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Sunny start to the new semester (April 2023). Show image information

Sunny start to the new semester (April 2023).

Photo: Paderborn University, Besim Mazhiqi

Dr.-Ing. Thorsten Marten

Dr.-Ing. Thorsten Marten

Leichtbau im Automobil

Second Head - Academic Senior Councillor

+49 5251 60-5335
+49 5251 60-5333

Open list in Research Information System


Integrating Prospective Scenarios in Life Cycle Engineering: Case Study of Lightweight Structures

M. Ostermann, J. Grenz, M. Triebus, F. Cerdas, T. Marten, T. Tröster, C. Herrmann, Energies (2023), 16(8), 3371

<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>

NeMo.bil - Dekarbonisierung des Verkehrs mithilfe von Leichtbau-Fahrzeugschwärmen

M. Ostermann, J. Behm, T. Marten, T. Tröster. NeMo.bil - Dekarbonisierung des Verkehrs mithilfe von Leichtbau-Fahrzeugschwärmen. In: WerkstoffPlus Auto 13. Fachtagung für neue Fahrzeug- und Werkstoffkonzepte, Stuttgart, 2023.

Feasibility Study of Compression Molding for Large Reinforcement Structures in the Commercial Vehicle Sector

J. Lückenkötter, J. Leimbach, T. Stallmeister, T. Marten, T. Tröster, in: Materials Research Proceedings, Materials Research Forum LLC, 2023, pp. 249-258

<jats:p>Abstract. Due to an increasing volume of shipments, there is a significant need for more delivery vehicles. One approach to reduce the associated increase in carbon dioxide (CO2) emissions is a new light weight design approach involving the substitution of conventional materials with glass fiber mat-reinforced thermoplastics (GMT) based on polypropylene (PP). The application of GMT by compression molding is a widely used process in the automotive industry. However, application in the commercial vehicle sector requires much larger dimensions, making it necessary to clarify whether the manufacturing process and material are suitable for semi-structural applications on this scale. To find this out, two replacement geometries are abstracted in this study and manufactured by varying the main manufacturing parameters. The feasibility can be demonstrated by recording and analyzing the resulting process variables and measuring the formed fiber distribution. At the end of the paper, recommendations are given for the production of GMT structures on the scale of commercial vehicles. </jats:p>

Individualization of Public Transport – Integration of Technical and Social Dimensions of Sustainable Mobility

M. Ostermann, J. Behm, T. Marten, T. Tröster, J. Weyer, K. Cepera, F. Adelt, in: Towards the New Normal in Mobility, Springer Fachmedien Wiesbaden, 2023

In order to follow the 1.5 degree path of the Paris Climate Agreement, drastic greenhouse gas reduction measures are needed in the transport sector. The potential of public transport and new mobility services to reduce transport-related greenhouse gas emissions cannot yet be fully exploited, especially in rural regions. This paper presents the concept of an innovative mobility system, called NeMo.bil, that intends to fill the gap between individual and public transport to create a demand-oriented and sustainable mobility offer. The concept is based on convoy formation of autonomously driving lightweight vehicles serving the first and last mile and a larger towing vehicle carrying enough power and energy to move the convoy over longer distances at higher speeds. This combination of two different vehicles, intelligently controlled by a digital ecosystem, aims to significantly increasing energy, resource and cost efficiency. Based on an analysis of previous approaches for innovative mobility solutions, the concept is derived from a technical and sociological perspective and its potential for reducing energy demand is calculated.


Investigation on hot sheet metal forming by means of a longitudinal flux inductor

F. Pfeifer, T. Tröster, T. Marten, A. Dietrich, B. Nacke, G. Grundmeier, in: Proceedings of the 6th International Conference on Steels in Cars and Trucks, 2022

Individualisierung des ÖPNV - Integration technischer und sozialer Dimensionen nachhaltiger Mobilität

M. Ostermann, J. Behm, T. Marten, T. Tröster, J. Weyer, K. Cepera, F. Adelt. Individualisierung des ÖPNV - Integration technischer und sozialer Dimensionen nachhaltiger Mobilität. In: 14. Wissenschaftsforum Mobilität, Duisburg, 2022.


