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Topic Review
TIG-MIG Hybrid Welding
Tungsten inert gas-metal inert gas hybrid welding (TIG-MIG) combines the advantages of tungsten and metal inert gas welding. It can efficiently produce high-quality weld joints that meet modern manufacturing quality and efficiency requirements. Based on heat transfer, fluid dynamics, and electromagnetic theory, a three-dimensional coupled transient model of arc-droplet interactions in TIG-MIG hybrid welding was established. In this study, the temperature field, flow field, electromagnetic force, pressure, and current density parameters were analyzed in the arc space. The results show that introducing TIG welding has a significant impact on MIG welding.
  • 1.7K
  • 13 Jan 2021
Topic Review
Beam Steering Characteristics of Reconfigurable Transmitarray Antennas
The high gain beam steering antennas are widely used in 5G wireless mobile communications, radio frequency (RF) wireless power transmission, and satellite communications. In order to obtain high gain and beam steering characteristics, traditionally, antennas of the same type as phased array antennas, reflectarray antennas, and parabolic antennas have been designed. The transmitarray (TA) has attracted more and more interest from researchers due to its low profile, affordable cost, lower losses, low design complexity, and ease of fabrication. These have become popular solutions due to their remarkable applications, for instance, in biomedical systems (Brain and Breast Cancer Detection), civil and military radar systems, imaging systems, satellite communications, direct broadcasting services, and 6G/5G communication systems, etc.
  • 1.7K
  • 03 Mar 2022
Topic Review
Fountain (Duchamp)
Fountain is a readymade sculpture produced by Marcel Duchamp in 1917: a porcelain urinal signed "R.Mutt". In April 1917, an ordinary piece of plumbing chosen by Duchamp was rotated 90 degrees on its axis and submitted for an exhibition of the Society of Independent Artists, the first annual exhibition by the Society to be staged at The Grand Central Palace in New York. Fountain was not rejected by the committee but it was removed from the show area, since Society rules stated that all works would be accepted from artists who paid the fee. Following that removal, Fountain was photographed at Alfred Stieglitz's studio, and the photo published in The Blind Man. The original has been lost. The work is regarded by art historians and theorists of the avant-garde as a major landmark in 20th-century art. Sixteen replicas were commissioned by Duchamp in the 1950s and 1960s and made to his approval. Some scholars have suggested that the original work was by a female artist rather than Duchamp, but this is a minority view among historians.
  • 1.7K
  • 28 Nov 2022
Topic Review
Fundamental Building Solutions for Expansive Soils
Expansive soils exist in many countries worldwide, and their characteristics make them exceedingly difficult to engineer. Due to its significant swelling and shrinkage characteristics, expansive soil defies many of the stabilization solutions available to engineers. Differential heave or settlement occurs when expansive soil swells or shrinks, causing severe damage to foundations, buildings, roadways, and retaining structures. In such soils, it is necessary to construct a foundation that avoids the adverse effects of settlement.
  • 1.7K
  • 06 May 2023
Topic Review
Energy Recovery in Air Conditioning Systems
Energy has become the backbone of humanities daily activities. Heating, ventilating, and air conditioning systems (HVAC), which consume around 39% of energy in the residential sector, have turned into an essential constituent for providing fresh air, especially after COVD-19, not only in hospitals but also in any simple construction. Thus, decreasing this percentage or recovering part of the energy lost is an essential issue in today’s energy management scenarios.
  • 1.7K
  • 11 Jan 2022
Topic Review
Nanofillers for Property Enhancement in Bioplastics
Bioplastics reinforced with filler enhance the mechanical properties of starch but reduce its hydrophilicity. In recent years, utilization of nano-sized fillers has bloomed in the fabrication of bioplastic due to their merits, such as low density, excellent mechanical properties, low abrasive nature and reactive surface for ease of modification. Numerous studies had reported that nano-sized fillers have a larger surface area than the conventional micro-sized fillers, thus enhancing the properties due to better interfacial interactions with the polymer matrix. Besides enhancing the mechanical and barrier properties, fillers are also capable of imparting specific functional properties to the bioplastics, e.g., electric conductivity or an antimicrobial character. Another added advantage of filler with nanoscale is in retaining the inherent transparency of the film, especially for the neat matrix. 
  • 1.7K
  • 02 Mar 2022
Topic Review
Sustainable Urban Mobility
Sustainable urban mobility is a term that refers to the use of means of transport that do not affect the environment and an approach to the planning of the development of urban areas with sustainability goals in mind. When creating sustainable urban mobility plans, planners must also have the number of inhabitants in urban areas in mind as well as the need to ensure a satisfactory transportation service for residents located in urban areas. In order to respond to the ever-increasing need to develop sustainable modes of transport, the importance of electric, autonomous, and electric autonomous vehicles is increasingly emphasized. In addition, as trends of growth and development in electric autonomous vehicle technology are increasing, one of the questions that has appeared is whether autonomous electric vehicles represent one of the mechanisms that will be used to increase the sustainability of urban mobility. 
  • 1.7K
  • 27 Sep 2022
Topic Review
Marine Battery Energy Storage Systems on Ships
The shipping industry is going through a period of technology transition that aims to increase the use of carbon-neutral fuels. There is a significant trend of vessels being ordered with alternative fuel propulsion. Shipping’s future fuel market will be more diverse, reliant on multiple energy sources. One of very promising means to meet the decarbonisation requirements is to operate ships with sustainable electrical energy by integrating local renewables, shore connection systems and battery energy storage systems (BESS). 
  • 1.7K
  • 20 Mar 2023
Topic Review
Sensors and Actuation Technologies in Exoskeletons
Exoskeletons and exoskeletal robots are wearable devices based on a mechanical structure that conceptually mirrors the skeletal structure of a limb or of the involved body-part. Exoskeletons are robots that closely interact with humans and that are increasingly used for different purposes, such as rehabilitation, assistance in the activities of daily living (ADLs), performance augmentation or as haptic devices.
  • 1.7K
  • 25 Feb 2022
Topic Review
Regulation of Unmanned Aerial Vehicles
The use of unmanned aerial vehicles (UAVs) is generally regulated by the national aviation authority of the country.
  • 1.7K
  • 31 Oct 2022
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