---
_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'
...
---
_id: '60885'
abstract:
- lang: eng
  text: To reduce transport-related environmental impacts, innovative mobility system
    approaches such as on-demand services are being developed. These can include operating
    vehicles that differ regarding their characteristics and application profile from
    privately owned cars in motorized individual transport. Studies on life cycle
    assessment and life cycle engineering of vehicle lightweight structures are mainly
    limited to these privately owned cars and the impact category of climate change.
    In this paper, a method for life cycle assessment-based engineering of lightweight
    structures in vehicles for various mobility system applications, including on-demand
    mobility services, is developed. The method enables the holistic life cycle assessment
    of lightweight structures in different mobility system applications considering
    parameter changes at the upstream products, component, subsystem, vehicle and
    mobility system levels, as well as the integration of results into engineering
    activities. A case study is used to show that the vehicle and mobility system
    application of lightweight structures can significantly influence their environmental
    impacts and the selection of ecologically preferable product designs. The application
    in vehicles for on-demand mobility services can lead to an increase in absolute
    use stage energy demand and environmental impacts compared to applications in
    privately owned vehicles for motorized individual transport. However, normalized
    to the transport performance provided, the lifecycle environmental impacts of
    structural components in vehicles for on-demand mobility services can be lower
    than in vehicles for motorized individual transport. The paper contributes methodically
    and with quantitative results to improved decision making in life cycle engineering
    activities for lightweight structures in mobility system applications.
article_number: '101058'
article_type: original
author:
- first_name: Moritz
  full_name: Ostermann, Moritz
  id: '44763'
  last_name: Ostermann
  orcid: https://orcid.org/0000-0003-1146-0443
- first_name: Eric
  full_name: Dierkes, Eric
  last_name: Dierkes
- first_name: Thorsten
  full_name: Marten, Thorsten
  id: '338'
  last_name: Marten
  orcid: 0009-0001-6433-7839
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
citation:
  ama: Ostermann M, Dierkes E, Marten T, Tröster T. Life cycle engineering of lightweight
    structures in vehicles for on-demand mobility services. <i>Cleaner Engineering
    and Technology</i>. 2025;28. doi:<a href="https://doi.org/10.1016/j.clet.2025.101058">10.1016/j.clet.2025.101058</a>
  apa: Ostermann, M., Dierkes, E., Marten, T., &#38; Tröster, T. (2025). Life cycle
    engineering of lightweight structures in vehicles for on-demand mobility services.
    <i>Cleaner Engineering and Technology</i>, <i>28</i>, Article 101058. <a href="https://doi.org/10.1016/j.clet.2025.101058">https://doi.org/10.1016/j.clet.2025.101058</a>
  bibtex: '@article{Ostermann_Dierkes_Marten_Tröster_2025, title={Life cycle engineering
    of lightweight structures in vehicles for on-demand mobility services}, volume={28},
    DOI={<a href="https://doi.org/10.1016/j.clet.2025.101058">10.1016/j.clet.2025.101058</a>},
    number={101058}, journal={Cleaner Engineering and Technology}, publisher={Elsevier
    BV}, author={Ostermann, Moritz and Dierkes, Eric and Marten, Thorsten and Tröster,
    Thomas}, year={2025} }'
  chicago: Ostermann, Moritz, Eric Dierkes, Thorsten Marten, and Thomas Tröster. “Life
    Cycle Engineering of Lightweight Structures in Vehicles for On-Demand Mobility
    Services.” <i>Cleaner Engineering and Technology</i> 28 (2025). <a href="https://doi.org/10.1016/j.clet.2025.101058">https://doi.org/10.1016/j.clet.2025.101058</a>.
  ieee: 'M. Ostermann, E. Dierkes, T. Marten, and T. Tröster, “Life cycle engineering
    of lightweight structures in vehicles for on-demand mobility services,” <i>Cleaner
    Engineering and Technology</i>, vol. 28, Art. no. 101058, 2025, doi: <a href="https://doi.org/10.1016/j.clet.2025.101058">10.1016/j.clet.2025.101058</a>.'
  mla: Ostermann, Moritz, et al. “Life Cycle Engineering of Lightweight Structures
    in Vehicles for On-Demand Mobility Services.” <i>Cleaner Engineering and Technology</i>,
    vol. 28, 101058, Elsevier BV, 2025, doi:<a href="https://doi.org/10.1016/j.clet.2025.101058">10.1016/j.clet.2025.101058</a>.
  short: M. Ostermann, E. Dierkes, T. Marten, T. Tröster, Cleaner Engineering and
    Technology 28 (2025).
