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Institut für Produkt Engineering - Lehrstuhl Fertigungstechnik

Anschrift
Lotharstraße 1
47057 Duisburg
Raum
MA 123

Funktionen

  • Wissenschaftliche/r Mitarbeiter/in, Fertigungstechnik

Die folgenden Publikationen sind in der Online-Universitätsbibliographie der Universität Duisburg-Essen verzeichnet. Weitere Informationen finden Sie gegebenenfalls auch auf den persönlichen Webseiten der Person.

    Artikel in Zeitschriften

  • Soares Barreto, Erika; Frey, Maximilian; Ruschel, Lucas Matthias; Wegner, Jan; Kleszczynski, Stefan; Busch, Ralf; Ellendt, Nils
    Gas atomization of fully-amorphous Ni₆₂Nb₃₈ powder
    In: Materials Letters Jg. 357 (2024) 135798
  • Deckers, T; Fardan, A.; Kersting, L.; Kreutzer, A.; Forêt, P.; Goff, S. Dubiez-Le; Witt, Gerd; Kleszczynski, Stefan; Klement, U.; Hryha, E.
    Impact of processing gas composition on process stability and properties of PBF-LB/M processed alloy 718
    In: Journal of Manufacturing Processes Jg. 120 (2024) S. 712 - 718
  • Martínez-Hincapié, Ricardo; Wegner, Jan; Anwar, Muhammad Usman; Raza-Khan, Ali; Franzka, Steffen; Kleszczynski, Stefan; Čolić, Viktor
    The determination of the electrochemically active surface area and its effects on the electrocatalytic properties of structured nickel electrodes produced by additive manufacturing
    In: Electrochimica Acta Jg. 476 (2024) 143663
  • Wegner, Jan; Martínez-Hincapié, Ricardo; Čolić, Viktor; Kleszczynski, Stefan
    Additively Manufactured Iron-Based Bulk Metallic Glass Composite Electrocatalysts : Effect of Microstructural States on the Oxygen Evolution Reaction Activity
    In: Advanced Materials Interfaces Jg. 10 (2023) Nr. 16, 2202499
  • Schnell, Norman; Wegner, Jan; Elspaß, Arno; Kleszczynski, Stefan
    Effective absorptivity of diamond-reinforced metal matrix composites for powder bed fusion using a laser beam
    In: Additive Manufacturing Letters Jg. 6 (2023) 100138
  • Soares Barreto, Erika; Wegner, Jan; Frey, Maximilian; Kleszczynski, Stefan; Busch, Ralf; Uhlenwinkel, Volker; Mädler, Lutz; Ellendt, Nils
    Influence of oxygen in the production chain of Cu–Ti-based metallic glasses via laser powder bed fusion
    In: Powder Metallurgy Jg. 66 (2023) Nr. 4, S. 343 - 354
  • Elspaß, Arno; Dang, D.; Wegner, Jan; Cikalova, U.; Bendjus, B.; Witt, Gerd; Kleszczynski, Stefan
    Introduction and accuracy improvement of laser speckle photometry for in-situ monitoring material densities in laser powder bed fusion of metals
    In: Journal of Manufacturing Processes Jg. 108 (2023) S. 475 - 484
  • Frey, Maximilian; Wegner, Jan; Barreto, Erika Soares; Ruschel, Lucas; Neuber, Nico; Adam, Bastian; Riegler, Sascha Sebastian; Jiang, Hao-Ran; Witt, Gerd; Ellendt, Nils; Uhlenwinkel, Volker; Kleszczynski, Stefan; Busch, Ralf
    Laser powder bed fusion of Cu-Ti-Zr-Ni bulk metallic glasses in the Vit101 alloy system
    In: Additive Manufacturing Jg. 66 (2023) 103467
  • Schnell, Norman; Ferreira, Manuel Pinho; Wegner, Jan; Tillmann, Wolfgang; Kleszczynski, Stefan
    Process strategy for crack-free production of diamond-reinforced metal matrix composites with minimal graphitization through laser powder bed fusion
    In: Diamond and Related Materials Jg. 135 (2023) 109788
  • Stern, Felix; Grabowski, Jonas; Elspaß, Arno; Kotzem, Daniel; Kleszczynski, Stefan; Witt, Gerd; Walther, Frank
    Influence assessment of artificial defects on the fatigue behavior of additively manufactured stainless steel 316LVM
