Ramanuj Kumar
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View article: Optimizing Sustainable Machining Conditions for Incoloy 800HT Using Twin-Nozzle MQL with Bio-Based Groundnut Oil Lubrication
Optimizing Sustainable Machining Conditions for Incoloy 800HT Using Twin-Nozzle MQL with Bio-Based Groundnut Oil Lubrication Open
This study explores the machinability of Incoloy 800HT (high temperature) under a sustainable lubrication approach, employing a twin-nozzle minimum quantity lubrication (MQL) system with groundnut oil as a green cutting fluid. The evaluati…
View article: Implementing a novel TOPSIS-sine cosine algorithm-based hybrid optimization in machining medium-hardened steel
Implementing a novel TOPSIS-sine cosine algorithm-based hybrid optimization in machining medium-hardened steel Open
Machining medium-hardened steel is particularly challenging because of its high strength and wear resistance, which generate excessive cutting temperatures. The elevated temperature contributes to rapid tool wear and negatively impacts sur…
View article: Synthesis of an Ionic Liquid-Based Cutting Lubricant and Its Performance Comparison with Mineral Oil in Hard Turning
Synthesis of an Ionic Liquid-Based Cutting Lubricant and Its Performance Comparison with Mineral Oil in Hard Turning Open
This study compares the hard turning performance under dual-nozzle minimum quantity lubrication (MQL) using mineral oil and 1-butyl-3-methylimidazolium chloride-based ionic fluids. Key performance indicators, including tool life (based on …
View article: Material-specific machining optimization of Ti6Al4V alloy under MQL: A sustainability-centric approach
Material-specific machining optimization of Ti6Al4V alloy under MQL: A sustainability-centric approach Open
The manufacturing industry is undergoing rapid transformation driven by modern technologies, with a focus on producing high-quality products efficiently. In line with increasing sustainability concerns, researchers are actively exploring v…
View article: Chip morphology assessment in turning of hardened AISI 52100 steel under ZnO nanofluid environment
Chip morphology assessment in turning of hardened AISI 52100 steel under ZnO nanofluid environment Open
The chip morphology in hard turning significantly impacts tool performance influenced by factors like strain softening, machining parameters, workpiece hardness, and tool geometry. In this current study, AISI 52100 steel of hardness (∼ 55 …
View article: Performance improvement through textured cutting tool during machining hard-to-cut materials: A review
Performance improvement through textured cutting tool during machining hard-to-cut materials: A review Open
The objectives of manufacturing industries focused constantly on enhancement of productivity with less cost so as to be sustainable in machining. With recent advancements of new processes/techniques practiced in shop floors, machining beco…
View article: Effect of cutting factors on surface quality of AA7075 alloy: A case study while turning with ZrCN coated WC inserts
Effect of cutting factors on surface quality of AA7075 alloy: A case study while turning with ZrCN coated WC inserts Open
This paper dispenses influence of cutting factors on surface quality of AA7075 while turning with tungsten carbide (WC) tools coated with TiN-TiCN-Al2O3−ZrCN in dry cutting environment, followed by their significance prediction on the desi…
View article: Progressive advancement of super alloys during sustainable machining: A review
Progressive advancement of super alloys during sustainable machining: A review Open
With the significant growth of cutting tool technology, the machining of hard to cut material is the main discussed area among academic researchers and metal-cutting industries. Higher-speed machining conditions have been adopted by many r…
View article: Research progress on laser beam machining on inconel 718 alloys: A review
Research progress on laser beam machining on inconel 718 alloys: A review Open
Inconel is an alloy that can withstand high temperatures. It can retain the majority of its mechanical strength at high temperatures, and due to other integral properties, sees widespread utilization in the industries concerning aviation. …
