Dr.-Ing. Johannes Koal
Person

Affiliations

Chair of Joining Technology and Assembly
- Academic Staff
- johannes.koal@tu-dresden.de

Identification Numbers

ORCID	0000-0003-0763-552X
Scopus author ID	57219570939

Extending the life of aluminum spot welding electrodes through oxide layer disruption

Heilmann, S., Tulke, M., Mathiszik, C., Baumgarten, M., Koal, J., Brosius, A. & Füssel, U. & 1 others, Schmale, H. C., 12 Oct 2025, In: Welding in the world.

Research output: Contribution to journal › Research article › Contributed › peer-review

Vorrichtung zur Prozessüberwachung beim Widerstandspunktschweißen und Widerstandsbuckelschweißen

Koal, J. (Inventor), Nikolov, C. (Inventor), Mathiszik, C. (Inventor) & Schmale, H. C. (Inventor), 17 Jul 2025, Deutsche Patent- und Markenamt (DPMA), Patent No. DE102024200340A1, 15 Jan 2024, Priority date 15 Jan 2024, Priority No. DE102024200340A

Research output: Intellectual property › Patent application/Patent

Acoustic process monitoring during projection welding using airborne sound analysis and machine learning

Koal, J., Baumgarten, M., Nikolov, C., Mathiszik, C., Schmale, H. C. & Ramakrishnan, S., Feb 2025, In: Welding in the world. 69, 2, p. 459-470 12 p.

Research output: Contribution to journal › Research article › Contributed › peer-review

Influence of experience level on determining weld diameter in resistance spot welding

Mathiszik, C., Nopper, B., Koal, J., Füssel, U. & Schmale, H. C., Feb 2025, In: Welding in the world. 69, 2, p. 483-497 15 p.

Research output: Contribution to journal › Research article › Contributed › peer-review

Kondensatorentladungsschweißen von Kupfer- und Kupfer-Mischbauteilen für Anwendungen in der Energiewende

Zschetzsche, J., Baumgarten, M., Koal, J., Schmale, H. C., Roschke, T. & Winkler, J., 2025, Kupfer-Symposium 2025: 12. bis 13. November 2025, Werkstofftagung in Schwäbisch Gmünd.

Research output: Contribution to book/Conference proceedings/Anthology/Report › Conference contribution › Contributed

View all research output (24)

Extending the Life of Aluminum Spot Welding Electrodes through Oxide Layer Disruption

Heilmann, S. B. (Speaker), Tulke, M. (Involved person), Mathiszik, C. (Involved person), Baumgarten, M. (Involved person), Koal, J. (Involved person), Brosius, A. (Involved person), Füssel, U. (Involved person), Schmale, H. C. (Involved person)

11 Feb 2025

Activity: Talk or presentation at external institutions/events › Talk/Presentation › Contributed

Lokale Widerstandsmessungen an Punktschweißelektroden

Heilmann, S. B. (Speaker), Merx, M. (Involved person), Cramer, A. (Involved person), Baumgarten, M. (Involved person), Koal, J. (Involved person), Müller, J. (Involved person), Ihlenfeldt, S. (Involved person), Füssel, U. (Involved person), Schmale, H. C. (Involved person)

5 Oct 2023

Activity: Talk or presentation at external institutions/events › Talk/Presentation › Contributed

Automated local resistance measurements of resistance spot welding electrodes for aluminium alloys to characterize the electrode wear

18 Jul 2023

Activity: Talk or presentation at external institutions/events › Talk/Presentation › Contributed

View all activities (3)

Research Portal of the TU Dresden

Dr.-Ing. Johannes Koal
Person

Affiliations

Identification Numbers

Related content

Extending the life of aluminum spot welding electrodes through oxide layer disruption

Vorrichtung zur Prozessüberwachung beim Widerstandspunktschweißen und Widerstandsbuckelschweißen

Acoustic process monitoring during projection welding using airborne sound analysis and machine learning

Influence of experience level on determining weld diameter in resistance spot welding

Kondensatorentladungsschweißen von Kupfer- und Kupfer-Mischbauteilen für Anwendungen in der Energiewende

Extending the Life of Aluminum Spot Welding Electrodes through Oxide Layer Disruption

Lokale Widerstandsmessungen an Punktschweißelektroden

Automated local resistance measurements of resistance spot welding electrodes for aluminium alloys to characterize the electrode wear