[{"date_created":"2025-08-06T06:53:27Z","publisher":"Elsevier BV","title":"Life cycle engineering of lightweight structures in vehicles for on-demand mobility services","quality_controlled":"1","year":"2025","language":[{"iso":"eng"}],"keyword":["Life cycle assessment","Life cycle engineering","Lightweight design","On-demand mobility","Shared mobility","Mobility services"],"publication":"Cleaner Engineering and Technology","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."}],"author":[{"first_name":"Moritz","full_name":"Ostermann, Moritz","id":"44763","orcid":"https://orcid.org/0000-0003-1146-0443","last_name":"Ostermann"},{"last_name":"Dierkes","full_name":"Dierkes, Eric","first_name":"Eric"},{"orcid":"0009-0001-6433-7839","last_name":"Marten","full_name":"Marten, Thorsten","id":"338","first_name":"Thorsten"},{"first_name":"Thomas","last_name":"Tröster","id":"553","full_name":"Tröster, Thomas"}],"volume":28,"oa":"1","date_updated":"2025-08-07T06:41:28Z","main_file_link":[{"open_access":"1","url":"https://www.sciencedirect.com/science/article/pii/S2666790825001818?via%3Dihub"}],"doi":"10.1016/j.clet.2025.101058","publication_status":"published","publication_identifier":{"issn":["2666-7908"]},"citation":{"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>.","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>.","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>","short":"M. Ostermann, E. Dierkes, T. Marten, T. Tröster, Cleaner Engineering and Technology 28 (2025).","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>.","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} }"},"intvolume":"        28","user_id":"44763","department":[{"_id":"9"},{"_id":"321"},{"_id":"149"}],"project":[{"grant_number":"19S23003Q","name":"NeMobil: NeMo.bil – System kooperierender Fahrzeuge für einen individualisierten Öffentlichen Verkehr","_id":"780"},{"name":"Climate bOWL: Climate bOWL: Climate neutral Business in Ostwestfalen-Lippe","_id":"405","grant_number":"005-2111-0020 "}],"_id":"60885","article_number":"101058","article_type":"original","type":"journal_article","status":"public"},{"language":[{"iso":"eng"}],"keyword":["Sustainable debonding","Structural adhesives","Sustainable joining technologies","Life Cycle Assessment (LCA)","Automotive repair process","Economically efficient debonding"],"publication":"Journal of Advanced Joining Processes","abstract":[{"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.","lang":"eng"}],"date_created":"2025-07-30T11:04:28Z","publisher":"Elsevier","title":"Comparison of the economic efficiency and sustainability of two debonding processes for structurally bonded sills","quality_controlled":"1","year":"2025","department":[{"_id":"157"},{"_id":"876"},{"_id":"321"},{"_id":"9"}],"user_id":"103302","_id":"60837","article_number":"100332","article_type":"original","type":"journal_article","status":"public","volume":12,"author":[{"full_name":"Jordan, Alex","id":"62451","last_name":"Jordan","orcid":"0009-0007-9546-6071","first_name":"Alex"},{"first_name":"Lucas","full_name":"Hermelingmeier, Lucas","id":"58649","last_name":"Hermelingmeier"},{"full_name":"Gilich, Julian","id":"44391","last_name":"Gilich","first_name":"Julian"},{"id":"32056","full_name":"Meschut, Gerson","last_name":"Meschut","orcid":"0000-0002-2763-1246","first_name":"Gerson"},{"id":"52239","full_name":"De Santis, Marco Sebastian","last_name":"De Santis","first_name":"Marco Sebastian"},{"first_name":"Alexander","last_name":"Schlüter","orcid":"0000-0002-2569-1624","full_name":"Schlüter, Alexander","id":"103302"}],"oa":"1","date_updated":"2026-01-06T08:22:54Z","doi":"10.1016/j.jajp.2025.100332","main_file_link":[{"open_access":"1","url":"https://www.sciencedirect.com/science/article/pii/S2666330925000536?via%3Dihub"}],"publication_identifier":{"issn":["2666-3309"]},"publication_status":"published","intvolume":"        