View article: A Comparative Performance Investigation of Single- and Double-Nozzle Pulse Mode Minimum Quantity Lubrication Systems in Turning Super-Duplex Steel Using a Weighted Pugh Matrix Sustainable Approach
A Comparative Performance Investigation of Single- and Double-Nozzle Pulse Mode Minimum Quantity Lubrication Systems in Turning Super-Duplex Steel Using a Weighted Pugh Matrix Sustainable Approach Open
This study investigates the performance comparison of machining of UNS S32750 super-duplex stainless steel under single- and double-nozzle pulse mode minimum quantity lubrication (MQL) conditions. The pulse mode MQL system delivers lubrica…
View article: WASPAS Based Multi Response Optimization in Hard Turning of AISI 52100 Steel under ZnO Nanofluid Assisted Dual Nozzle Pulse-MQL Environment
WASPAS Based Multi Response Optimization in Hard Turning of AISI 52100 Steel under ZnO Nanofluid Assisted Dual Nozzle Pulse-MQL Environment Open
Hard turning is an emerging machining technology that evolved as a substitute for grinding in the production of precision parts from hardened steel. It offers advantages such as reduced cycle times, lower costs, and environmental benefits …
View article: Machinability Comparison of TiCN-Al2O3-TiN, TiAlN-TiN, and TiAlSiN Coated Carbide Inserts in Turning Hardened AISI 4340 Steel Using Grey-Crow Search Hybrid Optimization
Machinability Comparison of TiCN-Al2O3-TiN, TiAlN-TiN, and TiAlSiN Coated Carbide Inserts in Turning Hardened AISI 4340 Steel Using Grey-Crow Search Hybrid Optimization Open
This experimental study presents the machinability comparison of TiCN-Al2O3-TiN, TiAlN-TiN, and TiAlSiN coated carbide inserts in hard turning AISI 4340 steel. The primary purpose of this research is to determine the most appropriate cutti…
View article: Current Status of Hard Turning in Manufacturing: Aspects of Cooling Strategy and Sustainability
Current Status of Hard Turning in Manufacturing: Aspects of Cooling Strategy and Sustainability Open
In recent years, hard turning has been found to be a well-known substitute for traditional grinding for acquiring the finish quality of hardened steel without sacrificing productivity. There are many issues that should be carefully underst…
View article: Hard Turning Performance Investigation of AISI D2 Steel under a Dual Nozzle MQL Environment
Hard Turning Performance Investigation of AISI D2 Steel under a Dual Nozzle MQL Environment Open
In recent years, hard turning has emerged as a burgeoning cutting technology for producing high-quality finishing of cylindrical-shaped hardened steel for a variety of industrial applications. Hard turning under dry cutting was not accepte…
View article: A contemporary advancement of intelligent machining and sustainability aspects in hard machining area: A Critical Review
A contemporary advancement of intelligent machining and sustainability aspects in hard machining area: A Critical Review Open
The intelligent manufacturing devotes considerable effort to towards machining process. This phenomenon is engendered by the growing demand for advanced machining process for manufacturing of precise parts by adopting optimization techniqu…
View article: Environmental sustainability during machining of hardened steel using nanofluid: A case study
Environmental sustainability during machining of hardened steel using nanofluid: A case study Open
The positive effects of nanofluid-assisted minimum quantity lubrication include improved performance during machining and environmental sustainability. In the present study two cutting parameters levels such as feed rate of 0.05 (mm/rev)- …
View article: Grey-Fuzzy Hybrid Optimization for Thermohydrodynamic Performance Prediction of Misaligned Rough Elliptic Bore Journal Bearing
Grey-Fuzzy Hybrid Optimization for Thermohydrodynamic Performance Prediction of Misaligned Rough Elliptic Bore Journal Bearing Open
Rough elliptic bore misaligned journal bearing performance involves many geometric and operational parameters, which directly or indirectly affect the thermohydrodynamic performance output. Improper design and manufacturing of journal bear…
View article: Machining of high temperature heat resistant super alloys- a concise review on cooling aspects
Machining of high temperature heat resistant super alloys- a concise review on cooling aspects Open
