- _id: '157'
- _id: '876'
- _id: '321'
- _id: '9'
doi: 10.1016/j.jajp.2025.100332
intvolume: '        12'
keyword:
- Sustainable debonding
- Structural adhesives
- Sustainable joining technologies
- Life Cycle Assessment (LCA)
- Automotive repair process
- Economically efficient debonding
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.sciencedirect.com/science/article/pii/S2666330925000536?via%3Dihub
oa: '1'
publication: Journal of Advanced Joining Processes
publication_identifier:
  issn:
  - 2666-3309
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Comparison of the economic efficiency and sustainability of two debonding processes
  for structurally bonded sills
type: journal_article
user_id: '103302'
volume: 12
year: '2025'
...