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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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Journal ArticleDOI
Modelling and Analysis of UV Laser Micromachining of Copper
Wei Zhang,Y. L. Yao,Kai Chen +2 more
TL;DR: An axisymmetric model is developed which allows consideration of laser beam distribution and its coupling with the target material, and the model uses an enthalpy method to track the solid/liquid interface.
Journal ArticleDOI
Striation-free laser cutting of mild steel sheets
Lin Li,M. Sobih,Philip Crouse +2 more
TL;DR: In this paper, a 1 kW single mode fiber laser was used to achieve high-speed, striation-free laser cutting of EN43 mild steel sheets of 2 mm thickness.
Journal ArticleDOI
Prediction of melt geometry in laser cutting
TL;DR: In this article, an analytical model for the evaluation of the melt film geometry in laser cutting of steels is developed using as basis, a previous model for kerf geometry estimation developed by the authors, with both reactive and nonreactive process gases, the film thickness and velocity were determined as a function of the kerf depth in the cutting plate.
Journal ArticleDOI
Ultrasonic vibration-assisted femtosecond laser machining of microholes
Hongyu Zheng,Han Huang +1 more
TL;DR: In this paper, the authors describe an approach to improving laser hole drilling quality by exciting the work material with a high frequency ultrasonic vibrator during a femtosecond laser drilling process.