Curriculum Vitae

since 05/2020	Postdoc at the Institute of Engineering Mechanics, Chair for Continuum Mechanics, Karlsruhe Institute of Technology (KIT)
12/2018-11/2019	Doctorate at the Institute of Engineering Mechanics, Chair for Continuum Mechanics, KIT; Dissertation: Thermomechanical Mean-Field Modeling and Experimental Characterization of Long Fiber-Reinforced Sheet Molding Compound Composites
10/2014-11/2019	Scientific employee, Institute of Engineering Mechanics, Chair for Continuum Mechanics, Karlsruhe Institute of Technology (KIT)
01/2014–05/2014	Master Thesis "Thermomechanische Homogenisierung kurzfaserverstärkter Verbundwerkstoffe mittels der Selbstkonsistenzmethode", KIT
04/2012–09/2014	Studies of Engineering Mechanics (Master), Karlsruhe Institute of Technology (KIT)
09/2011–02/2012	Internship in the field of Model-supported product development, Robert Bosch GmbH, Bühl
04/2011-07/2011	Bacherlor Thesis "Untersuchung des Einflusses der Muskeldynamik auf die Stabilität periodischer Lösungen beim Hüpfen", KIT
10/2008–03/2012	Studies of Engineering Mechanics (Bachelor), Karlsruhe Institute of Technology (KIT)

Fields of Research

Micromechanics of fibre reinforced materials
Experimental characterization of polymer-based materials: hydrothermal influences on the mechanical behavior of PA6 and viscoelastic material modeling

Publications

Linear and nonlinear thermoviscoelastic behavior of polyamide 6
Keursten, J.; Kehrer, L.; Böhlke, T.
2023. PAMM, 22 (1), Art.-Nr.: e202200145. doi:10.1002/pamm.202200145

Dynamic mechanical analysis of PA 6 under hydrothermal influences and viscoelastic material modeling
Kehrer, L.; Keursten, J.; Hirschberg, V.; Böhlke, T.
2023. Journal of Thermoplastic Composite Materials. doi:10.1177/08927057231155864

Nonlinear Schapery viscoelastic material model for thermoplastic polymers
Zink, T.; Kehrer, L.; Hirschberg, V.; Wilhelm, M.; Böhlke, T.
2022. Journal of Applied Polymer Science, 139 (12), Art.-Nr. 52028. doi:10.1002/app.52028

On the effective elastic properties based on mean-field homogenization of sheet molding compound composites
Trauth, A.; Kehrer, L.; Pinter, P.; Weidenmann, K.; Böhlke, T.
2021. Composites / C: Open Access, 4, Art.Nr. 100089. doi:10.1016/j.jcomc.2020.100089

Mean-field homogenization of thermoelastic material properties of a long fiber-reinforced thermoset and experimental investigation
Kehrer, L.; Wood, J. T.; Böhlke, T.
2020. Journal of composite materials, 54 (25), 3777–3799. doi:10.1177/0021998320920695

Dynamic mechanical analysis of pure and fiber-reinforced thermoset- and thermoplastic-based polymers and free volume-based viscoelastic modeling
Kehrer, L.; Wicht, D.; Wood, J. T.; Böhlke, T.
2018. GAMM-Mitteilungen, 41 (1), e201800007. doi:10.1002/gamm.201800007

Comparison and error estimation of 3D fibre orientation analysis of computed tomography image data for fibre reinforced composites
Pinter, P.; Dietrich, S.; Bertram, B.; Kehrer, L.; Elsner, P.; Weidenmann, K. A.
2018. NDT & E international, 95, 26–35. doi:10.1016/j.ndteint.2018.01.001

Mean and full field homogenization of artificial long fiber reinforced thermoset polymers
Kehrer, L.; Pinter, P.; Böhlke, T.
2017. Proceedings in applied mathematics and mechanics, 17 (1), 603–604. doi:10.1002/pamm.201710271

Mean field homogenization and experimental investigation of short and long fiber reinforced polymers
Kehrer, L.; Pinter, P.; Böhlke, T.
2016. Proceedings in applied mathematics and mechanics, 16 (1), 531–532. doi:10.1002/pamm.201610254

Homogenization of temperature-dependent short fiber reinforced polypropylen and experimental investigations of long fiber reinforced vinylester
Kehrer, L.; Pinter, P.; Böhlke, T.
2016. Proceedings of the 17th European Conference on Composite Materials (ECCM17), München, Germany, 26.-30.06.2016, European Society for Composite Materials (ESCM)

Experimental investigation and approximation of the temperature-dependent stiffness of short-fiber reinforced polymers
Kehrer, L.; Müller, V.; Brylka, B.; Böhlke, T.
2015. Proceedings in applied mathematics and mechanics, 15 (1), 453–454. doi:10.1002/pamm.201510217