    In: Procedia Structural Integrity Jg. 37 (2022) Nr. C, S. 153 - 158
  • Soares Barreto, Erika; Frey, Maximilian; Wegner, Jan; Jose, Allen; Neuber, Nico; Busch, Ralf; Kleszczynski, Stefan; Mädler, Lutz; Uhlenwinkel, Volker
    Properties of gas-atomized Cu-Ti-based metallic glass powders for additive manufacturing
    In: Materials & Design Jg. 215 (2022) 110519
  • Rosenthal, Stephan; Hahn, Marlon; Tekkaya, A. Erman; Platt, Sebastian; Kleszczynski, Stefan; Witt, Gerd
    Speeding up Additive Manufacturing by Means of Forming for Sheet Components with Core Structures
    In: International Journal of Precision Engineering and Manufacturing-Green Technology Jg. 9 (2022) Nr. 4, S. 1021 - 1034
  • Wegner, Jan; Best, James P.; Schnell, Norman; Kleszczynski, Stefan
    Structural deviations of bulk metallic glasses in downfacing surfaces fabricated via Laser Powder Bed Fusion
    In: Procedia CIRP Jg. 111 (2022) Nr. 12th CIRP Conference on Photonic Technologies [LANE 2022], S. 105 - 110
  • Wegner, Jan; Frey, Maximilian; Busch, Ralf; Kleszczynski, Stefan
    Additive manufacturing of a compliant mechanism using Zr-based bulk metallic glass
    In: Additive Manufacturing Letters Jg. 1 (2021) 100019
  • Schnell, Norman; Schoeler, Maximilian; Witt, Gerd; Kleszczynski, Stefan
    Experimental and numerical thermal analysis of the laser powder bed fusion process using in situ temperature measurements of geometric primitives
    In: Materials & Design Jg. 209 (2021) 109946
  • Kotzem, Daniel; Kleszczynski, Stefan; Stern, Felix; Elspaß, Arno; Tenkamp, Jochen; Witt, Gerd; Walther, Frank
    Impact of single structural voids on fatigue properties of AISI 316L manufactured by laser powder bed fusion
    In: International Journal of Fatigue Jg. 148 (2021) 106207
  • Wegner, Jan; Frey, Maximilian; Piechotta, Markus; Neuber, Nico; Adam, Bastian; Platt, Sebastian; Ruschel, Lucas; Schnell, Norman; Riegler, Sascha Sebastian; Jiang, Hao-Ran; Witt, Gerd; Busch, Ralf; Kleszczynski, Stefan
    Influence of powder characteristics on the structural and the mechanical properties of additively manufactured Zr-based bulk metallic glass
    In: Materials & Design Jg. 209 (2021) 109976
  • Frey, Maximilian; Wegner, Jan; Neuber, Nico; Reiplinger, Benedikt; Bochtler, Benedikt; Adam, Bastian; Ruschel, Lucas; Riegler, Sascha Sebastian; Jiang, Hao-Ran; Kleszczynski, Stefan; Witt, Gerd; Busch, Ralf
    Thermoplastic forming of additively manufactured Zr-based bulk metallic glass : A processing route for surface finishing of complex structures
    In: Materials & Design Jg. 198 (2021) 109368
  • Wegner, Jan; Fehr, Alexander; Platt, Sebastian; Kleszczynski, Stefan; Witt, Gerd; Tillmann, Wolfgang
    Diamond-impregnated 316L metal matrix composites fabricated by powder bed fusion with laser beam : Influences of the energy input on the microstructural properties
    In: Diamond and Related Materials Jg. 109 (2020) S. 108040
  • Tillmann, Wolfgang; Fehr, Alexander; Wegner, Jan; Stangier, Dominic; Kleszczynski, Stefan; Witt, Gerd
    LPBF-M manufactured Zr-based bulk metallic glasses coated with magnetron sputtered ZrN films
    In: Surface and Coatings Technology Jg. 386 (2020) S. 125463
  • Neubrech, Bastian; Wortberg, Johannes; Schiffers, Reinhard; Kleszczynski, Stefan; Witt, Gerd
    Neuartige Werkzeuggeometrien für die Blasfolienextrusion unter Verwendung additiver Fertigungstechnik
    In: Zeitschrift Kunststofftechnik Jg. 2020 (2020) Nr. 3, S. 81 - 107
