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Group leader

M.Sc. Ronja Scholz

Main activities

  • Head Group Composites
  • Research and industrial projects Composites
  • Coordination competence field Bio-inspired Structures
  • Laboratory X-ray analytics
  • Radiation protection commissioner

Overview of research projects in group composites

Curriculum Vitae

Publications and presentations

25) Scholz, R. ; Langhansl, M.; Hemmerich, M.; Meyer, J.; Zollfrank, C.; Walther, F.:
Impact of solar radiation on chemical structure and micromechanical properties of cellulose-based humidity-sensing material Cottonid.
Functional Composite Materials 2, 9 (2021) 1-11. https://doi.org/10.1186/s42252-021-00022-4 - Download

24) Scholz, R.; Delp, A.; Walther, F.:
In situ characterization of the damage initiation and evolution in sustainable cellulose-based Cottonid.
TMS 2021 Annual Meeting & Exhibition Supplemental Proceedings, The Minerals, Metals & Materials Series, (2021) 867-878. https://doi.org/10.1007/978-3-030-65261-6_77

23) Dörrstein, J.; Schwarz, D.; Scholz, R.; Walther, F.; Zollfrank, C.:
Tuneable material properties of Organosolv lignin biocomposites in response to heat and shear forces.
European Polymer Journal 148, 110359 (2021) 1-11. https://doi.org/10.1016/j.eurpolymj.2021.110359

22) Scholz, R.; Delp, A.; Walther, F.:
In situ characterization of damage development in Cottonid due to quasi-static tensile loading.
Materials 13 (9), 2180 (2020) 1-12. https://doi.org/10.3390/ma13092180 - Download

21) Scholz, R.; Langhansl, M.; Zollfrank, C.; Walther, F.:
Humidity-sensing material Cottonid - Microstructural tuning for improved actuation and fatigue performance.
Frontiers in Materials 7, 156 (2020) 1-10. https://doi.org/10.3389/fmats.2020.00156

20) Senatov, F., Amanbek, G., Orlova, P., Bartov, M., Grunina, T., Kolesnikov, E., Maksimkin, A., Kaloshkin, S.D., Poponova, M., Nikitin, K., Krivozubov, M., Strukova, N., Manskikh, V., Anisimova, N., Kiselevskiy, M., Scholz, R., Knyazeva, M., Walther, F., Lunin, V., Gromov, A., Karyagina, A.:
Biomimetic UHMWPE/HA scaffolds with rhBMP-2 and erythropoietin for reconstructive surgery.
Materials Science & Engineering C, (2020) 110750 1-14. https://doi.org/10.1016/j.msec.2020.110750

19) Bulygina, I.; Senatov, F.; Choudhary, R.; Kolesnikov, E.; Kaloshkin, S.; Scholz, R.; Knyazeva, M.; Walther, F.; Anisimova, N.; Kiselevskiy, M.:
Biomimetic scaffold fabricated with a mammalian trabecular bone template.
Polymer Degradation and Stability, 172 (2020) 109076 1-9. https://doi.org/10.1016/j.polymdegradstab.2020.109076

18) Wegner, N.; Scholz, R.; Knyazeva, M.; Walther, F.:
Service life characterization of orthopedic implant material made of ultra-high molecular weight polyethylene under physiological conditions.
Journal of the Mechanical Behavior of Biomedical Materials 104, 103617 (2020) 1-8. https://doi.org/10.1016/j.jmbbm.2020.103617

17) Myslicki, S.; Bletz-Mühldorfer, O.; Diehl, F.; Lavarec, C.; Vallée, T.; Scholz, R.; Walther, F.:
Fatigue of glued-in rods in engineered hardwood products - Part I: Experimental results.
The Journal of Adhesion 95, 5-7 (2019) 675-701. https://doi.org/10.1080/00218464.2018.1555477

