11 publications
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Published Subscription Review Article
Review on Severe Plastic Deformation Techniques for Bulk Materials: Deformation Behavior and PropertiesBy Nagendra Singh, Gopal Sharma
Abstract: This paper presents a detailed review of the efficient application of Severe Plastic Deformation for the fabrication of ultra-fine-grained and nanostructured crystalline bulk materials. Severe Plastic Deformation allows substantial grain refinement while largely preserving the original dimensions of the workpiece, making it especially suitable for ductile materials capable of sustaining very high strains under elevated hydrostatic pressure prior to failure. The study investigates the grain refinement mechanisms involved in Severe …
Published in Trends in Machine design · Vol. 13, Issue 1, 2026 · pp. 40–72 Read article →
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Published Subscription Original Research
Re-imaging Education Policy of a Framework Based on Indian Knowledge SystemsBy Nagendra Singh, Saurabh Pachauri, Manish Dixit
Abstract: Digital transformation revolutionized education; it enhances teaching and learning, improves administrative tasks, and empowers students and educators. Digital transformation in education and its importance in shaping the future. Integration of technology in classrooms enables interactive and immersive learning. Digital tools offer dynamic learning experiences, enhancing student engagement. This leads to improved comprehension and knowledge retention. Personalized learning experiences are facilitated by digital transformation. Digital transformation creates vast resources and online …
Published in International Journal of Education Sciences · Vol. 3, Issue 1, 2026 · pp. 42–63 Read article →
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Published Subscription Review Article
A study on Parametric and Non-Parametric Statistical ToolsBy Nagendra Singh, Sanjeev Kumar Verma
Abstract: This research report provides a brief overview of the most recent research techniques. The field of the research process has seen a resurgence of attention due to recent advancements in academia. Professors, Ph.D. candidates, researchers, investigative officers, and university students comprise the demographic of this research article. The article will become an essential part of your research papers, projects, and reports for citations due to future obligations. This study is …
Published in Journal of Production Research & Management · Vol. 16, Issue 1, 2026 · pp. 10–31 Read article →
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Published Subscription Original Research
Effect of Thermal Conditions on Microstructure and Mechanical Properties of AA5083 Processed by Equal Channel Angular PressingBy Nagendra Singh, Sanjeev Kumar Verma
Abstract: A commercial AA5083 with an initial grain size of 210 μm was given an ultrafine-grained structure using the equal channel angular pressing (ECAP) technique under die design as patented. The identical sample underwent two successful passes through the die at 473 K, with each passage causing the sample to rotate 90° along its own longitudinal axis. After just one pressing, the microstructure was comparatively homogeneous. It was made up of …
Published in Journal of Experimental & Applied Mechanics · Vol. 17, Issue 1, 2026 · pp. 49–64 Read article →
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Published Subscription Original Research
An Overview Mechatronics Systems Design of Modelica-Based Model Predictive Control Strategies for CO₂ Heat Pump SystemsBy Nagendra Singh, Sanjeev Kumar Verma
Abstract: The growing adoption of renewable energy technologies poses challenges to energy supply stability, necessitating increased flexibility in energy demand. This paper introduces a Modelica-based Model Predictive Control (MPC) strategy aimed at keeping the supply water temperature within the range of 55°C to 75°C while minimizing energy consumption and electricity expenses throughout a year. A comprehensive, high-fidelity model representing a school building in Oslo, Norway, was developed using Modelica and exported …
Published in Journal of Mechatronics and Automation · Vol. 13, Issue 1, 2026 · pp. 15–27 Read article →
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Published Subscription Review Article
Continuous Commissioning Techniques for Ground Source Heat Pumps: ReviewBy Nagendra Singh, Sanjeev Kumar Verma
Abstract: This study offers a model-based continuous commissioning methodology to find control-related performance gaps in HVAC systems with ground-source heat pumps. Traditional continuous commissioning is still helpful in finding energy performance gaps, even if MBCCx employs a system model as a reference to find operational inefficiencies and control issues arising from subsystem integration. A calibrated physics-based model that depicts the system performance as intended during the design phase forms the basis …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 12, Issue 3, 2025 · pp. 22–36 Read article →
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Published Subscription Original Research
Numerical Investigation of AA5053 Through Equal Channel Angular Pressing Technique: An OverviewBy Nagendra Singh, Sanjeev Kumar Verma, Ashish Kumar Tiwari
Abstract: Equal channel angular pressing is recognized as the predominant method for bulk severe plastic deformation processing and has been employed for refining the grain structure in numerous metals and alloys. This study utilized finite element analysis to examine the processing of metallic billets through simple shear deformation. For the study, the die channel angle was chosen based on achieving the minimum energy consumption to induce maximum uniform strain. Among the …
Published in Trends in Machine design · Vol. 12, Issue 3, 2025 · pp. 40–47 Read article →
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Published Subscription Review Article Special issue
A Review on Characterization of Mechanical Behavior of AA5083 Through Equal Channel Angular Pressing at Different Channel AnglesBy Nagendra Singh, Manoj Kumar Agrawal, Sanjeev Kumar Verma, Ashish Kumar Tiwari
Abstract: Materials that have been enhanced through traditional techniques like strain hardening, the addition of solutes, altering grain size through precipitation and refining are commonly utilized in industrial applications. However, there is a restriction on the extent of deformation that these traditional techniques can impose on a material. This research centered on examining the primary mechanical characteristics of aluminum alloys when polycrystalline materials incorporate an extremely fine grain size. By producing …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 54–68 Read article →
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Published Open access Original Research Special issue
Evaluation of microstructure properties and characterization of fracture locus of AA5083 through equal channel angular pressing techniquesBy Nagendra Singh, Manoj Kumar Agrawal
Abstract: In this investigation, a commercially available aluminium alloy called AA5083 was subjected to two passes of equal channel angular pressing utilising a route B_C at room temperature for this experiment. To evaluate the effect of AA5083, the microstructure, mechanical attributes, and wear parameters of the alloy were examined both prior to and subsequent to undergoing this technique. Using an optical microscope, microstructural investigations were performed on the pressed alloy's flow …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 270–286 Read article →
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Published Open access Original Research Special issue
Deformation Behaviour of the Billet and Tooling Design on AA5083 through Equal Channel Angular Pressing With Effect of Back PressureBy Nagendra Singh, Manoj Kumar Agrawal
Abstract: Equal channel angular pressing is an emerging method applied to subject materials to significant plastic strains while maintaining the original shape of the billet. Researchers have discovered that the level of strain attained through equal channel angular pressing is influenced by factors such as the angle of die, friction conditions, and the implementation of back pressure. These variables significantly impact the microstructure and the irregularity of strain within the billet …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 287–303 Read article →
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Published Open access Original Research Special issue
Dynamic deformation and microstructural characteristics of AA5083 under the influence of electrochemical behaviour using equal channel angular pressingBy Nagendra Singh, Manoj Kumar Agrawal
Abstract: Large-scale Equal channel angular pressing is a great engineering material that has more potential for AA5083 industrial applications. Uniaxial dynamic compressive tests across a temperature of 448 K were conducted for the ECAP technique AA5083 in order to create such a design framework. The microstructure was described using transmission electron microscopy and scanning electron microscope both before and after dynamic loading. The plastic flow behaviour of the AA5083 was described …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 95–112 Read article →