CONTROL OF LASER PROCESSING OF STRUCTURAL MATERIALS USING THERMAL IMAGING AND SPECTRAL TECHNOLOGY

The possibilities of thermal imaging and spectral technology in organization of the control of laser technological processes of high-temperature modification of structural materials are analyzed. It is shown that the application of thermal imaging technology is reasonable when adjusting these processes. For continuous control it is more perspective to apply small spectral technique. Solutions are proposed that allow continuous monitoring on the basis of determination of two parameters: the effective heating temperature Te of the treated surface in the area of influence of laser radiation and parameter a associated with the effective heating area. It is shown that introduction of small-sized spectral devices for continuous monitoring into the feedback loop of the control system for laser set-ups is promising.

[1]  A. Smolarz,et al.  Multispectral High Temperature Thermography , 2022, Sensors.

[2]  J. Bergheau,et al.  Experimental Study of Thermomechanical Processes: Laser Welding and Melting of a Powder Bed , 2020, Crystals.

[3]  S. T. Amancio-Filho,et al.  Stability of a Melt Pool during 3D-Printing of an Unsupported Steel Component and Its Influence on Roughness , 2020, Materials.

[4]  F. Calignano,et al.  A Metal Powder Bed Fusion Process in Industry: Qualification Considerations , 2019, Machines.

[5]  Qiuyue Sheng,et al.  High Mechanical Performance Based on Physically Linked Double Network (DN) Hydrogels , 2019, Materials.

[6]  M. Yakout,et al.  A Review of Metal Additive Manufacturing Technologies , 2018, Solid State Phenomena.

[7]  John Stavridis,et al.  Quality assessment in laser welding: a critical review , 2017, The International Journal of Advanced Manufacturing Technology.

[8]  Andrey V. Gusarov,et al.  Evaporation-induced gas-phase flows at selective laser melting , 2018 .

[9]  Bianca Maria Colosimo,et al.  On the use of spatter signature for in-situ monitoring of Laser Powder Bed Fusion , 2017 .

[10]  Ming Jiang,et al.  Study of laser precision ablating texture patterns on large-scale freeform surface , 2017 .

[11]  A. Gusarov,et al.  New Approach of True Temperature Restoration in Optical Diagnostics Using IR-Camera , 2017, Journal of Thermal Spray Technology.

[12]  D. Dagel,et al.  Measurement of Laser Weld Temperatures for 3D Model Input , 2016 .

[13]  Richard Leach,et al.  Review of in-situ process monitoring and in-situ metrology for metal additive manufacturing , 2016 .

[14]  Antonio Ancona,et al.  A Real-Time Spectroscopic Sensor for Monitoring Laser Welding Processes , 2009, Sensors.

[15]  H. Helvajian.  Laser Material Processing in the Micro and Nanometer Domains: Past, Present and Possibly the Future , 2009 .

[16]  P. W. Fuerschbach,et al.  Probing temperature during laser spot welding from vapor composition and modeling , 2003 .

[17]  J. Dowden.  The Theory of Laser Materials Processing , 2009 .