16) Grunwald, C.; Vallée, T.; Fecht, S.; Bletz-Mühldorfer, O.; Diehl, F.; Bathon, L.; Myslicki, S.; Scholz, R.; Walther, F.:
Rods glued in engineered hardwood products part I: Experimental results under quasi-static loading.
International Journal of Adhesion and Adhesives 90 (2019) 163-181. https://doi.org/10.1016/j.ijadhadh.2018.05.003

15) Grunwald, C.; Vallée, T.; Fecht, S.; Bletz-Mühldorfer, O.; Diehl, F.; Bathon, L.; Myslicki, S.; Scholz, R.; Walther, F.:
Rods glued in engineered hardwood products part II: Numerical modelling and capacity prediction.
International Journal of Adhesion and Adhesives 90 (2019) 182-198. https://doi.org/10.1016/j.ijadhadh.2018.05.004

14) Scholz, R.; Langhansl, M.; Zollfrank, C.; Walther, F.:
Cottonid - Ein leistungsfähiger Funktionswerkstoff für feuchtesensitive Aktorik.
Smarte Strukturen und Systeme - Tagungsband des 4Smarts-Symposiums, Hrsg. M. Wiedemann, T. Melz, ISBN 978-3-8440-6425-4 (2019) 63-75.

13) Hemmerich, M.; Scholz, R.; Saha, S.; Walther, F.; Meyer, J.:
Polylactid - ein geeigneter Biokunststoff für optische Anwendungen? - Versuchsaufbau zur zeitgerafften optischen und thermischen Alterung.
Sonderpublikation/special issue chrom+food FORUM 2019, 03 (2019) 43-45.

12) Scholz, R.; Langhansl, M.; Zollfrank, C.; Walther, F.:
Experimental study on the actuation and fatigue behavior of the biopolymeric material Cottonid.
Materials Today: Proceedings 7 (2019) 476-483. https://doi.org/10.1016/j.matpr.2018.11.112

11) Scholz, R.; Wegner, N.; Porchetta, D.; Knyazeva, M.; Walther, F.:
Novel in vitro test for characterizing the long-term resistance of UHMWPE as implant material.
Skriptsammlung des DVM-AK „Zuverlässigkeit von Implantaten und Biostrukturen“, (2018) 1-17.

10) Bletz-Mühldorfer, O.; Diehl, F.; Bathon, L.; Myslicki, S.; Scholz, R.; Walther, F.; Grunwald, C.; Vallée, T.:
Load-bearing behavior of rods glued in hardwood.
Adhesion Adhesives + Sealants 4 (2018) 10-13.

9) Jamrozy, M.; Scholz, R.; Walther, F.; Bletz-Mühldorfer, O.; Bathon, L.:
Optimierung des Druckverlaufs von Schraubenpressklebungen für den Holzbau.
Werkstoffprüfung 2018 - Werkstoffe und Bauteile auf dem Prüfstand, Hrsg.: G. Moninger, Stahleisen, ISBN 978-3-941269-99-6 (2018) 255-260.

8) Bletz-Mühldorfer, O.; Diehl, F.; Bathon, L.; Myslicki, S.; Scholz, R.; Walther, F.; Grunwald, C.; Vallée, T.:
Traglastverhalten von eingeklebten Stäben in Laubhölzern.
adhäsion KLEBEN & DICHTEN 10 (2018) 46-49.

7) Scholz, R.; Knyazeva, M.; Porchetta, D.; Wegner, N.; Senatov, F.; Salimon, A.; Kaloshkin, S.; Walther, F.:
Development of biomimetic in vitro fatigue assessment for UHMWPE implant materials.
Journal of the Mechanical Behavior of Biomedical Materials 85 (2018) 94-101. https://doi.org/10.1016/j.jmbbm.2018.05.034

6) Dörrstein, J.; Scholz, R.; Schwarz, D.; Schieder, D.; Sieber, V.; Walther, F.; Zollfrank, C.:
Dataset on the structural characterization of organosolv lignin obtained from ensiled Po-aceae grass and load-dependent molecular weight changes during thermoplastic processing.
Data in Brief 17 (2018) 647-652. https://doi.org/10.1016/j.dib.2018.01.060