date_created: 2025-08-06T06:53:27Z
date_updated: 2025-08-07T06:41:28Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: 10.1016/j.clet.2025.101058
intvolume: '        28'
keyword:
- Life cycle assessment
- Life cycle engineering
- Lightweight design
- On-demand mobility
- Shared mobility
- Mobility services
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.sciencedirect.com/science/article/pii/S2666790825001818?via%3Dihub
oa: '1'
project:
- _id: '780'
  grant_number: 19S23003Q
  name: 'NeMobil: NeMo.bil – System kooperierender Fahrzeuge für einen individualisierten
    Öffentlichen Verkehr'
- _id: '405'
  grant_number: '005-2111-0020 '
  name: 'Climate bOWL: Climate bOWL: Climate neutral Business in Ostwestfalen-Lippe'
publication: Cleaner Engineering and Technology
publication_identifier:
  issn:
  - 2666-7908
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Life cycle engineering of lightweight structures in vehicles for on-demand
  mobility services
type: journal_article
user_id: '44763'
volume: 28
year: '2025'
...
---
_id: '57202'
author:
- first_name: Moritz
  full_name: Ostermann, Moritz
  id: '44763'
  last_name: Ostermann
  orcid: https://orcid.org/0000-0003-1146-0443
- first_name: Thorsten
  full_name: Marten, Thorsten
  id: '338'
  last_name: Marten
  orcid: 0009-0001-6433-7839
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
citation:
  ama: 'Ostermann M, Marten T, Tröster T. Prospective Life Cycle Assessment of Lightweight
    Structures in Vehicles for On-Demand Mobility Systems. In: <i>16th Biennial International
    Conference on EcoBalance</i>. ; 2024.'
  apa: Ostermann, M., Marten, T., &#38; Tröster, T. (2024). Prospective Life Cycle
    Assessment of Lightweight Structures in Vehicles for On-Demand Mobility Systems.
    <i>16th Biennial International Conference on EcoBalance</i>. 16th Biennial International
    Conference on EcoBalance, Sendai, Japan.
  bibtex: '@inproceedings{Ostermann_Marten_Tröster_2024, place={Sendai, Japan}, title={Prospective
    Life Cycle Assessment of Lightweight Structures in Vehicles for On-Demand Mobility
    Systems}, booktitle={16th Biennial International Conference on EcoBalance}, author={Ostermann,
    Moritz and Marten, Thorsten and Tröster, Thomas}, year={2024} }'
  chicago: Ostermann, Moritz, Thorsten Marten, and Thomas Tröster. “Prospective Life
    Cycle Assessment of Lightweight Structures in Vehicles for On-Demand Mobility
    Systems.” In <i>16th Biennial International Conference on EcoBalance</i>. Sendai,
    Japan, 2024.
  ieee: M. Ostermann, T. Marten, and T. Tröster, “Prospective Life Cycle Assessment
    of Lightweight Structures in Vehicles for On-Demand Mobility Systems,” presented
    at the 16th Biennial International Conference on EcoBalance, Sendai, Japan, 2024.
  mla: Ostermann, Moritz, et al. “Prospective Life Cycle Assessment of Lightweight
    Structures in Vehicles for On-Demand Mobility Systems.” <i>16th Biennial International
    Conference on EcoBalance</i>, 2024.
  short: 'M. Ostermann, T. Marten, T. Tröster, in: 16th Biennial International Conference
    on EcoBalance, Sendai, Japan, 2024.'
conference:
  end_date: 2024-11-07
  location: Sendai, Japan
  name: 16th Biennial International Conference on EcoBalance
  start_date: 2024-11-03
date_created: 2024-11-18T13:25:52Z
date_updated: 2025-03-13T09:24:24Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
keyword:
- Life Cycle Sustainability Assessment
- Prospective Life Cycle Assessment
- Life Cycle Engineering
- On-Demand Mobility
- Mobility Services
language:
- iso: eng
place: Sendai, Japan
publication: 16th Biennial International Conference on EcoBalance
quality_controlled: '1'
status: public
title: Prospective Life Cycle Assessment of Lightweight Structures in Vehicles for
  On-Demand Mobility Systems
type: conference_abstract
user_id: '44763'
year: '2024'
...
---
_id: '43464'
abstract:
- lang: eng
  text: <jats:p>Lightweight design is a common approach to reduce energy demand in
    the use stage of vehicles. The production of lightweight materials is usually
    associated with an increase in energy demand, so the environmental impacts of
    lightweight structures need to be assessed holistically using a life cycle assessment.
    To estimate the life cycle environmental impacts of a product in its developmental
    stage, for example, by life cycle engineering, future changes in relevant influencing
    factors must be considered. Prospective life cycle assessment provides methods
    for integrating future scenarios into life cycle assessment studies. However,
    approaches for integrating prospective life cycle assessment into product development
    are limited. The objective of this work is to provide the methodological foundation
    for integrating future scenarios of relevant influencing factors in the development
    of lightweight structures. The applicability of the novel methodology is demonstrated
    by a case study of a structural component in a steel, aluminium, and hybrid design.
