Underwater-laser drilling of aluminum

Krstulović, Nikša; Shannon, Sharon; Stefanuik, Robert; Fanara, C.

doi:10.1007/s00170-013-5141-4

Cited by 91 publications

(31 citation statements)

References 39 publications

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“…Laser ablation of metals is increasing in popularity because of its rapid and simple procedure [5,6]. The need for lasers has grown with the increased addition of microsized holes on aero-engines [7].…”

Section: Introductionmentioning

confidence: 99%

Comparison of the simulation and experimental of hole characteristics during nanosecond-pulsed laser drilling of thin titanium sheets

Ren

Jiang

Liú

et al. 2014

Int J Adv Manuf Technol

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This paper reports theoretical and experimental results of drilling titanium sheets with a thickness of 0.2 mm using a nanosecond-pulsed laser. To describe morphological changes and the temperature distribution during nanosecond laser drilling, a physical model was established using ANSYS parametric design language (APDL) with life and death technology of ANSYS software. The influences of laser parameters such as laser energy and pulse number on the dimensions (depth and diameter) of the drilled holes were investigated with optical microscope. The crater depth and diameter could be increased by increasing the number of laser pulses and laser energy with some defects. Compared with experimental results, numerical results show slight difference, which is in the acceptable range.

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Section: Introductionmentioning

confidence: 99%

Comparison of the simulation and experimental of hole characteristics during nanosecond-pulsed laser drilling of thin titanium sheets

Ren

Jiang

Liú

et al. 2014

Int J Adv Manuf Technol

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“…Thus, the water film should be thick enough to facilitate the particles flushing and workpiece cooling, but it should not be too thick to cause a significant absorption of laser intensity in water. Based on several reports [3][4][5][6]14,15], the water layer thickness applied in the underwater laser ablation can range from 0.5 to 4 mm depending on the laser wavelength and workpiece materials being cut. Using a thicker water layer is, however, possible as long as higher laser energy is applied to the process.…”

Section: Laser Ablation In a Thin-flowing Water Layermentioning

confidence: 99%

“…Water is normally used to assist the process due to its high thermal conductivity, recyclability and cheap. The whole workpiece or only the surface of workpiece to be ablated by laser has to be submerged in water [1][2][3][4][5] or covered by a layer of water [4,6,7], where the laser ablation takes place in the confined volume of water. Since water can exponentially absorb the energy of laser with its travelling distance in water regarding the Beer-Lambert's law, the water layer has to be thin enough to cause less loss of laser intensity.…”

Section: Introductionmentioning

confidence: 99%

Cavity formation and surface modeling of laser milling process under a thin-flowing water layer

Tangwarodomnukun

2016

Applied Surface Science

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“…Krstulovic et al performed underwater laser ablation of aluminum using pulsed Nd:YAG laser and compared the effect of different water layer thickness with air. It was observed that underwater laser drilling provides better efficiency as well as better quality holes in terms of shape, volume, and roughness compared to drilling in air [33]. As seen from the above literature review, less work is done regarding performance of Q-switched Nd:YAG UW-LBμM to fabricate microchannel in stainless steel.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of underwater laser beam micromachining (UW-LBμM) on 304 stainless steel

Behera

Sankar

Swaminathan

et al. 2016

Int J Adv Manuf Technol

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Fabrication of miniaturized components provides a challenge to the manufacturing industries and to meet the challenges many unconventional machining methods are developed, among which laser beam micromachining (LBμM) is one. But, thermal effects such as recast layer, heat-affected zone (HAZ), debris, and thermal cracks are commonly observed in LBμM. So, in order to minimize the thermal effects, underwater laser beam micromachining (UW-LBμM) came into existence. In this paper, experiment on UW-LBμM is reported using a Q-switched Nd:YAG laser for fabricating microchannels on 304 stainless steel. The effect of input process parameters (scanning speed, number of scan, laser pulse energy) on output responses (kerf width, kerf depth, surface roughness) of microchannel is studied. Laser micromachined channels are characterized by using optical microscopy, surface profilometer, scanning electron microscopy, and energy dispersive X-ray spectroscopy. It is observed that the dimensions of kerf width and kerf depth are low at lower number of scan, laser pulse energy, and higher scanning speed. The surface roughness decreases with decrease in number of scan and increase in laser pulse energy. Minimum surface roughness is achieved at scanning speed of 300 μm/s. The recast layer and debris are minimum during UW-LBμM compared to LBμM. Elemental comparison is carried out inside and in the surroundings of microchannel.

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Underwater-laser drilling of aluminum

Cited by 91 publications

References 39 publications

Comparison of the simulation and experimental of hole characteristics during nanosecond-pulsed laser drilling of thin titanium sheets

Comparison of the simulation and experimental of hole characteristics during nanosecond-pulsed laser drilling of thin titanium sheets

Cavity formation and surface modeling of laser milling process under a thin-flowing water layer

Experimental investigation of underwater laser beam micromachining (UW-LBμM) on 304 stainless steel

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