Conferences

Talks

2023

Dyck, A., Groß, L., Kehrer, L., Keursten, J., Böhlke, T.:
Moisture diffusion in Polyamide 6
16^th International Conference on Advanced Computational Engineering and Experimenting, Heraklion, Greece, 03.07. - 07.07.2023

Kehrer L., Dyck A., Keursten J., Hirschberg V., Groß L., Böhlke T.:
Viscoelastic modeling of PA 6 under hydrothermal influences
MathSEE Symposium 2023, Karlsruhe, Germany, 27.09.-29.09.2023

Kehrer, L., Keursten, J., Hirschberg, V., Böhlke, T.:
Dynamic mechanical analysis and viscoelastic material modeling of hydrothermal influences on PA 6
16^th International Conference on Advanced Computational Engineering and Experimenting, Heraklion, Greece, 03.07. - 07.07.2023

Kehrer, L., Keurstern, J., Hirschberg, V., Böhlke, T.:
Hydrothermal influences on the mechanical behavior of PA 6
IRTG/ICRG 2023 Summer School, Berlin, Germany, 19.06.-23.06.2023

Kehrer, L., Keursten, J., Hirschberg, V., Dyck, A., Groß, L., Böhlke, T.
Hydrothermal influences on PA 6 - dynamic mechanical analysis and viscoelastic material modeling
93rd Annual Meeting of GAMM, Dresden, Germany, 30.05. – 02.06.2023
Invited talk as Topical Speaker

Keursten, J., Kehrer, L., Fischlschweiger, M., Enders, S., Böhlke, T.:
Micromechanical modeling of Polyamide 6
16^th International Conference on Advanced Computational Engineering and Experimenting, Heraklion, Greece, 03.07. - 07.07.2023

2022

Keursten, J., Kehrer, L., Böhlke, T.
Temperature- and humidity-dependent viscoelastic behavior of thermoplastics
9th GACM Colloquium on Computational Mechanics 2022, Essen, Germany, 21.09. - 23.09.2022

Keursten, J., Kehrer, L., Böhlke, T.
Linear and nonlinear thermoviscoelastic behavior of Polyamide 6
92nd Annual Meeting of GAMM, Aachen, Germany, 15. - 19.08.2022

Kehrer, L., Keursten, J., Hirschberg, V., Böhlke, T.
Thermoviscoelastic material behavior of Polyamide 6 at different humidity levels
92nd Annual Meeting of GAMM, Aachen, Germany, 15.08.-19.08.2022

Kehrer, L., Zink, T., Hirschberg, V., Wilhelm, M., Böhlke, T.:
Nonlinear Schapery viscoelastic material model for thermoplastic polymers,
ECCOMAS Congress 2022, Oslo, Norway, 05.06.-09.06.2022

2018

Kehrer, L., Pinter, P., Weidenmann, K., Böhlke, T.:
Thermoelastic homogenization and experimental investigations of a thermoset-based long fiber reinforced composite,
ECCM - ECFD, Glasgow, UK, 11.-15.06.2018

2017

Kehrer, L., Böhlke, T.:
Mean and full field simulations based on real microstructures and comparison with experimental data for UPPH,
GeoDict User Meeting, Kaiserslautern, Germany, 26.-27.09.2017

Kehrer, L., Böhlke, T.:
Effective thermoelastic material properties and experimental investigations of pure and fiber reinforced SMC,
2nd Annual ICRC/IRTG Summer Workshop and Symposium on Composite Materials, London, Canada, 17.-21.07.2017

Kehrer, L., Pinter, P., Böhlke, T.:
Effective thermoelastic material properties and experimental investigations of pure and fiber reinforced UPPH,
5th International Conference on Material Modeling (ICMM5), Rome, Italy, 14.-16.06.2017

Kehrer, L., Pinter, P., Weidenmann, K., Böhlke, T.:
A mechanical and μCT-based microstructure characterization of SMC and prediction of material properties using mean and full field simulations,
GAMM AG Data Workshop 2017, Karlsruhe, Germany, 18.-19.05.2017

Kehrer, L., Pinter, P., Böhlke, T.:
Homogenization and experimental investigations of pure and fiber reinforced UPPH,
88th Annual Meeting of GAMM, Weimar, Germany, 06.-10.03.2017

2016

Kehrer, L., Böhlke, T.:
Homogenization and experimental investigations of DiCoFRP,
IRTG Summer School, Karlsruhe, Germany, 06.-07.07.2016