  • Rosenthal, Stephan; Platt, Sebastian; Hölker-Jäger, Ramona; Gies, Soeren; Kleszczynski, Stefan; Tekkaya, A. Erman; Witt, Gerd
    Forming properties of additively manufactured monolithic Hastelloy X sheets
    In: Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing Jg. 753 (2019) S. 300 - 316
  • zur Jacobsmühlen, Joschka; Achterhold, Jan; Kleszczynski, Stefan; Witt, Gerd; Merhof, Dorit
    In situ measurement of part geometries in layer images from laser beam melting processes
    In: Progress in Additive Manufacturing Jg. 4 (2019) Nr. 2, S. 155 - 165
  • Schaak, Christopher; Kleszczynski, Stefan; Tillmann, Wolgang; Witt, Gerd
    Investigation of LBM-processed bimodal powder mixtures of the nickel base alloy HX and WC–Co
    In: Progress in Additive Manufacturing Jg. 4 (2019) Nr. 1, S. 43 - 54
  • Chen, Lili; Cikalova, Ulana; Bendjus, Beatrice; Gommlich, Andreas; Sudip, Shohag Roy; Schott, Carolin; Steingroewer, Juliane; Belting, Matthias; Kleszczynski, Stefan
    Laser speckle photometry - Optical sensor systems for condition and process monitoring
    In: Materials Testing: Materialprüfung Jg. 61 (2019) Nr. 3, S. 213 - 219
  • Wegner, Jan; Frey, M.; Stiglmair, P.; Kleszczynski, Stefan; Witt, Gerd; Busch, R.
    Mechanical properties of honeycomb structured zr-based bulk metallic glass specimens fabricated by laser powder bed fusion
    In: South African Journal of Industrial Engineering Jg. 30 (2019) Nr. 3, S. 32 - 40
  • Sehrt, Jan T.; Kleszczynski, Stefan; Notthoff, Christian
    Nanoparticle improved metal materials for additive manufacturing
    In: Progress in Additive Manufacturing Jg. 2 (2017) Nr. 4, S. 179 - 191
  • Beiträge in Sammelwerken und Tagungsbänden

  • Deckers, Tobias; Wolf, F.; Forêt, P.; Witt, Gerd; Kleszczynski, Stefan
    Comparative Analysis of Process Stability in PBF-LB/M : (Thermal) Highspeed Imaging vs. Melt Pool Monitoring using Novel Gas Mixtures
    In: Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium (SFF2023): An Additive Manufacturing Conference / 34th Annual International Solid Freeform Fabrication Symposium (SFF2023): 14-16 August 2023; Austin, USA 2023, S. 1021 - 1033
  • Barreto, Erika Soares; Wegner, Jan; Frey, Maximilian; Kleszczynski, Stefan; Busch, Ralf; Uhlenwinkel, Volker; Mädler, Lutz; Ellendt, Nils
    Influence Of Oxygen In The Production Chain Of Metallic Glasses Via Laser Powder Bed Fusion
    In: World PM 2022 Congress Proceedings / World PM 2022 Congress Proceedings, Lyon 09 - 13 October 2022 2022
  • Dang, David; Elspas, Arno; Cikalova, Ulana; Kleszczynski, Stefan; Bendjus, Beatrice; Witt, Gerd
    Investigation of the Roughness Influence on the Absorption Behavior of additively manufactured Metals by the Laser Speckle Photometry
    In: Proceedings of the International Spring Seminar on Electronics Technology / 44th International Spring Seminar on Electronics Technology (ISSE), 5-9 May 2021, Bautzen, Germany 2021 9467607
  • Tillmann, W.; Ferreira, M.; Schnell, Norman; Wegner, Jan; Witt, Gerd; Kleszczynski, Stefan
    Investigations on processability and material characteristics of diamond-metal composites fabricated by laser powder bed fusion
    In: Developing the powder metallurgy future: powder production, consolidation technologies, materials, applications, tools for improving PM ; Euro PM 2021 Virtual Congress & Exhibiton ; proceedings / Euro PM Congress & Exhibition; 18.-22. Oktober 2021; online / European Powder Metallurgy Association (Hrsg.) 2021
  • Schoar, Schaham; Elspaß, A.; Kleszczynski, Stefan; Dohmen, Hans-Josef; Benra, Friedrich-Karl
