Characterization of the drilling alumina ceramic using Nd:YAG pulsed laser

Kacar, E.; Mutlu, Mehmet; Akman, Erhan; Demir, A.; Candan, Levent; Canel, Timur; Günay, Volkan; Sınmazçelik, Tamer

doi:10.1016/j.jmatprotec.2008.04.049

Cited by 96 publications

(38 citation statements)

References 16 publications

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“…The specimen B uses 246400 hexahedral elements and 254463 nodes. The calculating parameters used in this paper are given in Table 1 [4][5][6][7]. …”

Section: Mathematical Modelmentioning

confidence: 99%

Effect of Specimen Size on Laser Scribing Width and Depth of Al₂O₃Ceramics: Experiment and Numerical Simulation

2016

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Abstract. To obtain high precision and quality of laser ceramic scribing , people should consider the laser scribing parameters and the geometries of specimen size. In this paper, the effect of specimen size on laser scribing width and depth of Al 2 O 3 ceramics was simulated and verified by using ANSYS software and Diode Pumped Solid State (DPSS) laser scribing, respectively. The calculated results and the experimental results all proved that the specimen size had important effect on laser scribing width and depth due to the heat accumulation effect during laser scribing.

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“…The specimen B uses 246400 hexahedral elements and 254463 nodes. The calculating parameters used in this paper are given in Table 1 [4][5][6][7]. …”

Section: Mathematical Modelmentioning

confidence: 99%

Effect of Specimen Size on Laser Scribing Width and Depth of Al₂O₃Ceramics: Experiment and Numerical Simulation

2016

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“…There are widespread use of oxide ceramics, for example, lithium-ferrite ceramics [1][2][3], zirconium ceramics [4][5][6][7] and corundum ceramics [8][9][10]. When manufacturing of ceramics for functional and instrumental purposes, both traditional and nontraditional methods of processing finished ceramics are used.…”

Section: Introductionmentioning

confidence: 99%

Influence of a high-power pulsed ion beam on the mechanical properties of corundum ceramics

Kostenko

Pavlov

Nikolaeva

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The mechanical properties of near-surface layers of corundum ceramics treated by high-power pulsed ion beam of carbon are investigated. The samples for investigation were prepared from corundum substrate, which is usually used in microelectronic. The ion treatment was carried out at the TEMP-4M facility under the following conditions: an accelerating voltage of 160-200 keV, the current density in the pulse varied within 15-85 A/cm 2 . It was found that ion irradiation changes the structure and properties of near-surface layers of corundum ceramics. At the same time, melting and erosion of the surface layer takes place. These processes are accompanied by the formation of a network of microcracks. Microcracks are propagated only by the depth of melting layer. The mechanical properties were measured using a NanoTest600 nanohardness testing instrument. It was found that the nanohardness depends of the treatment modes. At a current density of 15A/cm 2 , with an increase treatment dose, the nanohardness of the irradiated surface layer increases in comparison with the initial value before irradiation. At higher current densities, the nanohardness of irradiated ceramics decreases relatively to the initial value before irradiation. The dependences of nanohardness off the irradiation dose in this case have the view of a curves with a minimum at irradiation doses of 2.5•10 14 and 1.3•10 14 cm -2 , for current densities of 50 and 85 A/cm 2 , respectively.

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“…A 2D axisymmetric FEM model was used to analyze the process of melting and resolidification through laser drilling, using Volume of Fluid (VOF) method to track the surface of workpiece by , Ram et al, 1994. The effects of the laser power on the hole entrance diameter of the 10.0 mm thick alumina ceramic was surveyed using pulsed Nd:YAG laser in the study of Kacar et al( Kacar et al, 2009). The hole entrance diameter and laser power were detected to have a direct relation.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Effects of Process Parameters on Laser Percussion Drilling Using Finite Element Methodology; Statistical Modelling and Optimization

Moradi

Golchin

2017

Lat. Am. j. solids struct.

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In the present research, the simulation of the Nickel-base superalloy Inconel 718 fiber-laser drilling process with the thickness of 1mm is investigated through the Finite Element Method. In order to specify the appropriate Gaussian distribution of laser beam, the results of an experimental research on glass laser drilling were simulated using three types of Gaussian distribution. The DFLUX subroutine was used to implement the laser heat sources of the models using the Fortran language. After the appropriate Gaussian distribution was chosen, the model was validated with the experimental results of the Nickel-base superalloy Inconel 718 laser drilling process. The negligible error percentage among the experimental and simulation results demonstrates the high accuracy of this model. The experiments were performed based on the Response Surface Methodology (RSM) as a statistical design of experiment (DOE) approach to investigate the influence of process parameters on the responses, obtaining the mathematical regressions and predicting the new results. Four parameters i.e. laser pulse frequency (150 to 550 Hz), laser power (200 to 500 watts), laser focal plane position (-0.5 to +0.5 mm) and the duty cycle (30 to 70%) were considered to be the input variables in 5 levels and four external parameters i.e. the hole's entrance and exit diameters, hole taper angle and the weight of mass removed from the hole, were observed to be the process output responses of this central composite design. By performing the statistical analysis, the input and output parameters were found to have a direct relation with each other. By an increase in each of the input variables, the entrance and exit hole diameters, the hole taper angel, and the weight of mass removed from the hole increase. Finally, the results of the conducted simulations and statistical analyses having been used, the laser drilling process was optimized by means of the desire ability approach. Good agreement between the simulated and the optimization results revealed that the model would be appropriate for laser drilling process numerical simulation.

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Characterization of the drilling alumina ceramic using Nd:YAG pulsed laser

Cited by 96 publications

References 16 publications

Effect of Specimen Size on Laser Scribing Width and Depth of Al₂O₃Ceramics: Experiment and Numerical Simulation

Effect of Specimen Size on Laser Scribing Width and Depth of Al₂O₃Ceramics: Experiment and Numerical Simulation

Influence of a high-power pulsed ion beam on the mechanical properties of corundum ceramics

Investigation on the Effects of Process Parameters on Laser Percussion Drilling Using Finite Element Methodology; Statistical Modelling and Optimization

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Characterization of the drilling alumina ceramic using Nd:YAG pulsed laser

Cited by 96 publications

References 16 publications

Effect of Specimen Size on Laser Scribing Width and Depth of Al2O3Ceramics: Experiment and Numerical Simulation

Effect of Specimen Size on Laser Scribing Width and Depth of Al2O3Ceramics: Experiment and Numerical Simulation

Influence of a high-power pulsed ion beam on the mechanical properties of corundum ceramics

Investigation on the Effects of Process Parameters on Laser Percussion Drilling Using Finite Element Methodology; Statistical Modelling and Optimization

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Product

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Effect of Specimen Size on Laser Scribing Width and Depth of Al₂O₃Ceramics: Experiment and Numerical Simulation

Effect of Specimen Size on Laser Scribing Width and Depth of Al₂O₃Ceramics: Experiment and Numerical Simulation