Kehrer, L., Pinter, P., Böhlke, T.:
Homogenization of temperature-dependent short fiber reinforced polypropylen and experimental investigations of long fiber reinforced vinylester,
ECCM 17, München, Germany, 26.-30.06.2016

Kehrer, L., Pinter, P., Böhlke, T.:
Mean field homogenization of long fiber reinforced polymers and comparison with a full field approach,
DMV-GAMM 2016, Braunschweig, Germany, 07.-11.03.2016

Böhlke, T., Brylka, B., Buck, F., Kehrer, L., Müller, V., Priesnitz, K., Schemmann, M.:
Micromechanical and mean ﬁeld modeling of short and long ﬁber reinforced polymers,
Magdeburger Mechanik Kolloquium, March 11, 2016

Böhlke, T., Bertóti, R., Brylka, B., Buck, F., Kehrer, L., Müller, V., Priesnitz, K., Schemmann, M.:
Micromechanical Modeling of Fiber Reinforced Polymers,
ELACTAM 2016, Havana, February 22-24, 2016

2015

Kehrer, L., Müller, V., Böhlke, T.:
Thermoelastic homogenization of temperature-dependent material properties of short fiber reinforced polymers and application to long fiber reinforced thermosets,
28. Workshop, Composite Forschung in der Mechanik, Paderborn, Germany, 10.12.2015

Kehrer, L., Müller, V., Brylka, B., Böhlke, T.:
Homogenization of thermoelastic properties of short-fiber reinforced polymers and validation based on experimental characterization,
12th International Conference on the Mechanical Behavior of Materials (ICM12), Karlsruhe, Germany, 12.05.2015

Kehrer, L., Müller, V., Brylka, B., Böhlke, T.:
Experimental investigation and approximation of the temperature-dependent stiffness of short-fiber reinforced polymers,
GAMM Conference 2015, Lecce, Italy, 27.03.2015

Schemmann, M., Brylka, B., Müller, V., Kehrer, M., Böhlke, T.:
Mean Field Homogenization of Discontinuous Fiber Reinforced Polymers and Parameter Identification of Biaxial Tensile Tests through Inverse Modeling,
20th International Conference on Composite Materials, Copenhagen, Denmark, 22.07.2015

Academic Teaching

Lectures

Sommer Semester 2023

Experimentelle Charakterisierung thermoviskoelastischer Materialien (Lecture)
Subsitute Lecturer in selected lectures in Technische Mechanik II

Winter Semester 2022/2023

Subsitute Lecturer in selected lectures in Technische Mechanik I
Übungen zu Engineering Mechanics I

Sommer Semester 2022

Tutorial in Engineering Mechanics II
Lecturer in Mathematische Methoden der Mikromechanik (MMM)

Winter Semester 2021/2022

Tutorial Engineering Mechanics I

Sommer Semester 2021

Lecturer in Mathematische Methoden der Mikromechanik (MMM)
Tutorial Engineering Mechanics II

Winter Semester 2020/2021

Tutorial Engineering Mechanics I

Summer Semester 2019

Tutorial in Mathematische Methoden der Strukturmechanik (MMS)
Consultation Hour Mathematische Methoden der Strukturmechanik (MMS)
Computer Tutorial for the Finite-Element-Methode (FEM)

Winter Semester 2018/19

Tutorial for Höhere Technische Festigkeitslehre (HTF)

Summer Semester 2018

Subsitute Lecturer in selected lectures in Mathematischen Methoden der Strukturmechanik (MMS)
Übungen zu Mathematische Methoden der Strukturmechanik (MMS)
Consultation Hour Mathematische Methoden der Strukturmechanik (MMS)

Winter Semester 2017/18

Engineering Mechanics I (EMI) - Tutorial
Group Tutorial for Engineering Mechanics I (EMI)
Group Tutorial for Computational Problems Engineering Mechanics I (EMI)
Computer Tutorial Höhere Technische Festigkeitslehre (HTF)
Consultation Hour Höhere Technische Festigkeitslehre (HTF)

Summer Semester 2017

Computer Seminar Technische Mechanik II (TM II)
Tutorial Engineering Mechanics II (EM II)

Winter Semester 2016/17

Computer Tutorial Höhere Technische Festigkeitslehre (HTF)
Consultation Hour Höhere Technische Festigkeitslehre (HTF)

Summer Semester 2016

Rechnerunterstütze Mechanik II (RUMII)
Workshops in Arbeitstechniken für den Maschinenbau

Winter Semester 2015/16

Rechnerunterstütze Mechanik I (RUMI)

Summer Semester 2015

Workshops in Arbeitstechniken für den Maschinenbau
Computer Tutorial in Einführung in die Finite-Element-Methode

Winter Semester 2014/15

Computer Tutorial in Höhere Technische Festigkeitslehre