    Validation of a numerical model to support the design of additively manufactured aerostatic dry gas seals carried out on a test bench through use of seals with defined permeabilities
    In: 14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics / 14th European Conference on Turbomachinery Fluid dynamics & Thermodynamics, ECT14, April 12-16, 2021; virtual conference / European Turbomachinery Society (Hrsg.) 2021 ETC2021-541
  • Kleszczynski, Stefan; Elspaß, Arno
    Influence of isolated structural defects on the static mechanical properties of PBF-LB/M components
    In: 11th CIRP Conference on Photonic Technologies / LANE 2020; Virtual, Online; 7 - 10 September 2020 / Schmidt, M.; Vollertsen, F.; Govekar, E. (Hrsg.) 2020, S. 188 - 193
  • Wegner, Jan; Frey, Maximilian; Kleszczynski, Stefan; Busch, Ralf; Witt, Gerd
    Influence of process gas during powder bed fusion with laser beam of Zr-based bulk metallic glasses
    In: 11th CIRP Conference on Photonic Technologies / LANE 2020; Virtual, Online; 7 - 10 September 2020 / Schmidt, M.; Vollertsen, F.; Govekar, E. (Hrsg.) 2020, S. 205 - 210
  • Dang, David; Elspas, Arno; Cikalova, Ulana; Kleszczynski, Stefan; Bendjus, Beatrice; Witt, Gerd
    Material Characterization of Additively Manufactured Metals by Laser Speckle Photometry
    In: Proceedings of the 43rd International Spring Seminar on Electronics Technology / ISSE 2020; Demanovska Valley, Slovakia; 14 - 15 May 2020 2020, S. 9120869
  • Kleszczynski, Stefan; Ladewig, Alexander; Friedberger, K.; zur Jacobsmühlen, Joschka; Merhof, Dorit; Witt, Gerd
    Position dependency of surface roughness in parts from laser beam melting systems
    In: Proceedings - 26th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference / SFF 2015; Austin, United States; 10 - 12 August 2015 2020, S. 360 - 370
  • Schnell, Norman; Siewert, Marvin; Kleszczynski, Stefan; Witt, Gerd; Ploshikhin, Vasily
    Alternative approach on an in-situ analysis of the thermal progression during the LPBF-M process using welded thermocouples embedded into the substrate plate
    In: Solid Freeform Fabrication 2019: Proceedings of the 30th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference / SFF 2019; Austin, United States; 12 - 14 August 2019 2019, S. 1264 - 1280
  • Platt, Sebastian; Kleszczynski, Stefan; Witt, Gerd
    Einfluss von Belichtungsparametern und -strategien auf die Bruchdehnung während des pulverbettbasierten Schmelzens von Metallen
    In: Rapid.Tech + FabCon 3.D International Hub for Additive Manufacturing: Exhibition + Conference + Networking: Proceedings of the 16th Rapid.Tech Conference Erfurt, Germany, 25 – 27 June 2019 / 16th Rapid.Tech Conference, 25.-27.06.2019, Erfurt / Kynast, Michael; Eichmann, Michael; Witt, Gerd (Hrsg.) 2019, S. 183 - 196
  • Platt, Sebastian; Wegner, Jan; Kleszczynski, Stefan; Witt, Gerd
    Effect of scan strategy, re-melting and exposure time on the microstructure of stainless steel 17 - 4 PH fabricated by laser powder bed fusion of metals
    In: Proceedings of 7th International Conference on Additive Technologies iCAT 2018 / 7th International Conference on Additive Technologies iCAT 2018, Maribor, Slovenia, 10. - 11. October 2018 2018, S. 85 - 91
  • Wegner, Jan; Frey, Maximilian; Kleszczynski, Stefan; Hechler, Simon; Witt, Gerd; Busch, Ralf
    Parameterstudie zur Verarbeitung metallischer Gläser auf Zr-Basis mit dem Laser-Strahlschmelzverfahren
