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Scientific Assistant

M.Sc. Julian Rozo Vasquez

Main activities

  • Scanning electron microscopy (SEM)
  • Energy dispersive X-ray spectroscopy (SEM-EDX)
  • Electron backscatter diffraction (SEM-EBSD)
  • Excercise Mikroskopie und Mikroanalytik (MM)

Overview of research projects in group steels

Curriculum Vitae

Publications and presentations

9) Kersting, L.; Arian, B.; Rozo Vasquez, J.; Trächtler, A.; Homberg, W.; Walther, F.:
Innovative online measurement and modelling approach for property-controlled flow forming processes.
Key Engineering Materials 926 (2022) 862-874. https://doi.org/10.4028/p-yp2hj3 - Download

8) Hajavifard, R.; Afzal, M.J.; Rozo Vasquez, J.; Buhl, J.; Walther, F.:
Tailoring the surface integrity of disc springs for stabilization of residual stresses by incremental sheet forming.
M2D2022, Proceedings of the 9th International Conference on Mechanics and Materials in Design (2022) 259-266.

7) Rozo Vasquez, J.; Arian, B.; Riepold, M.; Homberg, W.; Trächtler, A.; Walther, F.:
Magnetic Barkhausen noise analysis for microstructural effects separation during flow forming of metastable austenite 304L.
Proceedings of the 11th International Workshop NDT in Progress, NDT in Progress 2021 (12), (2021) 1-9.Download

6) Arian, B.; Riepold, M.; Rozo Vasquez, J.; Homberg, W.; Trächtler, A.; Walther, F.:
Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming.
ESAFORM 2021, Proceedings of the 24th International Conference on Material Forming, (2021) 1-9. https://doi.org/10.25518/esaform21.2759 - Download

5) Riepold, M.; Arian, B.; Rozo Vasquez, J.; Homberg, W.; Walther, F.; Trächtler, A.:
Model approaches for closed-loop property control for flow forming.
Advances in Industrial and Manufacturing Engineering 3, 100057 (2021) 1-9. https://doi.org/10.1016/j.aime.2021.100057 - Download

4) Baak, N.; Hajavifard, R.; Lücker, L.; Rozo Vasquez, J.; Strodick, S.; Teschke, M.; Walther, F.:
Micromagnetic approaches for microstructure analysis and capability assessment.
Materials Characterization 178, 111189 (2021) 1-14. https://doi.org/10.1016/j.matchar.2021.111189

3) Rozo Vasquez, J.; Arian, B.; Riepold, M.; Homberg, W.; Ansgar, T.; Walther, F.:
Microstructural investigation on phase transformation during flow forming of the metastable austenite AISI 304.
Sonderbände der Praktische Metallographie zur 54. Metallographie-Tagung - Fortschritte in der Metallographie, Hrsg.: A. Neidel, ISBN 978-3-88355-422-8 (2020) 75-81.

2) Teschke, M.; Rozo Vasquez, J.; Lücker, L.; Walther, F.:
Characterization of damage evolution on hot flat rolled mild steel sheets by means of micromagnetic parameters and fatigue strength determination.
Materials 13 (11), 2486 (2020) 1-19. https://doi.org/10.3390/ma13112486 - Download

1) Knyazeva, M.; Rozo Vasquez, J., Gondecki, L.; Weibring, M.; Pöhl, F.; Kipp, M.; Tenberge, P.; Theisen, W; Walther, F.; Biermann, D.:
Micro-magnetic and microstructural characterization of wear progress on case-hardened 16MnCr5 gear wheels.
Materials 11(11), 2290 (2018) 1-17. https://doi.org/10.3390/ma11112290 - Download

 

List of all publications

10) Hajavifard, R. (V.); Afzal, M.J.; Rozo Vasquez, J.; Buhl, J.; Walther, F.:
Tailoring the surface integrity of disc springs for stabilization of residual stresses by incremental sheet forming.
M2D2022 - 9th International Conference on Mechanics and Materials in Design, Funchal, Madeira, Portugal, 26.-30. June (2022).

9) Kersting, L. (V.); Arian, B.; Rozo Vasquez, J.; Trächtler, A.; Homberg, W.; Walther, F.:
Innovative Online Measurement and Modelling Approach for Property-Controlled Flow Forming Processes.
ESAFORM2022 - 25th International Conference on Material Forming, Braga, Portugal, 27.-29. Apr. (2022).

8) Rozo Vasquez, J. (V.); Arian, B.; Riepold, M.; Homberg, W.; Trächtler, A.; Walther, F.:
Magnetic Barkhausen noise analysis for microstructural effects separation during flow forming of metastable austenite 304L.
ENDT&CM2021, 2nd European Non-Destructive Testing & Condition Monitoring Days, Prague, Czech Republic, 04.-07. Oct. (2021).

7) Arian, B. (V.); Riepold, M.; Rozo Vasquez, J.; Homberg, W.; Trächtler, A.; Walther, F.:
Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming.
ESAFORM 2021, 24th International Conference on Material Forming, Web Conference, 14.-16. Apr. (2021).

6) Rozo Vasquez, J.; Strodick, S.; Baak, N.; Walther, F. (V.):
(Mikro-) Magnetische Charakterisierung von produktionsprozessabhängigen Werkstoffzuständen - Anwendungen und Herausforderungen.
Kolloquium des Arbeitskreises „Messtechnik“ des DFG SPP 2183 „Eigenschaftsgeregelte Umformprozesse“, Impulsvortrag, 04. Nov. (2020).

5) Lücker, L. (V.); Teschke, M.; Rozo Vasquez, J.; Walther, F.:
Characterization of forming-induced damage of hot flat rolled micro-alloyed steel by micromagnetic testing correlated with fatigue behavior.
MSE 2020, Materials Science and Engineering, Web Conference, 22.-25. Sept. (2020).

4) Rozo Vasquez, J. (V.); Arian, B.; Markus, R.; Homberg, W.; Ansgar, T.; Walther, F.:
Microstructural investigation on phase transformation during flow forming of the metastable austenite AISI 304.
MET2020, 54. Metallographie-Tagung, Web-Konferenz, 16.-18. Sept. (2020).

3) Strodick, S.; Rozo Vasquez, J.; Walther, F. (V.):
(Mikro-) Magnetische Messverfahren zur Charakterisierung von Werkstoffzuständen und Regelung von Produktionsprozessen - Anwendungen und Herausforderungen in der Forschung.
Kolloquium des Arbeitskreises „Messtechnik“ des DFG SPP 2086 „Oberflächenkonditionierung in der Zerspanung“, Impulsvortrag, 05. Mai (2020).

2) Teschke, M. (V.); Samfaß, L.; Rozo Vasquez, J.; Baak, N.; Walther, F.:
Characterization of forming-induced damage of bent and hot flat rolled DP800 steel sheets by micromagnetic testing.
ICBM13, 13th International Conference on Barkhausen Noise and Micromagnetic Testing, Prague, Czech Republic, 23.-26. Sept. (2019).

1) Knyazeva, M. (V.); Rozo Vasquez, J., Gondecki, L.; Weibring, M.; Pöhl, F.; Kipp, M.; Tenberge, P.; Theisen, W; Walther, F.; Biermann, D.:
Micro-magnetic and microstructural characterization of wear progress on case-hardened 16MnCr5 gear wheels.
2nd International Conference Materials Chain MCIC2018, Bochum, Germany, 12.-14. Nov. (2018).

 

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 Chair 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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