5) Dörrstein, J.; Scholz, R.; Schwarz, D.; Schieder, D.; Sieber, V.; Walther, F.; Zollfrank, C.:
Effects of high-lignin-loading on thermal, mechanical, and morphological properties of bioplastic composites.
Composite Structures 189 (2018) 349-356. https://doi.org/10.1016/j.compstruct.2017.12.003

4) Goerlich, P.; Scholz, R.; Walther, F.:
Micro-CT defect analysis and hardness distribution of flat-face extruded EN AW6060 aluminium chips.
Materials Testing 59, 7-8 (2017) 613-617. https://doi.org/10.3139/120.111050 - Download

3) Scholz, R.; Delp, A.; Kaplan, A.; Walther, F.:
Vergleichende Bewertung der temperaturabhängigen mechanischen Eigenschaften von Vulkanfiber und technischen Kunststoffen.
Werkstoffprüfung 2016 - Fortschritte in der Werkstoffprüfung für For­schung und Praxis, Hrsg.: H.-J. Christ, Stahleisen, ISBN 978-3-514-00830-4 (2016) 245-250.

2) Scholz, R.; Mittendorf, R.-M.; Engels, J. K.; Hartmaier, A.; Künne, B.; Walther, F.:
Direction-dependent mechanical characterization of cellulose-based composite vulcanized fiber.
Materials Testing 58, 10 (2016) 813-817. https://doi.org/10.3139/120.110929 - Download

1) Fiedler Bremer, C.; Scholz, R.; Myslicki, S.; Starke, P.; Boller, C.; Walther, F.; Krause, M.:
NDT-based characterization of timber and vulcanized fiber for civil infrastructure.
NDT-CE, International Symposium Non-Destructive Testing in Civil Engineering, Berlin (2015) 1-11.

 

List of all publications

34) Scholz, R. (V.); Delp, A.; Walther, F.:
In situ characterization of the damage initiation and evolution in sustainable cellulose-based Cottonid.
TMS 2021 Annual Meeting & Exhibition, Web Conference, 15.-17. Mar. (2021).

33) Delp, A. (V.); Mehlich, D.; Scholz, R.; Bletz-Mühldorfer, O.; Bathon, L.; Walther, F.:
Experimentelle Untersuchungen für eine modellbasierte Optimierung der Schraubenpressklebung im Holzbau.
21. Kolloquium: Gemeinsame For­schung in der Klebtechnik, Web-Konferenz, 02.-03. März (2021).

32) Delp, A. (V.); Mehlich, D. (V.); Scholz, R.; Bletz-Mühldorfer, O.; Bathon, L.; Walther, F.:
Weiterentwicklung der Schraubenpressklebung im Holzbau.
20. Kolloquium: Gemeinsame For­schung in der Klebtechnik, Würzburg, 03.-04. März (2020).

31) Scholz, R. (V.); Langhansl, M.; Zollfrank, C.; Walther, F.:
Influence of environmental stimuli on deformation behavior of Cottonid through instrumented experiment control assessment.
5th Bioinspired Materials 2020, Web Conference, 16.-18. Mar. (2020).

30) Saha, S. (V.); Hemmerich, M.; Scholz, R.; Tappe, F.; Walther, F.; Meyer, J.:
Polylactide - a bio-plastic suitable for optical components?
DisoMAT 2019, International School and Conference on Disorder in Materials Science, Potsdam, 24.-26. Sept. (2019).

29) Langhansl, M. (V.); Scholz, R.; Walther, F.; Zollfrank, C.:
Bioinspirierte feuchtegesteuerte Aktuatoren auf Zellulosebasis.
Werkstoffwoche 2019, Dresden, 18.-20. Sept. (2019).

28) Langhansl, M. (V.); Scholz, R.; Walther, F. ; Zollfrank, C.:
Cottonid - Cellulose with tunable hygroscopicity.
EUROMAT 2019, European Congress and Exhibition on Advanced Materials and Processes, Stockholm, Sweden, 01.-05. Sept. (2019).

