Dr.-Ing. Nikolas Baak

• European Structural Integrity Society (ESIS)
• German Association of Materials Science (DGM)

Baak, N.:
Mikromagnetische Charakterisierung des Ermüdungsverhaltens und der Eigenspannungsrelaxation tiefgebohrter Proben des Vergütungsstahls 42CrMo4.
Dissertation, Technische Universität Dortmund, Springer Vieweg Verlag, Wiesbaden, ISBN 978-3-658-41679-9 (2023).
https://doi.org/10.1007/978-3-658-41679-9

25) Baak, N.; Nickel, J.; Biermann, D.; Walther, F.:
Monitoring of the fatigue state of single-lip deep-drilled specimens made of the quenched and tempered steel AISI 4140 using micromagnetic methods.
5. Symposium Materialtechnik, (2023) 1-9. https://doi.org/10.21268/20230711-6 - Download

24) Güzel, D., Kaiser, T.; Lücker, L.; Baak, N.; Walther, F.; Menzel, A.:
Characterisation of damage by means of electrical measurements: Numerical predictions.
Proceedings in Applied Mathematics and Mechanics, (2023) 1-8. https://doi.org/10.1002/pamm.202300013 - Download

23) Sarafraz, Y.; Brink, M.; Baak, N.; Koch, A.; Walther, F.:
Influence of pre-deformation on fatigue life of high strength steels by means of micromagnetic Barkhausen noise.
Materials Testing 65 (5), (2023) 641-651. https://doi.org/10.1515/mt-2022-0425

22) Remalli, N.; Münch, M.; Hasan, M.; Kishore, K. N.; Stern, F.; Baak, N.; Walther, F.; Sambandam, M.; Klapprott, S.; Rajulapati, K. V.; Brandt, R.:
On the low temperature creep controlling mechanism in a high strength spring steel.
Journal of Materials Research and Technology 21, (2022) 2309-2315. https://doi.org/10.1016/j.jmrt.2022.09.131

21) Strodick, S.; Vogel, F.; Tilger, M.; Denstorf, M.; Kipp, M.; Baak, N.; Kukui, D.; Biermann, D.; Macias Barrientos, M.; Walther, F.:
Innovative X-ray diffraction and micromagnetic approaches for reliable residual stress assessment in deep rolled and microfinished AISI 4140 components.
Journal of Materials Research and Technology 20, (2022) 2942-2959. https://doi.org/10.1016/j.jmrt.2022.07.168 - Download

20) Nickel, J.; Baak, N.; Walther, F.; Biermann, D.:
Investigation of the thermomechanical loads on the bore surface during single-lip deep hole drilling of steel components.
Procedia CIRP 108 (2022) 805-810. https://doi.org/10.1016/j.procir.2022.03.125

19) Baak, N.; Nickel, J.; Biermann, D.; Walther, F.:
Microstructure analysis of single-lip deep hole drilled bores by electron backscatter diffraction and magnetic Barkhausen noise.
Procedia CIRP 108 (2022) 740-745. https://doi.org/10.1016/j.procir.2022.03.114

18) Strodick, S.; Baak, N.; Walther, F.:
Mikromagnetische Zustandsüberwachung und vorbeugende Instandhaltung hochbeanspruchter Bauteiloberflächen.
White Paper "Schadensmechanismen an Lagern 2022", VDI Wissensforum (2022).

17) Nickel, J.; Baak, N.; Volke, P.; Walther, F.; Biermann, D.:
Thermomechanical impact of the single-lip deep hole drilling on the surface integrity on the example of steel components.
Journal of Manufacturing and Materials Processing 5 (4), 120 (2021) 1-13. https://doi.org/10.3390/jmmp5040120

16) Nickel, J.; Baak, N.; Volke, P.; Walther, F.; Biermann, D.:
Thermal influence on the surface integrity during single-lip deep hole drilling of steel components.
MM Science Journal (3), (2021) 4636-4643. http://dx.doi.org/10.17973/MMSJ.2021_7_2021070

15) 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

14) Baak, N.; Nickel, J.; Deiters, A.; Biermann, D., Walther, F.:
Barkhausen noise-based assessment of single lip-deep drilling focused on fatigue life improvement of AISI 4140 component-near specimens.
Fatigue 2021, Proceedings of the 8th Engineering Integrity Society International Conference on Durability and Fatigue, (2021) 195-204.

