Investigation of Ultrasonic Vibration Assisted Powder Mixed Electrical Discharge Machining for Antibacterial Coating on Implant Surfaces

Bui, Viet D.; Boehme, Vicky; Mwangi, James Wamai; Berger, Thomas; Schubert, Andreas

doi:10.1016/j.procir.2020.01.159

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…In case of CDM, a maximum MRR was recorded when Cu was employed as the electrode followed by the Br and Gr electrode. Because of the high thermal conductivity of Cu electrode and lower dielectric strength of the fluid, high spark recurrence rate can be sustained in a tiny machining area, which enhances the MRR [39].…”

Section: Influence Of Various Process Parameters On the Mrr Of Az91 H...mentioning

confidence: 99%

Electric Discharge Machining of AZ91 Magnesium Hybrid Composites under Different Dielectric Mediums

Prakash¹,

Ranjith²,

Mohan

et al. 2022

Advances in Materials Science and Engineering

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In this work, an attempt was made to machine the AZ91/5B4C/5Gr hybrid composites in a castor oil electric discharge medium with an objective of attaining green environment. The hybrid composites were produced using stir casting technique in a protective environment. Experiments were conducted by varying dielectric fluid (castor oil and hydrocarbon oil), tool materials (copper, graphite, and brass), polarity, current, pulse-on time, and gap distance in Al2O3 mixed dielectric medium. L36 Taguchi approach was adopted for the design of experiments, and machining performance was accessed in terms of material removal rate (MRR), tool wear rate (TWR), and surface roughness (Ra). Because of castor oil’s high thermal conductivity, high kinematic viscosity, and lower dielectric strength, the specimen exhibits 5% higher MRR than EDM oil. When the electrodes were connected to the negative polarity, the Ra was 1.72 μm and 3.66 μm at positive polarity; however, at negative polarity, the TWR was higher than the MRR. The high density and specific heat of castor oil facilitate flushing and uniform heat distribution; as a result, the composite had a Ra of 2.52 μm compared to 2.86 μm when machined with conventional EDM oil. Surface topography showed the specimen machined with hydrocarbon dielectric medium proffers black spots, which were eliminated in castor dielectric medium. Best parametric combination was selected by the Relative Index Method optimization technique.

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Section: Influence Of Various Process Parameters On the Mrr Of Az91 H...mentioning

confidence: 99%

Electric Discharge Machining of AZ91 Magnesium Hybrid Composites under Different Dielectric Mediums

Prakash¹,

Ranjith²,

Mohan

et al. 2022

Advances in Materials Science and Engineering

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Artificial intelligence for experimental investigation and optimal process parameter selection in PM-EDM of nimonic alloy 901

Penmetsa,

Ilanko

2023

Journal of Engineering Research

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Developments in Powder Mixed EDM and its perspective Application for targeted Surface Modification

et al. 2022

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Investigation of Ultrasonic Vibration Assisted Powder Mixed Electrical Discharge Machining for Antibacterial Coating on Implant Surfaces

Cited by 3 publications

References 7 publications

Electric Discharge Machining of AZ91 Magnesium Hybrid Composites under Different Dielectric Mediums

Electric Discharge Machining of AZ91 Magnesium Hybrid Composites under Different Dielectric Mediums

Artificial intelligence for experimental investigation and optimal process parameter selection in PM-EDM of nimonic alloy 901

Developments in Powder Mixed EDM and its perspective Application for targeted Surface Modification

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