27) Scholz, R. (V.); Langhansl, M.; Zollfrank, C.; Walther, F.:
Instrumented actuation fatigue evaluation for adaptability and long-term behavior characterization of stimuli-responsive materials.
EUROMAT 2019, European Congress and Exhibition on Advanced Materials and Processes, Stockholm, Sweden, 01.-05. Sept. (2019).

26) Jamrozy, M. (V.); Scholz, R.; N. Wittpoth; Walther, F.; Mehlich, D.; Mühldorfer-Bletz, O.; Bathon, L.:
Influence of material thickness and microstructure on the mechanical properties and pressure distribution in timber constructions.
CompWood 2019, International conference on computational methods in wood mechanics - from material properties to timber constructions. ECCOMAS Thematic Conference, Växjö, Schweden, 17.-19. June (2019).

25) Scholz, R. (V.); Langhansl, M.; Zollfrank, C.; Walther, F.:
Evaluation of microstructural and environmental influences on actuation behavior of Cottonid for stimuli responsive element production.
InMAT 2019, 4th European Symposium on Intelligent Materials, Kiel, 17.-19. Juni (2019).

24) Scholz, R. (V.); Langhansl, M.; Zollfrank, C.; Walther, F.:
Cottonid - Ein leistungsfähiger Funktionswerkstoff für feuchtesensitive Aktorik.
4SMARTS - Symposium für Smarte Strukturen und Systeme, 22.-23. Mai (2019).

23) Wegner, N. (V.); Klein, M.; Scholz, R.; Knyazeva, M.; Walther, F.:
In vitro short-time method for the determination of long-term stability of implant materials.
5th Euro BioMAT - European Symposium & Exhibition on Biomaterials and Related Areas, Weimar, 08.-09. Mai (2019).

22) Jamrozy, M. (V.); Scholz, R.; Walther, F.; Mühldorfer-Bletz, O.; Bathon, L.:
Optimierung des Druckverlaufs von Schraubenpressklebungen für den Holzbau.
Tagung Werkstoffprüfung 2018, Bad Neuenahr, 06.-07. Dez. (2018).

21) Langhansl, M. (V.); Scholz, R.; Walther, F.; Zollfrank, C.:
Neues vom Lederstein.
3. Kooperationsforum „Holz als neuer Werkstoff“, Regensburg, 22. Nov. (2018).

20) Wegner, N. (V.); Scholz, R.; Porchetta, D.; Knyazeva, M.; Walther, F.:
In vitro short-time procedure for the determination of long-term stability of UHMWPE implant materials.
Annual Meeting of the German Society for Biomaterials, Braunschweig, 08.-10. Nov. (2018).

19) Wegner, N. (V.); Scholz, R.; Porchetta, D.; Knyazeva, M.; Walther, F.:
In vitro-Kurzzeitmethode zur Bestimmung der Ermüdungseigenschaften von Ultra-High-Molecular-Weight Polyethylene (UHMWPE).
DGM/DVM-AG Materialermüdung, Technische Universität Dort­mund, Dort­mund, 25.-26. Okt. (2018).

18) Scholz, R. (V.); Wegner, N.; Porchetta, D.; Knyazeva, M.; Walther, F.:
Novel in vitro test for characterizing the long-term resistance of UHMWPE as implant material.
DVM-AK „Zuverlässigkeit von Implantaten und Biostrukturen“, Berlin, 19.-20. Okt. (2018).

17) Langhansl, M. (V.); Scholz, R.; Walther, F.; Zollfrank, C.:
Structural optimization of biopolymer composite Cottonid by variation of manufacturing parameters.
MSE 2018, Materials Science and Engineering, Darmstadt, 26.-28. Sept. (2018).

16) Myslicki, S. (V.); Scholz, R.; Bletz-Mühldorfer, O.; Diehl, F.; Bathon, L.; Vallée, T.; Walther, F.:
Fatigue of glued-in rods in engineered hardwood products - Part I: Experimental results.
EURADH 2018, 12th European Adhesion Conference, Lisbon, Portugal, 05.-07. Sept. (2018).

