Controllable Electrorheological and Nano/Magnetorheological Materials and their Applications
A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Electronic Materials".
Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 13605
Special Issue Editors
Interests: tribology of machine elements; journal bearings; thrust bearing; artificial texturing; piston ring tribology; magnetorheological; electrorheological fluids; active magnetic bearings
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Future machines design must aim for efficiency, ergonomy, safety, and have a minimal impact on climate and nature. Machines must also become more efficient by having a reduced weight in order to achieve a minimum consumption of energy and therefore of available natural resources. Future machines must be smarter and safer, offering more autonomy and less risk of injury.
Tribological design analysis and optimization, including friction wear and lubrication, will affect the performance of the machine elements, especially its operation and efficiency. The emitted gases and the machine life span will also be enhanced, having a positive impact on the world economy.
Checking materials’ properties has attracted a lot of attention in recent decades. Magneto/nanomagneto rheological and electrorheological fluids, among others, are smart lubricants whose rheological properties can be changed by applying a magnetic or an electric field respectively. Smart lubricants are commonly a suspension of solid magnetized or dielectric particles diffused in non-conducting liquid. By applying a magnetic or electric field, their resistance to flow can be altered very quickly. The smart fluids can change their rheological behavior from Newtonian type to Bingham type, in which case the apparent viscosity of the fluid becomes non-linear. Due to this behavior, smart fluids can endure external pressure or force variability with the advantages of having a simple design, offering continuous control and a fast response.
Specific targeting in the development of new technologies and new materials, makes it possible to reduce the weight and optimize the strength of future machines, to enhance the tribological and interface properties, efficiency and robustness. It is also a promising field in terms of monitoring a product remotely, to interpret signals and take action using artificial intelligence.
The combination of tribological design analysis and optimization of machine elements with smart fluids, can offer controllable tribological properties and/or controllable dynamic behavior.
This Special Issue includes works that deal with the development of smart machines, materials and processes, by introducing new methods, models and multidisciplinary approaches, through research and an in depth understanding of physical phenomena.
Assis. Prof. Pantelis G. Nikolakopoulos
Dr. Dimitrios Bompos
Guest Editors
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Keywords
- tribology of machine elements
- smart lubricants
- journal bearings
- thrust bearings
- magnetorheological
- electrorheological fluids
- smart machines
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