    The results show that appropriate decarbonisation measures can reduce the life
    cycle greenhouse gas emissions by up to 95 percent until 2050. We also found that
    shifts in the environmentally optimal design are possible in future scenarios.
    Therefore, the methodology and data provided contribute to improved decision-making
    in product development.</jats:p>
article_number: '3371'
author:
- first_name: Moritz
  full_name: Ostermann, Moritz
  id: '44763'
  last_name: Ostermann
  orcid: https://orcid.org/0000-0003-1146-0443
- first_name: Julian
  full_name: Grenz, Julian
  last_name: Grenz
- first_name: Marcel
  full_name: Triebus, Marcel
  id: '66036'
  last_name: Triebus
- first_name: Felipe
  full_name: Cerdas, Felipe
  last_name: Cerdas
- first_name: Thorsten
  full_name: Marten, Thorsten
  id: '338'
  last_name: Marten
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
- first_name: Christoph
  full_name: Herrmann, Christoph
  last_name: Herrmann
citation:
  ama: 'Ostermann M, Grenz J, Triebus M, et al. Integrating Prospective Scenarios
    in Life Cycle Engineering: Case Study of Lightweight Structures. <i>Energies</i>.
    2023;16(8). doi:<a href="https://doi.org/10.3390/en16083371">10.3390/en16083371</a>'
  apa: 'Ostermann, M., Grenz, J., Triebus, M., Cerdas, F., Marten, T., Tröster, T.,
    &#38; Herrmann, C. (2023). Integrating Prospective Scenarios in Life Cycle Engineering:
    Case Study of Lightweight Structures. <i>Energies</i>, <i>16</i>(8), Article 3371.
    <a href="https://doi.org/10.3390/en16083371">https://doi.org/10.3390/en16083371</a>'
  bibtex: '@article{Ostermann_Grenz_Triebus_Cerdas_Marten_Tröster_Herrmann_2023, title={Integrating
    Prospective Scenarios in Life Cycle Engineering: Case Study of Lightweight Structures},
    volume={16}, DOI={<a href="https://doi.org/10.3390/en16083371">10.3390/en16083371</a>},
    number={83371}, journal={Energies}, publisher={MDPI AG}, author={Ostermann, Moritz
    and Grenz, Julian and Triebus, Marcel and Cerdas, Felipe and Marten, Thorsten
    and Tröster, Thomas and Herrmann, Christoph}, year={2023} }'
  chicago: 'Ostermann, Moritz, Julian Grenz, Marcel Triebus, Felipe Cerdas, Thorsten
    Marten, Thomas Tröster, and Christoph Herrmann. “Integrating Prospective Scenarios
    in Life Cycle Engineering: Case Study of Lightweight Structures.” <i>Energies</i>
    16, no. 8 (2023). <a href="https://doi.org/10.3390/en16083371">https://doi.org/10.3390/en16083371</a>.'
  ieee: 'M. Ostermann <i>et al.</i>, “Integrating Prospective Scenarios in Life Cycle
    Engineering: Case Study of Lightweight Structures,” <i>Energies</i>, vol. 16,
    no. 8, Art. no. 3371, 2023, doi: <a href="https://doi.org/10.3390/en16083371">10.3390/en16083371</a>.'
  mla: 'Ostermann, Moritz, et al. “Integrating Prospective Scenarios in Life Cycle
    Engineering: Case Study of Lightweight Structures.” <i>Energies</i>, vol. 16,
    no. 8, 3371, MDPI AG, 2023, doi:<a href="https://doi.org/10.3390/en16083371">10.3390/en16083371</a>.'
  short: M. Ostermann, J. Grenz, M. Triebus, F. Cerdas, T. Marten, T. Tröster, C.
    Herrmann, Energies 16 (2023).
date_created: 2023-04-13T09:11:33Z
date_updated: 2023-04-13T09:19:56Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: 10.3390/en16083371
intvolume: '        16'
issue: '8'
keyword:
- Life Cycle Engineering
- Life Cycle Assessment
- Lightweight Design
- Prospective LCA
- Future-oriented LCA
- Energy System
- Material production
- Sustainable production
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.mdpi.com/1996-1073/16/8/3371
oa: '1'
publication: Energies
publication_identifier:
  issn:
  - 1996-1073
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: 'Integrating Prospective Scenarios in Life Cycle Engineering: Case Study of
  Lightweight Structures'
type: journal_article
user_id: '44763'
volume: 16
year: '2023'
...