Methods for Monitoring of Laser Cutting by Means of Acoustic and Photodiode Sensors

Keuster, Johan De; Duflou, Joost; Kruth, Jean Pierre

doi:10.4028/0-87849-972-5.809

Cited by 4 publications

(1 citation statement)

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“…This holds for laser marking [1], engraving, laser milling [2,3], laser drilling [4][5][6], laser cutting [7,8], enhancement of surface morphology [9,10] or surface hardness, or for the generation of three-dimensional (3D) parts [11]. Yet, laser erosion is a comparatively new technology.…”

Section: Introductionmentioning

confidence: 99%

Investigation of laser and process parameters for Selective Laser Erosion

Yasa

Kruth

2010

Precision Engineering

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Section: Introductionmentioning

confidence: 99%

Investigation of laser and process parameters for Selective Laser Erosion

Yasa

Kruth

2010

Precision Engineering

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Monitoring and adaptive control of CO2 laser flame cutting

et al. 2010

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Development of a real time monitoring and adaptive control system for laser flame cutting

Duflou¹,

Sichani²,

Keuster³

et al. 2009

International Congress on Applications of Lasers &Amp; Electro-Optics

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A real-time, adaptive control and optimization system for laser flame cutting of thick plates of mild steel has been developed. The proposed system consists of two subsystems: a process monitoring system and a control and optimization system. The first subsystem aims at the on-line observation of the process status and corresponding cut quality. Since the different cut quality characteristics (e.g. cutting edge striations or dross) cannot be measured directly, the proposed system is based on so-called sensing parameters, which are easily-observable physical parameters that correlate well with the quality characteristics of the cut surface. The applicability of different optical sensors (photodiodes and a NIR-camera) has been investigated. The most optimal configuration of the process monitoring system is presented, including an overview of the selected set of sensing parameters. The second subsystem, the real-time control and optimization system, supports the adaptation of the process parameters, based on the cut quality information obtained from the process monitoring system. A suitable hardware configuration for the real-time control and optimization is presented, starting from the original platform (i.e. an industrial 2D laser cutting machine). A generic expert strategy, has been designed for the control and optimization purpose. Using the developed experimental platform, the performance of the expert system was verified and optimized for different material-thickness combinations. The obtained results demonstrate the effectiveness of the chosen approach in terms of increased autonomy, productivity, and efficiency of the process, as well as elimination of the need for manual quality control and the possibility to automatically generate quality reports.

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Methods for Monitoring of Laser Cutting by Means of Acoustic and Photodiode Sensors

Cited by 4 publications

References 0 publications

Investigation of laser and process parameters for Selective Laser Erosion

Investigation of laser and process parameters for Selective Laser Erosion

Monitoring and adaptive control of CO2 laser flame cutting

Development of a real time monitoring and adaptive control system for laser flame cutting

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