13) Nickel, J.; Volke, P.; Baak, N.; Walther, F.; Biermann, D.:
Analyse der thermischen Randzonenbeeinflussung beim Einlippentiefbohren.
Unter Span (2020) 14.

12) Samfaß, L.; Baak, N.; Meya, R.; Hering, O.; Tekkaya, A.E.; Walther, F.:
Micro-magnetic damage characterization of bent and cold forged parts.
Production Engineering Research and Development 14 (2020) 1, 77-85. https://doi.org/10.1007/s11740-019-00934-y

11) Nickel, J.; Baak, N.; Walther, F.; Biermann, D.:
Influence of the feed rate in the single-lip deep hole drilling process on the surface integrity of steel components.
Advanced Surface Enhancement. INCASE 2019. Lecture Notes in Mechanical Engineering. Editors: Itoh S., Shukla S., Springer, Singapore (2020) 198-212. https://doi.org/10.1007/978-981-15-0054-1_21

10) Baak, N.; Nickel, J.; Starke, P.; Biermann, D.; Walther, F.:
Qualification of an inner surface Barkhausen noise sensor for residual stress measurements of single-lip deep drilled AISI 4140 by means of X-ray diffraction.
ICBM 13, Proceedings of the 13th International Conference on Barkhausen Noise and Micromagnetic Testing, (2019) 1-8.

9) Teschke, M.; Rozo Vasquez, J; Baak, N.; Samfaß, L.; Walther, F.:
Characterization of forming-induced damage of bent and hot flat rolled DP800 steel sheets by micromagnetic testing.
ICBM 13, Proceedings of the 13th International Conference on Barkhausen Noise and Micromagnetic Testing, (2019) 1-9.

8) Baak, N.; Nickel, J.; Biermann, D.; Walther, F.:
Barkhausen noise-based fatigue life prediction of deep drilled AISI 4140.
Procedia Structural Integrity 18 (2019) 274-279. https://doi.org/10.1016/j.prostr.2019.08.164

7) Baak, N.; Nickel, J.; Biermann, D.; Walther, F.:
Micromagnetic-based fatigue life prediction of single-lip deep drilled AISI 4140.
Structural Integrity 7 - Mechanical Fatigue of Metals: Experimental and Simulation Perspectives, Editors: Correia, J.; De Jesus, A.; Fernandes, A.; Calçada, R., Springer, Cham, ISBN 978-3-030-13979-7 (2019) 19-25. https://doi.org/10.1007/978-3-030-13980-3_3

6) Nickel, J.; Baak, N.; Biermann, D.; Walther, F.:
Einfluss des Tiefbohrens auf die Schwingfestigkeit von Bauteilen aus Vergütungsstahl 42CrMo4+QT.
wt Werkstattstechnik online 108, 11/12 (2018), 767-772.

5) Baak, N.; Schaldach, F.; Nickel, J.; Biermann, D.; Walther, F.:
Barkhausen noise assessment of the surface conditions due to deep hole drilling and their influence on the fatigue behaviour of AISI 4140.
Metals 8 (9), 720 (2018) 1-12. https://doi.org/10.3390/met8090720 - Download

4) Nickel, J.; Baak, N.; Biermann, D.; Walther, F.:
Untersuchungen zum Einfluss der spanenden Bearbeitung und des Schwefelgehalts auf die Schwingfestigkeit des Vergütungsstahls 42CrMo4+QT.
Werkstoffe in der Fertigung, 4 (2018) 30-31.