A new Device for Determination of Forming-Limit-Curves under Hot-Forming Conditions

M. Triebus, J. Gierse, T. Marten, T. Tröster, IOP Conference Series: Materials Science and Engineering (2021), 012052


Investigation on Inductive Heating of Sheet Metal for an Industrial Hot Stamping Process

F. Pfeifer, A. Dietrich, T. Marten, T. Tröster, B. Nacke, in: Proceedings of 7th International Conference on Hot Sheet Metal Forming of High-Performance Steel, 2019, pp. 585-593

Einsatz neuartiger Stähle und Generierung gradierter Leichtbaustrukturen im Presshärteprozess

T. Marten, T. Tröster, Forschungsvereinigung Stahlanwendung e.V. im Stahl Zentrum, P920, Verlag und Vertriebsgesellschaft mbH, 2019

Press Hardening Integrated Structuring for Hybrid Components

M. Triebus, S. Bienia, T. Marten, T. Tröster, K. Dröder, Verlag Wissenschaftliche Scripten, 2019


Effects of Holes in Blanks for Press Hardening Process due to Induction Heating

A. Dietrich, B. Nacke, F. Pfeifer, T. Marten, T. Tröster, 2017

Forming limit curves determined in high-speed Nakajima tests and predicted by a strain rate sensitive model

N. Weiß-Borkowski, J. Lian, T. Marten, T. Tröster, S. Münstermann, W. Bleck, in: Proceedings of The 20th International ESAFORM Conference on Material Forming: ESAFORM 2017, 2017



Partial hardening of new press hardenable steels

T. Marten, H. Block, T. Tröster, 2015

Multi-axial Material Testing at High Strain Rates in High Speed Cupping Tests

N. Weiß Borkowski, T. Marten, H. Block, T. Tröster, 2015


Crash performance of the new press hardenable steel 15MnB6

H. Block, T. Marten, N. Weiß Borkowski, T. Tröster, 2014


Graded Lightweight Structures Through Hot Forming

T. Marten, H. Block, T. Tröster, T. Gerber, S. Sikora, F. Lenze, 2013


Automobilleichtbau mit innovativen Werkstoffen und Prozessen

T. Tröster, T. Marten, D. Thomas, H. Block, C. Lauter, M. Thöne, Forschungsforum Paderborn (2012), 15(15/2012), pp. 30-38

P 850 – Wirbelbetterwärmung von Platinen für das Presshärten

T. Tröster, T. Marten, S. Adelbert, A. Kadim, Abschlussberichte Forschungsvereinigung Stahlanwendung e.V., Verlag und Vertriebsgesellschaft mbH, 2012


Automobilleichtbau durch höchstfeste Multimaterialsysteme

T. Marten, C. Lauter, T. Tröster, Ingenieurspiegel (2011), 2/2011, pp. 67-69

Höchstfeste Hybridwerkstoffe aus Stahl und Faserverbundkunststoffen

C. Lauter, M. Frantz, T. Marten, T. Tröster, G. Bach, G. Seliger, Konstruktion: Zeitschrift für Produktentwicklung und Ingenieur-Werkstoffe (2011)(09/2011)

Fluidized bed heating of blanks for the hot forming process

T. Marten, T. Tröster, S. Adelbert, A. Kadim, 2011

Untersuchung alternativer Erwärmungsverfahren für den Presshärteprozess

T. Marten, J. Niewel, T. Tröster, HTM Journal of Heat Treatment and Materials (2011), pp. 309-315



The Effect of Texture on the Fatigue Properties of Ultrafine-Grained Interstitial-Free Steel

T. Niendorf, T. Marten, H.J. Maier, I. Karaman, Materials Science Forum (2008), 584-586, pp. 864-869

<jats:p>The present paper reports on the effect of texture on the cyclic stress-strain response (CSSR) and the fatigue life of ultrafine-grained (UFG) interstitial-free (IF) steel. Tests in the lowcycle fatigue (LCF) regime were conducted on material that was processed by the equal channel angular extrusion (ECAE) technique along the so called “efficient” route 8E. This route has been shown to result in a homogeneous microstructure with a high fraction of high angle grain boundaries (HAGBs), which are beneficial for a stable CSSR. In addition, the evolution of the microstructure was characterized by means of electron optical techniques, including electron backscattered diffraction, and by X-Ray diffractometry. It was found that the initial texture of specimens cut from the ECAE billet along different orientations with respect to the extrusion direction (ED) has a substantial effect on the CSSR of the UFG IF steel. Furthermore, microscopy results indicated the notable influence of the last ECAE processing step on the evolution of damage in the material.</jats:p>

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