Laser Material Processing

Steen, W. M.; Mazumder, J.

doi:10.1007/978-1-84996-062-5

Cited by 735 publications

(484 citation statements)

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“…Depending on the laser power density, two main welding modes may occur, usually referred to as: conduction and keyhole modes [38]. Conduction mode is predominant when the energy density is below a threshold value depending on the material thermal and physical properties and the beam wavelength.…”

Section: High Energy Density Beamsmentioning

confidence: 99%

Welding and Joining of NiTi Shape Memory Alloys: A Review

Oliveira

Miranda

Fernandes

2017

Progress in Materials Science

255

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Section: High Energy Density Beamsmentioning

confidence: 99%

Welding and Joining of NiTi Shape Memory Alloys: A Review

Oliveira

Miranda

Fernandes

2017

Progress in Materials Science

255

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“…The selection of an appropriate gas type or a mixture of gases with a given mixing percentage is fundamental to minimize the cutting cost by increasing the cutting speed [1][2]. Changing the assist gas composition and its effect on laser cutting of 3 mm mild steel has been studied by Chen [3].…”

mentioning

confidence: 99%

Effect of CO2 laser cutting process parameters on edge quality and operating cost of AISI316L

Eltawahni

Hagino

Benyounis

et al. 2012

Optics & Laser Technology

111

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Laser cutting is a popular manufacturing process utilized to cut various types of materials economically. The width of laser cut or kerf, quality of the cut edges and the operating cost are affected by laser power, cutting speed, assist gas pressure, nozzle diameter and focus point position as well as the work-piece material. In this paper CO 2 laser cutting of stainless steel of medical grade AISI316L has been investigated. Design of experiment (DOE) was implemented by applying Box-Behnken design to develop the experiment lay-out. The aim of this work is to relate the cutting edge quality parameters namely: upper kerf, lower kerf, the ratio between them, cut section roughness and operating cost to the process parameters mentioned above. Then, an overall optimization routine was applied to find out the optimal cutting setting that would enhance the quality or minimize the operating cost. Mathematical models were developed to determine the relationship between the process parameters and the edge quality features. Also, process parameters effects on the quality features have been defined. Finally, the optimal laser cutting conditions have been found at which the highest quality or minimum cost can be achieved.

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“…The technique of direct writing involves focusing a laser beam on the target surface, creating predefined points or lines in a continuous manner -cw lasers or quasi-continuous regime pulse, high repetition lasers [5,7,15]. Micromachining of a specified pattern is realised by the movement of substrate with respect to the fixed laser beam position, or by a motion of laser head with respect to the fixed target position (Fig.…”

Section: Laser Direct Writingmentioning

confidence: 99%

Micromachining And Pattering In Micro/Nano Scale On Macroscopic Areas

Marczak

2015

Archives of Metallurgy and Materials

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This paper presents detailed discussion of selected examples of laser technologies for the modification of solid surfaces, including topographic and microstructural changes as well as both these alterations simultaneously. Laser surface micromachining has just entered the new generation of technologies that are used in surface engineering. It will be shown on the examples of applications in bioengineering, on the base of the author's own research, in modification of materials such as titanium and its alloys, diamond-like layers (DLC) deposited on silicon and polymer substrates.Keywords: lasers, surface modification, texturing, interference lithography, direct writing Artykuł przedstawia szczegółowe omówienie wybranych przykładów technologii laserowych związanych z modyfikacją powierzchni ciał stałych, obejmujących zmiany topograficzne i zmiany mikrostrukturalne, lub obie te zmiany jednocześnie. Laserowa mikroobróbka powierzchni weszła już do nowej generacji technologii, wykorzystywanych w inżynierii powierzchni. Zostanie to pokazane, na podstawie prac własnych, na przykładach zastosowań w bioinżynierii, w modyfikacji takich materiałów jak tytan i jego stopy oraz warstwy diamentopodobne (DLC) naniesione na podłoże krzemowe i polimerowe.

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Laser Material Processing

Cited by 735 publications

References 0 publications

Welding and Joining of NiTi Shape Memory Alloys: A Review

Welding and Joining of NiTi Shape Memory Alloys: A Review

Effect of CO2 laser cutting process parameters on edge quality and operating cost of AISI316L

Micromachining And Pattering In Micro/Nano Scale On Macroscopic Areas

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