Pulsed Nd:YAG Laser Micro-turning of Alumina to Study the Effect of Overlap Factors on Surface Roughness Performance

Kibria, Golam; Lepcha, Leeom P.; Shivakoti, Ishwer; Doloi, B.; Bhattacharyya, B.

doi:10.1088/1757-899x/377/1/012185

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…These morphologies are the consequence of the laser spot, rotating, and scan speed. A value that considers these parameters is the circumferential overlap percentage (COP) [25], which is defined as the following ratio:…”

Section: Morphological Analysismentioning

confidence: 99%

Laser Finishing of Ti6Al4V Additive Manufactured Parts by Electron Beam Melting

Genna

Rubino

2019

Applied Sciences

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In this work, the feasibility of laser surface finishing of parts obtained by additive manufacturing (AM) was investigated. To this end, a 450 W fiber laser (operating in continuous wave, CW) was adopted to treat the surface of Ti-6Al-4V samples obtained via electron beam melting (EBM). During the tests, different laser energy densities and scanning speeds were used. In order to assess the quality of the treatment, either the as-built or the treated samples were analyzed by means of a three-dimensional (3D) profilometer, digital microscopy, and scanning electron microscopy. Analysis of variance (ANOVA) was performed to check which and how process parameters affected the finishing. The results show that, in the best conditions, the laser treatment reduced surface roughness by about 80%.

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Section: Morphological Analysismentioning

confidence: 99%

Laser Finishing of Ti6Al4V Additive Manufactured Parts by Electron Beam Melting

Genna

Rubino

2019

Applied Sciences

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“…www.videleaf.com These morphologies are the consequence of the laser spot, rotating and scan speed. A value that considers these parameters is the Circumferential Overlap Percentage (COP) [26], which is defined as the following ratio:…”

Section: Morphological Analysismentioning

confidence: 99%

Laser Finishing of Ti6Al4V Additive Manufactured Parts by Electron Beam Melting

Genna¹,

Rubino²

2022

Which Factors Contribute to Innovative Performance? A Case Study Applied to the Food and Beverage Industry

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In this work, the feasibility of laser surface finishing of parts obtained by Additive Manufacturing (AM) was investigated. To this end, a 450W fiber laser (operating in continuous wave, CW) was adopted to treat the surface of Ti-6Al-4V samples obtained via Electron Beam Melting (EBM). During the tests, different laser energy densities and scanning speeds were used. In order to assess the quality of the treatment, either the as-built or the treated samples were analyzed by means of 3D profilometer, digital microscopy and Scanning Electron Microscopy. ANalysis of VAriance (ANoVA) was performed to check which and how the process parameters affected the finishing. The results show thatin the best conditionsthe laser treatment reduced surface roughness of about 80%.

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“…The fundamental of laser turning process is basically the same as the cutting operation, except the workpiece is machined during its rotation with a constant speed and a laser beam travels along the workpiece axis with a feed rate [1]. Although a number of studies are reported to realize the performance and viability of laser turning process [2,3], the understanding of this process is still limited and there is room for improvement on the material removal rate and workpiece quality. A major problem of laser machining processes is thermal damage, which significantly alters the machined surface and subsurface properties of workpiece.…”

Section: Introductionmentioning

confidence: 99%

Underwater Laser Turning of Commercially-Pure Titanium

Charee

Tangwarodomnukun

2020

KEM

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Underwater laser machining process is a material removal technique that can minimize thermal damage and offer a higher machining rate than the laser ablation in ambient air. This study applied the underwater method associated with a nanosecond pulse laser for turning a commercially pure titanium rod. The effects of laser power, surface speed and number of laser passes on machined depth and surface roughness were investigated in this work. The results revealed that a deeper cut depth and smoother machined surface than those obtained from the laser ablation in ambient air were achievable when the underwater laser turning process was applied. The machined depth and surface roughness were found to significantly increase with the laser power and number of laser passes. The findings of this study can disclose the insight as well as potential of the underwater laser turning process for titanium and other similar metals.

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Pulsed Nd:YAG Laser Micro-turning of Alumina to Study the Effect of Overlap Factors on Surface Roughness Performance

Cited by 5 publications

References 10 publications

Laser Finishing of Ti6Al4V Additive Manufactured Parts by Electron Beam Melting

Laser Finishing of Ti6Al4V Additive Manufactured Parts by Electron Beam Melting

Laser Finishing of Ti6Al4V Additive Manufactured Parts by Electron Beam Melting

Underwater Laser Turning of Commercially-Pure Titanium

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