An experimental investigation of laser assisted drilling process

Zhang, G.; Jiang, Chao; Zhang, S.; Wang, Y.; Chen, X.; Yu, Lu

doi:10.1179/1432891715z.0000000001889

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…[77] Hardened Steel (P20, HRC 45). machining shaft parts and high hardness materials [131]. Drilling time for stainless steel is approximately 30% shorter with laser assisted drilling than with conventional drilling [132][133][134][135][136][137][138][139][140][141][142][143][144][145].…”

Section: Lam Advantagesmentioning

confidence: 99%

State of the art review on the sustainable dry machining of advanced materials for multifaceted engineering applications: progressive advancements and directions for future prospects

Singh

Gill²,

Dogra³

et al. 2022

Mater. Res. Express

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In this article, the comprehensive review on the application, and indeed, a comparative analysis on dry machining of different types of materials (Inconel, steel, aluminum, cast iron, magnesium and advanced materials) used in machining (turning, drilling and milling operations) were carried out in the light of utmost works published in the literature. The work describes the scientific findings of the past twenty years, including sustainable methods (surface texture, solid lubricants, vibration-assisted machining, laser-assisted machining), tool coatings, and geometry of tools. Vibration-assisted machining is another direction that researchers have investigated without the use of cutting coolants, where the complete disposal of coolants is not possible. Various researchers have carried out rigorous experimental work on milling, drilling, and turning operations under dry conditions to machine numerous materials. A significant proportion of experimental data about tool wear, tool wear machining, surface quality, surface integrity, etc., has been analyzed under dry conditions. However, the critical analysis of dry machining for different conventional machining operations for a variety of industrial materials is still lacking for establishing dry machining as a sustainable process for industrial applications. Thus, the critical analysis of various machining parameters and their consequences on tool wear and the surface quality of machined work was carried out in this work. Finally, scientific recommendations based on critical findings were proposed for industrial implementation of dry machining.

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Section: Lam Advantagesmentioning

confidence: 99%

State of the art review on the sustainable dry machining of advanced materials for multifaceted engineering applications: progressive advancements and directions for future prospects

Singh

Gill²,

Dogra³

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…From the existing literature, most of the studies are on laser micromachining, viz. microdrilling (Biswas et al 2010;Kuar et al 2012;Nandi and Kuar 2015;Biswas et al 2015;Zhang et al 2015), microturning (Dhupal et al 2008;Kibria et al 2010Kibria et al , 2012Kibria et al , 2013Hao et al 2018), micromilling (Campanelli et al 2013;Mohammed et al 2017;Darwish et al 2017;Yang et al 2018) and micromarking (Shivakoti et al 2017;Kalita et al 2017;Peter et al 2013;Brihmat-Hamadi et al 2017); work in the field of laser microgrooving (Dhupal et al 2007;Kuar et al 2008) is very limited. Laser microgrooving is based on the interaction of a laser beam with the workpiece surface, non-uniform melting and ejection of material from the groove walls, and laser power reduction, as the beam propagates into the groove, can be identified as a cause for the variation in lower width and depth formation which is of prime importance to enhance the product quality.…”

Section: Introductionmentioning

confidence: 99%

Parametric optimization of Nd:YAG laser microgrooving on aluminum oxide using integrated RSM-ANN-GA approach

2018

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Nowadays in highly competitive precision industries, the micromachining of advanced engineering materials is extremely demand as it has extensive application in the fields of automobile, electronic, biomedical and aerospace engineering. The present work addresses the modeling and optimization study on dimensional deviations of square-shaped microgroove in laser micromachining of aluminum oxide (Al 2 O 3) ceramic material with pulsed Nd:YAG laser by considering the air pressure, lamp current, pulse frequency, pulse width and cutting speed as process parameters. Thirty-two sets of laser microgrooving trials based on central composite design (CCD) design of experiments (DOEs) are performed, and response surface method (RSM), artificial neural network (ANN) and genetic algorithm (GA) are subsequently applied for mathematical modeling and multi-response optimization. The performance of the predictive ANN model based on 5-8-8-3 architecture gave the minimum error (MSE = 0.000099) and presented highly promising to confidence with percentage error less than 3% in comparison with experimental result data set. The ANN model combined with GA leads to minimum deviation of upper width, lower width and depth value of − 0.0278 mm, 0.0102 mm and − 0.0308 mm, respectively, corresponding to optimum laser microgrooving process parameters such as 1.2 kgf/cm 2 of air pressure, 19.5 Amp of lamp current, 4 kHz of pulse frequency, 6% of pulse width and 24 mm/s of cutting speed. Finally, the results have been verified by performing a confirmatory test.

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“…In recent years, the LAM process has been introduced as an alternative method, which can be used e ectively in machining of hard-to-cut materials. LAM combines local heating of laser with conventional machining techniques such as grinding [1], milling [2,3], turning [4][5][6][7], drilling [8], and planning [9]. As a result of local heating, the hard material is softened and its machinability is improved, leading to higher productivity.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of low frequency pulsed Nd:YAG laser heating of slip cast fused silica ceramics for laser assisted turning process considering laser beam overlapping

2018

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Machining of ceramics often involves many challenges due to their high hardness, brittleness, and low-thermal conductivity. Laser Assisted Machining (LAM) is a promising technology for improving the machinability of hard-to-cut materials. In this work, the e ect of laser heating in the LAM process on Slip Cast Fused Silica (SCFS) ceramics is investigated by conducting a numerical thermal analysis of laser e ects on material behavior. A transient three-dimensional heat transfer analysis for Laser Assisted Turning (LAT) of SCFS is performed using nite-element method. Temperature distributions in SCFS cylindrical specimens are obtained. Moreover, the in uence of laser parameters, such as power, translational speed, and feed rate, on the temperature eld is studied. To increase the absorptivity of the ceramic surface, a coating is applied, and the absorptivity of the coated surface is determined by carrying out a series of experiments. Experiments are performed to validate the numerical transient heat transfer nite-element model. In addition, the e ects of spot overlapping of pulsed laser on temperature distribution and absorptivity of SCFS workpiece are studied. It is for the rst time that e ect of laser beam overlapping on low frequency pulsed laser heating in LAT is formulated and completely investigated.

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An experimental investigation of laser assisted drilling process

Cited by 6 publications

References 7 publications

State of the art review on the sustainable dry machining of advanced materials for multifaceted engineering applications: progressive advancements and directions for future prospects

State of the art review on the sustainable dry machining of advanced materials for multifaceted engineering applications: progressive advancements and directions for future prospects

Parametric optimization of Nd:YAG laser microgrooving on aluminum oxide using integrated RSM-ANN-GA approach

Experimental and numerical study of low frequency pulsed Nd:YAG laser heating of slip cast fused silica ceramics for laser assisted turning process considering laser beam overlapping

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