15) Vallée, T. (V.); Grunwald, C.; Fecht, S.; Bletz-Mühldorfer, O.; Diehl, F.; Bathon, L.; Myslicki, S.; Scholz, R.; Walther, F.:
Rods glued in engineered hardwood products.
WCTE 2018, World Conference on Timber Engineering, Seoul, Republic of Korea, 20.-23. Aug. (2018).

14) Knyazeva, M. (V.); Scholz, R.; Wegner, N.; Porchetta, D.; Walther, F.:
Development of novel in vitro fatigue test for biomimetic implants made of UHMWPE.
Innovative Material Science & Nanotechnology Conference, Valencia, Spain, 09.-11. July (2018).

13) Scholz, R. (V.); Langhansel, M.; Zollfrank, C.; Walther, F.:
Experimental study on the actuation and fatigue behavior of the biopolymeric material Cottonid.
1st International Conference on Materials, Mimicking, Manufacturing from and for Bio Application 2018, Milan, Italy, 27.-29. June (2018).

12) Scholz, R. (V.); Langhansel, M.; Zollfrank, C.; Walther, F.:
Influence of process-related anisotropy on the fatigue behavior of the biopolymeric material Cottonid.
4th Euro Bio-inspired Materials 2018, Potsdam, 19.-22. Mar. (2018).

11) Knyazeva, M. (V.); Scholz, R.; Porchetta, D.; Walther, F.:
A novel in vitro fatigue test for biomimetic implants made of UHMWPE.
2018 TMS Annual Meeting & Exhibition, Phoenix, AZ, USA, 11.-15. Mar. (2018).

10) Scholz, R. (V.); Wegner, N.; Dörrstein, J.; Langhansl, M.; Zollfrank, C.; Walther, F.:
Mechanical evaluation of biopolymer composites concerning moisture-driven movements.
InMAT 2017, 3rd European Symposium on Intelligent Materials, Kiel, 07.-09. Juni (2017).

9) Scholz, R. (V.); Hülsbusch, D.; Walther, F.:
Deformation and damage behavior of vulcanized fiber exposed to service-relevant environments.
KKZ-Oberseminar - Polymer Lecture/Introduction to Polymer Research, Hochschule Merseburg, 07. Apr. (2017).

8) Scholz, R. (V.); Hülsbusch, D.; Walther, F.:
Application-oriented mechanical qualification of the biocomposite vulcanized fiber.
Arbeitskreissitzung “Naturfaserverstärkte Kunststoffe-, AVK-Geschäftsstelle, Frankfurt am Main, 22. März (2017).

7) Mrzljak, S. (V.); Hülsbusch, D.; Scholz, R.; Walther, F.:
Computertomographische Charakterisierung der Schädigungsentwicklung an glasfaserverstärktem Polyurethan.
DGM/DVM-AK Materialermüdung, Universität Duisburg-Essen, Duisburg, 16.-17. März (2017).

6) Goerlich, P. (V.); Scholz, R.; Walther, F.:
Micro-computed tomographic defect analysis and hardness distribution of flat-face extruded EN AW-6060 aluminum chips.
Jung-DGM Treffen, Doktoranden in den MatWerk-Disziplinen in der Region Rhein-Ruhr, Forschungszentrum Jülich, 21. Febr. (2017).

5) Scholz, R. (V.); Delp, A.; Kaplan, A.; Walther, F.:
Vergleichende Bewertung der temperaturabhängigen mechanischen Eigenschaften von Vulkanfiber und technischen Kunststoffen.
Werkstoffprüfung 2016, Neu-Ulm, 01.-02. Dez. (2016).

4) Scholz, R. (V.); Frieling, G.; Israr, R.; Engels, J.; Kriwet, A.; Hartmaier, A.; Walther, F.:
Rheological characterization of vulcanized fiber with double-ring flexural tests.
MSE 2016, Materials Science and Engineering, Darmstadt, 27.-29. Sept. (2016).

