Kamlakar P Rajurkar
University of Nebraska–Lincoln
Surface roughnessManufacturing engineeringEngineeringElectrical discharge machiningSurface micromachiningComposite materialNanotechnologyMetallurgyMaterials scienceEngineering drawingElectronic engineeringTool wearElectrochemical machiningUltrasonic machiningNano-Cutting toolNanoscopic scaleMachiningMechanical engineeringProcess (computing)
138Publications
48H-index
4,559Citations
Publications 132
Newest
#1Kishor Kumar Gajrani (Indian Institute of Information Technology Design & Manufacturing Kancheepuram)H-Index: 10
Abstract null null Metal cutting causes severe friction and heat generation in the machining zone. Previously, petroleum-based cutting fluids were applied for reducing friction and machining temperature at the machining zone. Nowadays, nano-cutting fluids are preferred owing to their higher thermal conductivity and better lubricating ability. However, during machining of hard materials (hardness, ≥50 HRC), the effectiveness of these nano-cutting fluids is limited, as they rarely reach to the cut...
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#5Michael P SealyH-Index: 14
#7John W. SutherlandH-Index: 56
Last. Ajay P. MalsheH-Index: 34
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#1Murali M. Sundaram (UC: University of Cincinnati)H-Index: 17
#2Kamlakar P Rajurkar (NU: University of Nebraska–Lincoln)H-Index: 48
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#1Sachin Singh (IITG: Indian Institute of Technology Guwahati)H-Index: 7
#2Deepu Kumar (IITG: Indian Institute of Technology Guwahati)H-Index: 3
Last. Kamlakar P Rajurkar (NU: University of Nebraska–Lincoln)H-Index: 48
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#1Mamilla Ravi Sankar (IITG: Indian Institute of Technology Guwahati)H-Index: 12
#2Vijay K. Jain (IITK: Indian Institute of Technology Kanpur)H-Index: 54
Last. Kamlakar P RajurkarH-Index: 48
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Abstract Abrasive flow finishing (AFF) process is one of the advanced finishing processes that uses polymer rheological abrasive medium to finish simple to complex surface features. AFF process comprises of machine set-up, tooling and medium. Among these three AFF process components, medium plays an important role. Depending on medium constituents and its quantity, the rheological property as well as its finishing abilities varies. In the current research work, soft styrene polymer and silicone ...
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#1Yakup YildizH-Index: 5
#2Murali M. Sundaram (UC: University of Cincinnati)H-Index: 17
Last. Ahmet Altintas (Dumlupinar University)H-Index: 2
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Electrical discharge machining (EDM) is an extensively used method in the machining of electrically conductive materials. Recast or white layer formation is undesirable, but inevitable, result of EDM and needs to be understood and accurately determined to efficiently perform post-treatment processes for removing the recast layer caused by EDM process. In this study, recast layer thickness and surface roughness data obtained from experimental study were analyzed and a correlation between these tw...
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#1Muhammad P. Jahan (Western Kentucky University)H-Index: 20
#2Kamlakar P Rajurkar (NU: University of Nebraska–Lincoln)H-Index: 48
Last. Ajay P. Malshe (UA: University of Arkansas)H-Index: 34
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Abstract Presently, the nano scale electro-machining (nano-EM) process has been demonstrated in both the liquid and air dielectric mediums, which are known as wet and dry nano-EM respectively. In the current study, two important aspects of the nano-EM have been investigated: the minimum possible feature dimension and mass fabrication capability of nano-EM. Firstly, the investigation has been done on the capability of machining graphene at atomic scale with focus on obtaining smallest possible na...
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#1Lin Gu (SJTU: Shanghai Jiao Tong University)H-Index: 11
#2Fawang Zhang (SJTU: Shanghai Jiao Tong University)H-Index: 5
Last. Ajay P. Malshe (UA: University of Arkansas)H-Index: 34
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Abstract Blasting erosion arc machining (BEAM) greatly improves the material removal rate (MRR) by utilizing the electrical arcs instead of sparks as in EDM. However, the mechanism in BEAM is still not fully understood. By observing and diagnosing the electrical arc generated in a single pulse, the arc temperature is determined and hydrodynamic arc breaking mechanism that can effectively prevent the arcing damage is observed. Furthermore, this paper compares the craters obtained in negative pola...
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This work investigates the effects of tool wear on surface roughness (Ra), chip formation mechanisms and chip morphology in the microendmilling of aluminum alloy (AA 1100) using acoustic emission (AE) signals. The acquired AE signals are analysed in the time domain, frequency domain using fast Fourier transformation (FFT) and the discrete wavelet transformation (DWT) technique. The time domain analysis indicates that the root mean square of the AE (AERMS) signals is sensitive to the formation of...
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#1Wansheng Zhao (SJTU: Shanghai Jiao Tong University)H-Index: 19
#2Hui Xu (SJTU: Shanghai Jiao Tong University)H-Index: 7
Last. Kamlakar P RajurkarH-Index: 48
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Abstract Blasting Erosion Arc Machining (BEAM) is proposed to achieve high-efficiency machining for difficult-to-cut materials such as high-temperature alloys. By creatively controlling the arc plasma with the mechanism named hydrodynamic arc breaking, BEAM can remove bulk material with a high material removal rate (MRR). However, the BEAM generated surface is rough and requires additional post processing. In order to improve the resulting surface quality, positive electrode polarity BEAM was pe...
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