Influence of dry and wet environments during fiber laser processing of metallic substrate under a neoteric scan mode

Panigrahi, Debasish; Patel, Saroj Kumar

doi:10.1016/j.optlastec.2022.108921

Cited by 13 publications

(2 citation statements)

References 42 publications

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“…Microgroove width, depth, material removal rate and heat affected zone were optimized through the response surface method to achieve accurate micromachining. Panigrahi et al [22] introduced a neoteric scan approach to study some distinct variables (orbit diameter, orbit gap delay) and their possible effects on the key attributes, such as size, material removal, and surface imperfections. Amsellem et al [23] developed several wobble patterns using laser micro machining on silicon carbide block.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on fiber laser micro drilling of Titanium grade 5: fabrication, nature-inspired optimization and analysis through image processing

Kar,

Goswami

2024

Eng. Res. Express

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This investigation showed that micro holes were created on Titanium grade 5 substrate surface using a 30 W fiber laser. The impact of the control factors such as scan speed, frequency, number of passes and power were studied on the responses namely heat affected zone (HAZ), hole circularity (HC) and deviation in diameter (DIV). The control factors were optimized using firefly algorithm. Mathematical models were developed for each response having significant R-square value. 3D surface plots were used to examine how the control parameters affected the response. The firefly algorithm identifies the optimal conditions for micro drilling as scan speed of 210 mm/s, frequency of 40 kHz, power of 8 W and total of 40 passes which improved experimental findings i.e. HC-0.974, DIV-37.02 µm and HAZ-19.53. After comparing the predicted values with the experimental findings, it was observed that the prediction error is lowest for HC (1.23 %) followed by DIV (13.9 %) and HAZ (16.9 %). Image processing technique was used to convert regular images into a digital format to extract useful information.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation on fiber laser micro drilling of Titanium grade 5: fabrication, nature-inspired optimization and analysis through image processing

Kar,

Goswami

2024

Eng. Res. Express

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“…Also, laser micromachining was extended to create microchannels on silicon wafers by Zhang et al [14].and on PMMA by Prakash and Kumar [15] using femtosecond lasers. Fiber laser has also been utilized to micromachine thin NiTi tubes for the fabrication of vascular stents by Liu et al [16] and stainless-steel sheets of 1 mm thickness for biomedical applications by Panigrahi and Patel [17].…”

Section: Introductionmentioning

confidence: 99%

Investigation of laser-assisted micromachining of NiTi SMA bimorph based actuators toward developing optical shutters

Gangwar,

Pandiyan,

Iyamperumal Anand

2024

J. Micromech. Microeng.

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This work explores laser-assisted micromachining for the precision cutting of NiTi SMA-based bimorph in a single-pass laser scan. NiTi SMA bimorph was fabricated using the e-beam evaporation technique followed by micromachining using a 1064 nm fiber laser. The influence of laser power, laser speed, spot diameter, and laser travel direction on kerf width and heat-affected zone after micromachining was studied using the design of experiments. The optimized parameter for micromachining was at laser power 5 W with 5 mm/s laser speed and 50 μm spot diameter. Various shapes were cut at the optimized parameter, including an optical shutter of a diameter of 30 mm. A laser speed of 6 mm/s has produced microchannels in the bimorph due to NiTi film removal only. The SEM analysis of the shutter reveals the formation of refined grains at micromachined edges compared to the center of the actuator. Fabricated optical shutter shows negligible optical transmittance in the 450 to 700 nm wavelength range.

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Transient Melt Pool Dynamics Analysis of AZ31B Magnesium Alloy Based on ARMLPW Process

Liu,

Hu,

Ouyang

et al. 2024

Learning and Analytics in Intelligent Systems

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Influence of dry and wet environments during fiber laser processing of metallic substrate under a neoteric scan mode

Cited by 13 publications

References 42 publications

Experimental investigation on fiber laser micro drilling of Titanium grade 5: fabrication, nature-inspired optimization and analysis through image processing

Experimental investigation on fiber laser micro drilling of Titanium grade 5: fabrication, nature-inspired optimization and analysis through image processing

Investigation of laser-assisted micromachining of NiTi SMA bimorph based actuators toward developing optical shutters

Transient Melt Pool Dynamics Analysis of AZ31B Magnesium Alloy Based on ARMLPW Process

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