A5100759118- Advanced Machining and Optimization Techniques
- Advanced machining processes and optimization
- Advanced Surface Polishing Techniques
- Laser Material Processing Techniques
- Metallurgy and Material Forming
- Metal Forming Simulation Techniques
- Electrodeposition and Electroless Coatings
- Advanced materials and composites
- Cellular and Composite Structures
- Additive Manufacturing and 3D Printing Technologies
- Electrochemical Analysis and Applications
- Advanced Materials Characterization Techniques
- Advanced Materials and Mechanics
- Aluminum Alloys Composites Properties
- Various Chemistry Research Topics
- Metal and Thin Film Mechanics
- Injection Molding Process and Properties
- Anodic Oxide Films and Nanostructures
- Laser and Thermal Forming Techniques
- Integrated Circuits and Semiconductor Failure Analysis
- Smart Grid Security and Resilience
- Electrowetting and Microfluidic Technologies
- High Entropy Alloys Studies
- Optimal Power Flow Distribution
- Dental materials and restorations
Flanders Make (Belgium)
2018-2025
KU Leuven
2018-2025
University of Auckland
2016-2018
Indian Institute of Technology Gandhinagar
2014-2016
Callaghan Innovation
2016
University of Stuttgart
2016
Indian Institute of Technology Roorkee
2014
Indian Institute of Technology Delhi
1999
University of Allahabad
1964-1969
Abstract This study investigates the evolution of surface integrity a strategically important Niobium based-cermet with nickel binder (NbC-Ni), while processing it electrochemical machining (ECM) and hybrid laser-ECM (LECM) processes for shaping towards moulds cutting tools applications. The results indicate that, ECM process can preserve material properties due to its athermal non-contact nature, suffers from selective phase dissolution, particle breakout passivation issues when cermet....
Abstract Jet-electrochemical deposition (Jet-ECD) offers a unique advantage over thermal-driven additive manufacturing techniques for fabricating metallic microstructures in an athermal manner. However, traditional Jet-ECD always suffers from stray deposition, which limits its application microelectromechanical systems, microelectronics, and biomedical sectors, where precise are required. We present novel method of electrolyte-confined to enhance microstructure quality. A micro-ceramic...
The performance of electrochemical micromachining (ECM) is compromised when processing highly passivating materials like Ti6Al4V, which can be improved through hybrid laser-ECM (LECM) facilitates passivation weakening. To date, phenomenon has been mostly analysed metallography and potentiometric techniques. Metallography provides oxide formation details over a limited observation area after machining, have relevance for manufacturing. Whereas, techniques cannot replicate ECM conditions to...
The characterization of hot deformation Zr-2.5Nb in the strain rate range 0.01 – 10s-1 and temperature 700- 925oC has been studied using compression testing on Gleeble-3800. For this study, processing maps approach adopted their interpretation done Dynamic Material Model (DMM). power dissipation with (α+β) phase field exhibits a domain dynamic recrystallization, peak efficiency 54-60% at about 750oC is 0.01s-1. A second that occurs β-phase field, having 49-54% 0.01s-1 rate, which may be...
SiC is an important industrial ceramic and also the fourth hardest after diamond, boron nitride carbide. Due to very low fracture toughness, it difficult machine using conventional machining methods. EDM can such materials irrespective of their hardness. Micro electrical discharge (micro-EDM) adaptation process that has similar electro-thermal methods material removal for manufacturing miniature or micro parts. used obtaining burr-free dimensional apertures in difficult-to-cut materials. For...
Hybrid laser-electrochemical micromachining is a fast and force-free processing technique to machine difficult-to-cut multi-materials with conductivity variations has the advantage of accelerated material dissolution, oxide layer weakening surface quality. In this process, laser can assist electrochemical dissolution or participate in removal depending on fluence available workpiece surface. The tool-based configuration allows delivery ECM at higher machining depths achieves homogeneous...
Auxetic materials are a novel class of mechanical metamaterials which exhibit an interesting property negative Poisson ratio by virtue their architecture rather than composition. It has been well established that wide range can be obtained varying the geometry and cellular materials. However, limited stiffness values from given restricts applications. Research trials have revealed multi-material designs capability to generate as per requirement application. With advancements in 3D printing,...
Abstract A tool-based hybrid laser-electrochemical micromachining process involves concurrent application of two energies i.e. electrochemical and laser in the same machining zone by means a tool which serves as an ECM well multimode waveguide. It is relatively novel finding applications defect-free difficult-to-cut materials without affecting their microstructure. In order to understand physical phenomena occurring during this process, in-situ observations are required. Therefore, work,...
The press formability of the automotive materials such as aluminum alloys, magnesium alloys and steels is influenced by forming temperatures. While adjusting temperature level die, punch binder, lightweight can successfully be formed, especially for complex body parts. objective this case study to determine limit curves Al6014 DP600 alloy sheet at elevated temperatures in specific range 200 °C 250 suitable operation long-run production cycles. focus set on these two are widely used panels...
Surface structures with micro-grooves have been reported to be an effective way for improving the performance of metallic components. Through-mask electrochemical micromachining (TMEMM) is a promising process fabricating micro-grooves. Due isotropic nature metal dissolution, dissolution workpiece occurs both along width and depth. Overcut generated inevitably increasing depth, which makes it difficult enhance machining localization. In this paper, method using conductive masked porous...
The precision in electrochemical machining (ECM) is adversely affected by the generation of gas bubbles due to inherent reactions occurring at cathode (tool) and anode (workpiece) surface. These are known cause variations electrolyte conductivity lead uneven dissolution limit achievable flatness surface finish. demands for ECM make it important investigate bubble evolution phenomenon. In prior state art, this has been done means transparent electrodes high-speed video observations. current...