12","citation":{"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>.","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>","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).","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} }","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>"}},{"status":"public","publication":"16th Biennial International Conference on EcoBalance","type":"conference_abstract","keyword":["Life Cycle Sustainability Assessment","Prospective Life Cycle Assessment","Life Cycle Engineering","On-Demand Mobility","Mobility Services"],"language":[{"iso":"eng"}],"_id":"57202","department":[{"_id":"9"},{"_id":"321"},{"_id":"149"}],"user_id":"44763","year":"2024","place":"Sendai, Japan","citation":{"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.","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} }","short":"M. Ostermann, T. Marten, T. Tröster, in: 16th Biennial International Conference on EcoBalance, Sendai, Japan, 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.","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.","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.","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."},"quality_controlled":"1","title":"Prospective Life Cycle Assessment of Lightweight Structures in Vehicles for On-Demand Mobility Systems","conference":{"start_date":"2024-11-03","name":"16th Biennial International Conference on EcoBalance","location":"Sendai, Japan","end_date":"2024-11-07"},"date_updated":"2025-03-13T09:24:24Z","author":[{"last_name":"Ostermann","orcid":"https://orcid.org/0000-0003-1146-0443","id":"44763","full_name":"Ostermann, Moritz","first_name":"Moritz"},{"last_name":"Marten","orcid":"0009-0001-6433-7839","id":"338","full_name":"Marten, Thorsten","first_name":"Thorsten"},{"last_name":"Tröster","id":"553","full_name":"Tröster, Thomas","first_name":"Thomas"}],"date_created":"2024-11-18T13:25:52Z"},{"year":"2023","intvolume":"        16","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>","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>.","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>.","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} }","short":"M. Ostermann, J. Grenz, M. Triebus, F. Cerdas, T. Marten, T. Tröster, C. Herrmann, Energies 16 (2023).","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>.","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>"},"quality_controlled":"1","publication_identifier":{"issn":["1996-1073"]},"publication_status":"published","issue":"8","title":"Integrating Prospective Scenarios in Life Cycle Engineering: Case Study of Lightweight Structures","doi":"10.3390/en16083371","main_file_link":[{"url":"https://www.mdpi.com/1996-1073/16/8/3371","open_access":"1"}],"publisher":"MDPI AG","date_updated":"2023-04-13T09:19:56Z","oa":"1","volume":16,"author":[{"last_name":"Ostermann","orcid":"https://orcid.org/0000-0003-1146-0443","full_name":"Ostermann, Moritz","id":"44763","first_name":"Moritz"},{"first_name":"Julian","last_name":"Grenz","full_name":"Grenz, Julian"},{"full_name":"Triebus, Marcel","id":"66036","last_name":"Triebus","first_name":"Marcel"},{"first_name":"Felipe","full_name":"Cerdas, Felipe","last_name":"Cerdas"},{"full_name":"Marten, Thorsten","id":"338","last_name":"Marten","first_name":"Thorsten"},{"last_name":"Tröster","full_name":"Tröster, Thomas","id":"553","first_name":"Thomas"},{"full_name":"Herrmann, Christoph","last_name":"Herrmann","first_name":"Christoph"}],"date_created":"2023-04-13T09:11:33Z","abstract":[{"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>","lang":"eng"}],"status":"public","publication":"Energies","type":"journal_article","keyword":["Life Cycle Engineering","Life Cycle Assessment","Lightweight Design","Prospective LCA","Future-oriented LCA","Energy System","Material production","Sustainable production"],"article_number":"3371","language":[{"iso":"eng"}],"_id":"43464","department":[{"_id":"9"},{"_id":"321"},{"_id":"149"}],"user_id":"44763"}]