Influence of the Real Geometry of the Laser Cut Front on the Absorbed Intensity and the Gas Flow

  • Oliver BocksrockerEmail author
  • Peter Berger
  • Florian Fetzer
  • Volker Rominger
  • Thomas Graf


The numerical investigations on experimentally determined cut front geometries presented in this paper show that the absorbed intensity reacts more sensitively to small local changes of the angle of the cut front than the gas velocity and the pressure. It is also found that the absorbed intensities near the top and the bottom of the cut front increase significantly when the initially regular process at high cutting speeds turns into the regime with interrupted striation patterns on the surface of the cutting edge.


Laser cutting Gas flow Absorbed intensity Interrupted striations 



The authors would like to thank the Graduate School of Excellence advanced Manufacturing Engineering (GSaME) of the University of Stuttgart for its support of this research. In addition, we would like to thank the company TRUMPF, namely Dr. Tobias Häcker, who supported this work with numerical calculations.


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Authors and Affiliations

  1. 1.Graduate School of Excellence Advanced Manufacturing Engineering (GSaME)University of StuttgartStuttgartGermany
  2. 2.Institut für Strahlwerkzeuge (IFSW)University of StuttgartStuttgartGermany
  3. 3.TRUMPF Werkzeugmaschinen GmbH + Co.KGDitzingenGermany

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