Finite element analysis and simulation of liquid-assisted laser beam machining process

Mistry, Vinit; James, Sagil

doi:10.1007/s00170-017-1009-3

Cited by 14 publications

(7 citation statements)

References 17 publications

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“…The LBMM process has demonstrated its capability in machining smart ceramic materials at the macroscale [4]. LBMM is performed in air, and it uses the thermal energy of the laser beam to ablate material from metallic or nonmetallic materials, as shown in Figure 1a [5]. The laser beam is directed towards the substrate surface through a focusing lens to obtain a beam with a micron scale spot size.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Modeling Study of Liquid-Assisted—Laser Beam Micromachining of Smart Ceramic Materials

Parmar

James

2018

JMMP

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Smart ceramic materials are next generation materials with the inherent intelligence to adapt to change in the external environment. These materials are destined to play an essential role in several critical engineering applications. Machining these materials using traditional machining processes is a challenge. The laser beam micromachining (LBMM) process has the potential to machine such smart materials. However, laser machining when performed in air induces high thermal stress on the surface, often leading to crack formation, recast and re-deposition of ablated material, and large heat-affected zones (HAZ). Performing laser beam machining in the presence of a liquid medium could potentially resolve these issues. This research investigates the possibility of using a Liquid Assisted-Laser Beam Micromachining (LA-LBMM) process for micromachining smart ceramic materials. Experimental studies are performed to compare the machining quality of laser beam machining process in air and in a liquid medium. The study reveals that the presence of liquid medium helps in controlling the heat-affected zone and the taper angle of the cavity drilled, thereby enhancing the machining quality. Analytical modeling is developed for the prediction of HAZ and cavity diameter both in air and underwater conditions, and the model is capable of predicting the experimental results to within 10% error.

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Section: Introductionmentioning

confidence: 99%

Experimental and Modeling Study of Liquid-Assisted—Laser Beam Micromachining of Smart Ceramic Materials

Parmar

James

2018

JMMP

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“…Performing the LBMM process in a liquid medium is a potential approach to overcome these limitations of the LBMM process [9]. The process known as Liquid-Assisted Laser Beam Micromachining (LA-LBMM) is capable of micromachining materials with features ranging from 100 to 500 µm with reduced thermal damage, with relatively narrow kerf width, and a reduced re-deposition of debris [10,11].…”

Section: Introductionmentioning

confidence: 99%

“…The LA-LBMM process can be performed both in static mode (still water) and dynamic mode (flowing water) [13]. Studies have reported that the liquid layer helps in cooling the workpiece, which minimizes the HAZ formation during the machining process [10,11,13,14]. During static mode, which minimizes the HAZ formation during the machining process [10,11,13,14].…”

Section: Introductionmentioning

confidence: 99%

“…Studies have reported that the liquid layer helps in cooling the workpiece, which minimizes the HAZ formation during the machining process [10,11,13,14]. During static mode, which minimizes the HAZ formation during the machining process [10,11,13,14]. During static mode, the molten debris re-deposit on the machined area, which piles up in the center and is removed by subsequent laser energy [13].…”

Section: Introductionmentioning

confidence: 99%

“…Experimental studies fail to provide a clear understanding of the material removal mechanisms involved in the LA-LBMM process considering the complexities and dynamic nature of the process at the micron scale. In the past, the finite element analysis (FEA) technique is used to understand the mechanisms involved in the LA-LBMM process [10,19]. One study used FEA tool ANSYS and found that the liquid medium significantly reduced the HAZ for sub-millimeter thick water film [10].…”

Section: Introductionmentioning

confidence: 99%

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Molecular Dynamics Simulation Study of Liquid-Assisted Laser Beam Micromachining Process

Menon

James

2018

JMMP

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Liquid Assisted Laser Beam Micromachining (LA-LBMM) process is an advanced machining process that can overcome the limitations of traditional laser beam machining processes. This research involves the use of a Molecular Dynamics (MD) simulation technique to investigate the complex and dynamic mechanisms involved in the LA-LBMM process both in static and dynamic mode. The results of the MD simulation are compared with those of Laser Beam Micromachining (LBMM) performed in air. The study revealed that machining during LA-LBMM process showed higher removal compared with LBMM process. The LA-LBMM process in dynamic mode showed lesser material removal compared with the static mode as the flowing water carrying the heat away from the machining zone. Investigation of the material removal mechanism revealed the presence of a thermal blanket and a bubble formation in the LA-LBMM process, aiding in higher material removal. The findings of this study provide further insights to strengthen the knowledge base of laser beam micromachining technology.

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Study on multiscale modeling and simulation of liquid-assisted laser beam machining process

James

Patil

2020

Int J Adv Manuf Technol

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Finite element analysis and simulation of liquid-assisted laser beam machining process

Cited by 14 publications

References 17 publications

Experimental and Modeling Study of Liquid-Assisted—Laser Beam Micromachining of Smart Ceramic Materials

Experimental and Modeling Study of Liquid-Assisted—Laser Beam Micromachining of Smart Ceramic Materials

Molecular Dynamics Simulation Study of Liquid-Assisted Laser Beam Micromachining Process

Study on multiscale modeling and simulation of liquid-assisted laser beam machining process

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