3) Scholz, R. (V.); Myslicki, S.; Starke, P.; Boller, C.; Walther, F.:
Einsatz zerstörungsfreier Prüfverfahren zur Charakterisierung des Ermüdungsverhaltens von Naturstoffen.
Jung-DGM Treffen, Doktoranden in den MatWerk-Disziplinen in der Region Rhein-Ruhr, RWTH Aachen, 28. Apr. (2016).

2) Scholz, R. (V.); Myslicki, S.; Starke, P.; Boller, C.; Walther, F.:
Charakterisierung des Ermüdungsverhaltens von Buchenholz und Vulkanfiber mit Hilfe zerstörungsfreier Prüfverfahren.
DGM/DVM-AK Materialermüdung, FAU Erlangen-Nürnberg, Erlangen, 14.-15. Apr. (2016).

1) Fiedler Bremer, C. (V.); Scholz, R.; Myslicki, S.; Starke, P.; Boller, C.; Walther, F.; Krause, M.:
NDT-based characterization of timber and vulcanized fiber for civil infrastructure.
NDT-CE, International Symposium Non-Destructive Testing in Civil Engineering, Berlin, 15.-17. Sept. (2015).

 

List of all presentations

Location & approach

The campus of TU Dort­mund University is located close to interstate junction Dort­mund West, where the Sauerlandlinie A45 (Frankfurt-Dort­mund) crosses the Ruhrschnellweg B1/A40. The best interstate exit to take from A45 is "Dort­mund-Eichlinghofen (6)" (closer to Campus Süd), and from B1/A40 "Dort­mund-Barop (44)" (closer to Campus Nord). Signs for the uni­ver­si­ty are located at both exits. Follow the signs towards Campus-Süd.

The Department of Materials Test Engineering (WPT) is located in the "Maschinenbau III" building, which can be reached via entrance 41, where parking spaces are available. The secretariat is located on the third floor in E 03 - room 3.027.

For the approach to the TU Dort­mund University you will find the navigation on Google Maps.

Address for navigation devices:

Baroper Straße 303

D-44227 Dort­mund

Germany

TU Dort­mund University has its own train station ("Dort­mund Uni­ver­si­tät"). From there, suburban trains (S-Bahn) leave for Dort­mund main station ("Dort­mund Hauptbahnhof") and Düsseldorf main station via the "Düsseldorf Airport Train Station" (take S-Bahn number 1). The uni­ver­si­ty is easily reached from Bochum, Essen, Mülheim an der Ruhr and Duisburg. From there, Campus Süd, where the Department of Materials Test Engineering (WPT) is located, can be reached in five minutes via the H-Bahn in the direction of "Eichlinghofen" or "Campus Süd".

After leaving the H-Bahn station "Campus Süd" cross the small street and go straight forward. Take the stairs (elevator on the left side).
Turn right directly under the canopy, go approximately 200 m, the Building "Maschinenbau III" is at the end of the path.

The office is located on the third floor in E03 - room 3.027.

Dort­mund's public transport company DSW21 offers an interactive route network map with timetable information.

The AirportExpress is a fast and convenient means of transport from Dort­mund Airport (DTM) to Dort­mund Central Station, taking you there in little more than 20 minutes. From Dort­mund Central Station, you can continue to the uni­ver­si­ty campus by interurban railway (S-Bahn). A larger range of in­ter­na­tio­nal flight connections is offered at Düsseldorf Airport (DUS), which is about 60 kilometres away and can be directly reached by S-Bahn from the uni­ver­si­ty station.

The H-Bahn is one of the hallmarks of TU Dort­mund University. There are two stations on Campus Nord. One ("Dort­mund Uni­ver­si­tät S") is directly located at the suburban train stop, which connects the uni­ver­si­ty directly with the city of Dort­mund and the rest of the Ruhr Area. Also from this station, there are connections to the "Technologiepark" and (via Campus Süd) Eichlinghofen. The other station is located at the dining hall at Campus Nord and offers a direct connection to Campus Süd every five minutes.

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