3) Nickel, J.; Baak, N.; Biermann, D.; Walther, F.:
Influence of the deep hole drilling process and sulphur content on the fatigue strength of AISI 4140 steel components.
Procedia CIRP 71 (2018) 209-214. https://doi.org/10.1016/j.procir.2018.05.069

2) Baak, N.; Tenkamp, J.; Walther, F.; Garlich, M.; Bambach, M.; Weibring, M.; Tenberge, P.:
Magnetische-Barkhausen-Rauschen-Analyse zur zerstörungsfreien Produktions- und Betriebsüberwachung lokaler physikalischer Eigenschaften.
Werkstoffprüfung 2017 - Fortschritte in der Werkstoffprüfung für Forschung und Praxis, Hrsg.: H. Frenz, J. B. Langer, Stahleisen, ISBN 978-3-9814516-7-2 (2017) 129-134.

1) Baak, N.; Garlich, M.; Schmiedt, A.; Bambach, M.; Walther, F.:
Characterization of residual stresses in austenitic disc springs induced by martensite formation during incremental forming using micromagnetic methods.
Materials Testing 59, 4 (2017) 309-314. https://doi.org/10.3139/120.111012 - Download

List of all publications

22) Baak, N. (Sp.); Kanagarajah, H.; Rozo Vasquez, J.; Strodick, S.; Walther, F.:
Produktions- und Eigenschaftsmonitoring mittels mikromagnetischer Prüfverfahren.
2. Steel Innovation, Köln, 25.-26. Sept. (2023).

21) Rozo Vasquez, J.; Sarafraz, Y.; Strodick, S.; Baak, N.; Walther, F. (Sp.):
Monitoring of fatigue evolution by in-situ measurement methods and micromagnetic analysis.
TMS 2023 Annual Meeting & Exhibition, San Diego, CA, USA, 19.-23. Mar. (2023).

20) Baak, N. (Sp.); Nickel, J.; Biermann, D.; Walther, F.:
Monitoring of the fatigue state of single-lip deep-drilled specimens made of the quenched and tempered steel AISI 4140 using micromagnetic methods.
5. Symposium Materialtechnik des Clausthaler Zentrums für Materialtechnik, Clausthal-Zellerfeld, 23.-24. Feb. (2023).

19) Schmidt, R. (Sp.); Nickel, J. (Sp.); Strodick, S.; Baak, N.; Walther, F.; Zabel, A.; Biermann, D.:
Beeinflussung der Funktionseigenschaften tiefgebohrter Bauteile durch gezielte Einstellung der Randzonenintegrität.
Wissensforum Zerspanung, Würzburg, 23.-24. Nov. (2022).

18) Baak, N.; Strodick, S. (Sp.); Nickel, J.; Biermann, D.; Walther, F.:
Mechanism based fatigue monitoring by means of Barkhausen noise and eddy-current analysis.
ICBM 14, 14th International Conference on Barkhausen Noise and Micromagnetic Testing, Stockholm, Sweden, 27.-30. Sept. (2022).

17) Strodick, S. (Sp.); Baak, N.; Walther, F.:
Mikromagnetische Zustandsüberwachung und vorbeugende Instandhaltung hochbeanspruchter Bauteiloberflächen.
5. VDI-Fachkonferenz Schadensmechanismen an Lagern 2022, Aachen, 28.-29. June (2022).

16) Baak, N. (Sp.); Nickel, J.; Biermann, D.; Walther, F.:
Microstructure analysis of single-lip deep hole drilled bore by electron backscatter diffraction and magnetic Barkhausen noise.
CIRP CSI 2022, 6th CIRP Conference on Surface Integrity, Lyon, 08.-10. June (2022).

15) Nickel, J. (Sp.); Baak, N.; Walther, F.; Biermann, D.:
Investigation of the thermomechanical loads on the bore surface during single-lip deep hole drilling of steel components.
CIRP CSI 2022, 6th CIRP Conference on Surface Integrity, Lyon, 08.-10. June (2022).

14) Koch, A.; Kalenborn, A.; Baak, N.; Tenkamp, J.; Walther, F. (Sp.):
Coupled characterization approaches for fatigue assessment of high-strength steel and light metal alloy structures.
TMS 2022 Annual Meeting & Exhibition, Web Conference, 27. Feb.-03. Mar. (2022).