    In: Rapid.Tech + FabCon 3.D – International Trade Show + Conference for Additive Manufacturing: Proceedings of the 15th Rapid.Tech Conference / 15th Rapid-Tech Conference, 2018.06.07-05, Erfurt, Germany / Kynast, Michael; Eichmann, Michael; Witt, Gerd (Hrsg.) 2018, S. 345 - 360
  • Zur Jacobsmühlen, Joschka; Kleszczynski, Stefan; Witt, Gerd; Merhof, Dorit
    Compound quality assessment in laser beam melting processes using layer images
    In: Proceedings IEEE International Instrumentation and Measurement Technology Conference / I2MTC 2017; Torino; Italy; 22 May 2017 through 25 May 2017 2017, S. 7969870
  • zur Jacobsmühlen, Joschka; Kleszczynski, Stefan; Ladewig, Alexander; Witt, Gerd; Merhof, Dorit
    In-Situ Surface Roughness Measurement of Laser Beam Melted Parts – a Feasibility Study of Layer Image Analysis
    In: 3rd Fraunhofer Direct Digital Manufacturing Conference, DDMC 2016: Proceedings / Fraunhofer Direct Digital Manufacturing Conference (DDMC), 2016.03.16-17, Berlin, Germany / Müller, Bernhard (Hrsg.) 2016, S. 231 - 236
  • Sehrt, Jan T.; Kleszczynski, Stefan; Notthoff, Christian; Lau, Marcus; Gökce, Bilal; Barcikowski, Stephan
    Laser powder bed fusion of nano-wc-modified and and nano-TI02-modified metal powders
    In: 6th International Conference on Additive Technologies: iCAT 2016 ; proceedings ; Nürnberg, Germany, 29.-30. November 2016 ; DAAAM Specialized Conference / International Conference on Additive Technologies ; iCAT ; Nürnberg, Germany, 29.-30. November 2016 / Drstvenšek, Igor; Drummer, Dietmar; Schmidt, Michael (Hrsg.) 2016, S. 26 - 38
  • Zur Jacobsmuhlen, Joschka; Achterhold, Jan; Kleszczynski, Stefan; Witt, Gerd; Merhof, Dorit
    Robust calibration marker detection in powder bed images from laser beam melting processes
    In: Proceedings of the IEEE International Conference on Industrial Technology / IEEE International Conference on Industrial Technology (ICIT), 2016, 14-17 March 2016 2016, S. 910 - 915
  • Zur Jacobsmuhlen, Joschka; Kleszczynski, Stefan; Witt, Gerd; Merhof, Dorit
    Detection of elevated regions in surface images from laser beam melting processes
    In: IECON 2015 / 41th annual conference of the IEEE Industrial Electronics Societ ; Yokohama, November 9-12,2015 2015, S. 1270 - 1275
  • Reinhardt, Thomas; Kleszczynski, Stefan; Witt, Gerd
    Anpassung der Prozesskette lasergesinterter und strahlgeschmolzener Bauteile durch die Qualifizierung potentieller Nachbearbeitungsverfahren innenliegender und außenliegender Strukturen
    In: RapidTech - Fachmesse und Anwendtertagung für Rapid-Technologie: Erfurt, 14., 15. May 2014 2014
  • Kleszczynski, Stefan; Jacobsmühlen, Joschka zur; Reinarz, Bernd; Sehrt, Jan T.; Witt, Gerd; Merhof, Dorit
    Improving Process Stability of Laser Beam Melting Systems
    In: DDMC 2014: Proceedings / Fraunhofer Direct Digital Manufacturing Conference ; DDMC ; March 12 - 13, 2014, Berlin / Demmer, Axel (Hrsg.) 2014, S. 187 - 192
  • Jacobsmühlen, Joschka zur; Kleszczynski, Stefan; Witt, Gerd; Merhof, Dorit
    Robustness Analysis of Imaging System for Inspection of Laser Beam Melting Systems
    In: IEEE [International Conference on] Emerging Technologies and Factory Automation (ETFA), 2014: Barcelona, Spain, 16 - 19 September 2014 / International Conference on Emerging Technologies and Factory Automation ; 16-19 September 2014, Barcelona 2014, S. 7005262
  • Sehrt, Jan T.; Baier, Oliver; Wegner, Andreas; Kleszczynski, Stefan
    Determining The Properties Of Materials As Parts Being Created - What Are The Effects Of Additive Manufacturing Processes On Material Properties?
