Journal ArticleDOI
Laser beam machining—A review
Avanish Kumar Dubey,Vinod Yadava +1 more
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TLDR
The experimental and theoretical studies of LBM show that process performance can be improved considerably by proper selection of laser parameters, material parameters and operating parameters, and the trend for future research is outlined.Abstract:
Laser beam machining (LBM) is one of the most widely used thermal energy based non-contact type advance machining process which can be applied for almost whole range of materials. Laser beam is focussed for melting and vaporizing the unwanted material from the parent material. It is suitable for geometrically complex profile cutting and making miniature holes in sheetmetal. Among various type of lasers used for machining in industries, CO2 and Nd:YAG lasers are most established. In recent years, researchers have explored a number of ways to improve the LBM process performance by analysing the different factors that affect the quality characteristics. The experimental and theoretical studies show that process performance can be improved considerably by proper selection of laser parameters, material parameters and operating parameters. This paper reviews the research work carried out so far in the area of LBM of different materials and shapes. It reports about the experimental and theoretical studies of LBM to improve the process performance. Several modelling and optimization techniques for the determination of optimum laser beam cutting condition have been critically examined. The last part of this paper discusses the LBM developments and outlines the trend for future research.read more
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References
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Proceedings ArticleDOI
CO2 laser milling of hard tissue
Martin Werner,Martin Werner,Mikhail Ivanenko,Daniela Harbecke,Daniela Harbecke,Manfred Klasing,H. Steigerwald,H. Steigerwald,Peter Hering,Peter Hering +9 more
TL;DR: In this article, the authors used a CO2 laser (10.6 mm) with a PC-controlled galvanic beam scanner and with a fine water-spray, which helps to avoid thermal side-effects.
Journal ArticleDOI
Comparison of the performance obtained with a YAG laser cutting according to the source operation mode
Dominique Grevey,H. Desplats +1 more
TL;DR: In this paper, the cutting performance of continuous and pulsed YAG laser equipment is compared in terms of the energy supplied by the source per volume of treated material, and it appears that continuous equipment offers a better performance as regards operating speed, pulsed sources being penalized mainly by their low filling rate.
Journal ArticleDOI
Structural analysis of the heat affected zone of marble and limestone tiles cut by CO2 laser
TL;DR: In this article, the structural modifications observed on the cut surfaces produced with CO2 lasers in commercial tiles of calcitic marble and limestone were investigated and it was found that the cut surface quality is very much dependent on the chemical and mineralogical compositions of the stone, namely, the chemical composition of calcite and on the degree of crystallinity on the rock.
Journal ArticleDOI
An energy based model for laser cutting natural stone
Sandro Turchetta,Luigi Carrino +1 more
TL;DR: In this article, an analytical model for cutting natural stones with CO 2 laser is presented, which determines the shape and dimension of kerf geometry on a rectilinear path, using such variables as the thermo-physical characteristics of the marble, the characteristics of laser beam and the variables of the process.
Proceedings ArticleDOI
Via formation in green ceramic dielectrics using a YAG laser
TL;DR: In this article, a high-speed laser drilling process has been developed for producing fine-pitch vias of dimensions equivalent to fine-line screen printed conductors, which have been demonstrated on thick film and Green Tape dielectrics using an Nd:YAG laser.