13) Striemann, P. (Sp.); Hülsbusch, D.; Baak, N.; Niedermeier, M.; Walther, F.:
Fatigue behavior and damage evolution of additively manufactured short carbon fiber reinforced thermoplastics in the VHCF regime.
MECHCOMP7, 7th International Conference on Mechanics of Composites, Web Conference, Portugal, 01.-03. Sept. (2021).

12) Baak, N. (Sp.); Nickel, J.; Biermann, D.; Walther, F.:
Characterization of single-lip deep drilled samples by means of in-situ eddy-current measurements.
ICEAF 6, 6th International Conference of Engineering Against Failure, Web Conference, 23.-25. June (2021).

11) Nickel, J. (Sp.); Baak, N.; Volke, P.; Walther, F.; Biermann, D.:
Thermal influence on the surface integrity during single-lip deep hole drilling of steel components.
ICTIMT 2021, 2nd International Conference on Thermal Issues in Machine Tools, Web Conference, 20. Apr. (2021).

10) Baak, N. (Sp.); Nickel, J.; Deiters, A.; Biermann, D., Walther, F.:
Barkhausen noise-based assessment of single lip-deep drilling focused on fatigue life improvement of AISI 4140 component-near specimens.
Fatigue 2021, 8th Engineering Integrity Society International Conference on Durability & Fatigue, Web Conference, 29.-31. Mar. (2021).

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

8) Baak, N. (Sp.); Nickel, J.; Starke, P.; Biermann, D.; Walther, F.:
Qualification of an inner surface Barkhausen noise sensor for residual stress measurements of single-lip deep drilled AISI 4140 by means of X-ray diffraction.
ICBM13, 13th International Conference on Barkhausen Noise and Micromagnetic Testing, Prague, Czech Republic, 23.-26. Sept. (2019).

7) Teschke, M. (Sp.); 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).

6) Nickel, J. (Sp.); Baak, N.; Walther, F.; Biermann, D.:
Influence of the feed rate in the single-lip deep hole drilling process on the surface integrity of steel components.
INCASE 2019, International Conference on Advanced Surface Enhancement, Singapore, 10.-12. Sept (2019).

5) Baak, N. (Sp.); Nickel, J.; Biermann, D.; Walther, F.:
Barkhausen noise-based fatigue life prediction of deep drilled AISI 4140.
IGF XXV - 25th International Conference - Fracture and Structural Integrity, Catania, Italy, 12.-14. June (2019).

4) Baak, N. (Sp.); Nickel, J.; Biermann, D.; Walther, F.:
Micromagnetic-based fatigue life prediction of single-lip deep drilled AISI 4140.
ICMFM19, XIX International Colloquium on Mechanical Fatigue of Metals, Porto, Portugal, 05.-07. Sept. (2018).

3) Nickel, J. (Sp.); Baak, N.; Biermann, D.; Walther, F.:
Influence of the deep hole drilling process and sulphur content on the fatigue strength of AISI 4140 steel components.
CIRP CSI 2018, 4th CIRP Conference on Surface Integrity, TianJin, China, 11.-13. July (2018).

2) Baak, N. (Sp.); Nickel, J.; Biermann, D.; Walther, F.:
Einfluss der Vorschubgeschwindigkeit auf das Ermüdungsverhalten tiefgebohrter Proben aus dem Vergütungsstahl 42CrMo4+QT.
DGM/DVM-AG Materialermüdung, KME Germany GmbH & Co.KG, Osnabrück, 12.-13. Apr. (2018).

1) Baak, N. (Sp.); Tenkamp, J.; Walther, F.; Garlich, M.; Bambach, M.; Weibring, M.; Tenberge, P.:
Magnetische-Barkhausen-Rauschen-Analyse zur zerstörungsfreien Produktions- und Betriebsüberwachung lokaler physikalischer Eigenschaften.
Werkstoffprüfung 2017, Berlin, 30. Nov.-01. Dez. (2017).

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