Assessment of Laser-Cut Quality on the Basis of Acoustic Emission Signals Captured with a PZT Sensor

Janez Grum; Tomaž Kek

doi:10.4028/www.scientific.net/MSF.589.215

Paper Titles

Examine of Mechanical Load of Silicone Rubber by Optical Methods
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Microstructural Changes due to Secondary Precipitation Hardening of Martensitic Creep Resistant Steel X20CrMoWV 12 1 (AISI 422)
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Electrical Examination of Silicon Nitride – Carbon Composites
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Infrared Examination of Electrically Conductor Si₃N₄ Nanocomposites
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Assessment of Laser-Cut Quality on the Basis of Acoustic Emission Signals Captured with a PZT Sensor
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Electrospinning of PVA/Carbon Nanotube Composite Nanofibers: The Effect of Processing Parameters
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Testing and Modeling the Tensile Strength Behavior of Glass Fibers, Fiber Bundles and Fiber Mat
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A Complex Measuring and Evaluation System for Determination of Forming Limit Diagrams
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Investigation of the Microstructure and Hardness of SiC_P Reinforced Aluminum Matrix Composites
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HomeMaterials Science ForumMaterials Science Forum Vol. 589Assessment of Laser-Cut Quality on the Basis of...

Assessment of Laser-Cut Quality on the Basis of Acoustic Emission Signals Captured with a PZT Sensor

Abstract:

The paper describes an analysis of the AE signals captured with PZT sensor during and after laser cutting. In the course of cutting the continuous AE signals are treated in a defined time interval. After cutting, bursts of acoustic emission will occur. They are due to solidification of the molten material and cooling of the laser-cut surface. The results shown refer to cutting of steel plate DC04 and of austenitic stainless steel plate X5CrNi18-10. Both plate types are frequently used in automobile industry, where, because of mass production, optimisation of the cutting process is desired. Numerous laser-cutting conditions assuring different quality levels of the cut made were chosen. It was proved that the laser cutting conditions had a significant influence on the amplitude value and intensity of the continuous signal and AE activity after the termination of laser cutting. Separately it was also confirmed that there was a relation between the measured signal and laser-cut quality, which is shown, to a large extent, by the presence of dross at the lower edge of the cut.