    In: 3D Printing & Additive Manufacturing Industrial Applications Summit 2013 2013
  • Kleszczynski, Stefan; zur Jacobsmühlen, Joschka; Sehrt, Jan T.; Witt, Gerd
    Einfluss von Prozessfehlern auf die mechanisch-technologischen Eigenschaften strahlgeschmolzener Bauteile
    In: Rapid.Tech 2013 (14. - 15. Mai 2013, Erfurt) 2013
  • Kleszczynski, Stefan; Hoeren, Karlheinz; Töppel, T.; zur Jacobsmühlen, Joschka; Müller, Bernhard; Witt, Gerd
    Handlungsfelder des additiven Fertigungsverfahrens Strahlschmelzen
    In: DVS Congress 2013: Große Schweißtechnische Tagung, DVS-Studentenkongress, 4. DVS-Forum Schulung und Prüfung ; Vorträge der Veranstaltungen in Essen vom 16. bis 21. September 2013 / DVS: Große Schweißtechnische Tagung ; (Essen) : 2013.09.16-21 2013, S. 75 - 81
  • zur Jacobsmühlen, Joschka; Kleszczynski, Stefan
    High Resolution Imaging for DMLS Inspection
    In: EOS International User Meeting 2013 (IUM); Saalfelden, 22. - 24. April 2013 2013
  • Jacobsmuhlen, Joschka Zur; Kleszczynski, Stefan; Schneider, Dorian; Witt, Gerd; zur Jacobsmuhlen, Joschka
    High resolution imaging for inspection of Laser Beam Melting systems
    In: IEEE International Instrumentation and Measurement Technology Conference (I2MTC): Proceedings / IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2013 : 6 - 9 May 2013, the Depot Renaissance Minneapolis Hotel, Minneapolis, MN 2013, S. 707 - 712
  • Kleszczynski, Stefan; Jacobsmühlen, Joschka zur; Sehrt, Jan T.; Witt, Gerd
    Mechanical properties of laser beam melting componenets depending on various process errors
    In: Digital Product and Process Development Systems: Proceedings / IFIP TC 5 International Conference, NEW PROLAMAT 2013, Dresden, Germany, October 10-11, 2013 / Kovács, George L.; Kochan, Detlef (Hrsg.) 2013, S. 153 - 166
  • Kleszczynski, Stefan; zur Jacobsmühlen, J.; Sehrt, Jan T.; Witt, Gerd
    Error Detection in Laser Beam Melting Systems by High Resolution Imaging
    In: Solid freeform fabrication proceedings / 23rd Annual International Solid Freeform Fabrication Symposium, 2012.08.06-08, Austin, Tex., USA / Bourell, David L. (Hrsg.) 2012, S. 975 - 987
  • Kleszczynski, Stefan; Witt, Gerd
    Standardisierung als Grundlage für i-manufacturing
    In: 5. Merseburger Rapid Prototyping Forum 2011
  • Dissertation

  • Kleszczynski, Stefan;
    Potenziale der bildgestützten Prozessüberwachung zur Steigerung des technologischen Reifegrades von Laser-Strahlschmelzverfahren
    Duisburg, Essen (2018) XV, 171 Blätter