Laser beam machining (LBM), state of the art and new opportunities

Meijer, J.

doi:10.1016/j.jmatprotec.2004.02.003

Cited by 352 publications

(134 citation statements)

References 40 publications

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“…Parandoush and Hossain [10] overviewed simulation and modeling technique for LBM. Meijer [11] published the state of art in LBM in general with special emphasis on applications of short and ultra short lasers. Allen et all.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Surfaces after Non Conventional Machining

Mičietová

Neslušan

Čilliková

2016

Technological Engineering

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This paper deals with analysis of surface integrity of steel after electro discharge machining (EDM), water jet machining, (WJM) laser beam machining (LBM) and plasma beam machining (PBM). The paper discusses surface integrity expressed in surface roughness, sample precision expressed in perpendicularity deviation as well as stress state. This study also demonstrates influence of the various non-conventional methods on structure transformations and reports about sensitivity of the different nonconventional methods of machining with regard to variable thickness of machined samples.

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Section: Introductionmentioning

confidence: 99%

Investigation of Surfaces after Non Conventional Machining

Mičietová

Neslušan

Čilliková

2016

Technological Engineering

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“…Numerous additional advantages such as convenience of operation, high precision, small heat-affected zone (HAZ), minimum deformity, low level of noise, flexibility, ease of automation etc., made laser cutting to become an area of intense research and development activity in the past decade constantly attracting the attention of many researchers and practitioners. Comprehensive review papers summarizing experimental and theoretical studies, developments and opportunities for future research in laser cutting are available in the reference books [3,4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of cut quality characteristic in CO2 laser cutting stainless steel

et al. 2015

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Original scientific paper In this paper, multi-objective optimization of the cut quality characteristics in CO2 laser cutting of AISI 304 stainless steel was discussed. Three mathematical models for the prediction of cut quality characteristics such as surface roughness, kerf width and heat affected zone were developed using the artificial neural networks (ANNs). The laser cutting experiment was planned and conducted according to the Taguchi's L27 orthogonal array and the experimental data were used to train single hidden layer ANNs using the Levenberg-Marquardt algorithm. The ANN mathematical models were developed considering laser power, cutting speed, assist gas pressure, and focus position as the input parameters. Multi-objective optimization problem was formulated using the weighting sum method in which the weighting factors that are used to combine cut quality characteristics into the single objective function were determined using the analytic hierarchy process method. Keywords: analytic hierarchy process; artificial neural networks; CO2 laser cutting; cut quality characteristics; genetic algorithm; multi-objective optimization Višekriterijska optimizacija karakteristika kvalitete reza kod CO2 laserskog rezanja nehrđajućeg čelikaIzvorni znanstveni članak U ovom je radu predstavljena metodologija višekriterijske optimizacije karakteristika kvalitete reza kod CO2 laserskog rezanja AISI 304 nehrđajućeg čelika (korozijski postojanog čelika). Za predviđanje karakteristika kvalitete reza kao što su hrapavost površine reza, širina reza i zona utjecaja topline, kreirani su matematički modeli pomoću umjetnih neuronskih mreža. Eksperiment laserskog rezanja je planiran i izveden prema Taguchijevom L27 ortogonalnom nizu, a eksperimentalni podaci su korišteni za treniranje umjetnih neuronskih mreža pomoću Levenberg-Marquardtovog algoritma. Matematički modeli umjetnih neuronskih mreža su kreirani uzimajući u obzir snagu lasera, brzinu rezanja, tlak pomoćnog plina i položaj fokusa kao ulazne parametre. Problem

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“…Micro punching [5], micromechanical drilling [6], micro ultrasonic machining [7], micro electro discharge machining [8], and micro-powder injection molding [9] processes are used to manufacture high quality micro holes. Laser beam drilling is one of the advanced manufacturing processes which can drill almost all ranges of engineering materials including diamond, metallic alloys, polymer and so on [10,11]. Bharatish et al [12] investigated the effect of laser parameters such as pulse frequency, laser power, scanning speed and hole diameter on the quality of drilled holes in Alumina ceramics.…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser Power on the Quality of Drilled Micro Hole Using Cu50Zr50 Amorphous Alloys Foils

et al. 2014

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Abstract:The rapid growth of the micro-electro-mechanical systems (MEMS) is being driven by the rapid development of the micro manufacturing processes. Laser beam machining is one of the micro manufacturing processes which can shape almost all ranges of engineering materials. In this study, the effect of laser power on the quality of drilled micro holes using Cu50Zr50 amorphous alloys foils is experimentally investigated. It indicates that both entrance and exit circularities diameters increase with laser power. The circularities of the holes at the entry and the exit are in the range of 0.893 to 0.997. The taper of drilled holes increases quickly to a stable value with the increase of laser power from 60 to 110 W, then decreases quickly when the laser power becomes larger than 170 W. The micro holes with a diameter of 400 to 1200 μm are manufactured successfully by laser drilling processes. The formation mechanism of the quality of the laser drilled hole is analyzed based on the laser beam and the properties of amorphous alloys foils.

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Laser beam machining (LBM), state of the art and new opportunities

Cited by 352 publications

References 40 publications

Investigation of Surfaces after Non Conventional Machining

Investigation of Surfaces after Non Conventional Machining

Multi-objective optimization of cut quality characteristic in CO2 laser cutting stainless steel

Effect of Laser Power on the Quality of Drilled Micro Hole Using Cu50Zr50 Amorphous Alloys Foils

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