Analyzing and comprehending cutting process mechanisms is a crucial step in creating a cost-effective, long-lasting, and safe machining process.In modern manufacturing, it is very challenging to achieve a high surface finish product with h…
View article: Computer Simulation and Optimization of Elliptic Bore Journal Bearing
Computer Simulation and Optimization of Elliptic Bore Journal Bearing Open
In this study, the computer simulation is carried out using FORTRAN to develop a theoretical model for estimating the lubrication performance of an elliptic bore journal bearing. The Analysis initially includes the hydrodynamic lubrication…
View article: Design and Analysis of a Novel Concept-Based Unmanned Aerial Vehicle with Ground Traversing Capability
Design and Analysis of a Novel Concept-Based Unmanned Aerial Vehicle with Ground Traversing Capability Open
Unmanned aerial vehicle (UAV) is a typical aircraft that is operated remotely by a human operator or autonomously by an on-board microcontroller. The UAV typically carries offensive ordnance, target designators, sensors or electronic trans…
View article: Search for the decay $B_s^0\rightarrow\eta\eta$
Search for the decay $B_s^0\rightarrow\eta\eta$ Open
We report results from a search for the decay $B_s^0 → η η$ using 121.4 fb$^{-1}$ of data collected at the $ϒ$(5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We do not observe any signal and set an upper…
View article: Hard Turning ASSESSMENT on EN31 Steel in Dry and Wet Cooling Environments USING Grey-Fuzzy Hybrid Optimization APPROACH
Hard Turning ASSESSMENT on EN31 Steel in Dry and Wet Cooling Environments USING Grey-Fuzzy Hybrid Optimization APPROACH Open
In recent years, machining of hard-to-cut metals by hard turning process is an embryonic technology for machining industry and research development. Hard turning is generally defined as the material removal process of hardened steel having…
View article: Grey-Fuzzy Hybrid Optimization and Cascade Neural Network Modelling in Hard Turning of AISI D2 Steel
Grey-Fuzzy Hybrid Optimization and Cascade Neural Network Modelling in Hard Turning of AISI D2 Steel Open
Nowadays hard turning is noticed to be the most dominating machining activity especially for difficult to cut metallic alloys. Attributes of dry hard turning are highly influenced by the amount of heat generation during cutting. Some major…
View article: A Comprehensive Review on AISI 4340 Hardened Steel: Emphasis on Industry Implemented Machining Settings, Implications, and Statistical Analysis
A Comprehensive Review on AISI 4340 Hardened Steel: Emphasis on Industry Implemented Machining Settings, Implications, and Statistical Analysis Open
Turning of hardened AISI 4340 steel is regarded as one of the demanding challenges in machining sectors where precision tolerances are essential for automobile parts. The AISI 4340 steel is broadly utilized in forged steel automotive crank…
View article: Machinability Investigation on Novel Incoloy 330 Super Alloy using Coconut Oil Based SiO2 Nano fluid
Machinability Investigation on Novel Incoloy 330 Super Alloy using Coconut Oil Based SiO2 Nano fluid Open
Over the years, the quality of the finished surface has become the foremost prevalent owing to better output performance, reliability and life span of a machined part. Moreover, the effects of cooling and lubrication approach during the m…
View article: Performance Analysis of Trihexyltetradecylphosphonium Chloride Ionic Fluid under MQL Condition in Hard turning
Performance Analysis of Trihexyltetradecylphosphonium Chloride Ionic Fluid under MQL Condition in Hard turning Open
The current research presents an overall performance-based analysis of Trihexyltetradecylphosphonium Chloride [[CH3(CH2)5]P(Cl)(CH2)13CH3] ionic fluid mixed with organic coconut oil (OCO) during turning of hardened D2 steel. The applicatio…
View article: Search for transitions from $\Upsilon(4S)$ and $\Upsilon(5S)$ to $\eta_b(1S)$ and $\eta_b(2S)$ with emission of an $\omega$ meson
Search for transitions from $\Upsilon(4S)$ and $\Upsilon(5S)$ to $\eta_b(1S)$ and $\eta_b(2S)$ with emission of an $\omega$ meson Open
Using data collected in the Belle experiment at the KEKB asymmetric-energy e$^+$e$^−$ collider we search for transitions $Υ$(4S)→$η_b$(1S)$ω$, $Υ$(5S)→$η_b$(1S)$ω$ and $Υ$(5S)→$η_b$(2S)$ω$. No significant signals are observed and we set 90…