39 Result(s)
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Article
Myung** Kim
Engineering
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Article
Open AccessImpact of Additive Manufacturing Surface Roughness on the Aerodynamic Performance of Axial Compressor Blades
This paper investigates the influence of additive manufacturing (AM) surface roughness on the aerodynamic performance of axial compressor blades. Though the AM offers advantages such as complex geometry fabric...
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Static Structural Testing of Composite Wing Structure for Vertical Takeoff and Landing (VTOL) Unmanned Aerial Vehicles
The vertical takeoff and landing unmanned aerial vehicle (VTOL UAV) must ensure robust structural integrity and meet a 130 kg maximum takeoff weight (MTOW) requirement, as it functions as an aerial module with...
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An analysis on Pigford model for a liquid film develo** over a rotating disk
The present study aims to analyze and improve the empirical parameters of the 1-D Pigford model to predict the liquid film flows develo** over a rotating disk. The empirical parameters reflect the physical e...
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Emerging memory electronics for non-volatile radiofrequency switching technologies
Radiofrequency (RF) switches are pervasive in modern communication and connectivity systems such as cellular networks, satellite communications and radar systems. Contemporary systems typically use transistor ...
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Analytical study about effects of kerosene lubrication on slip, heat, and temperature of a cylindrical roller bearing
An aero-engine’s cost, weight, and complexity can be greatly reduced if fuel is used for lubrication instead of oil. However, there are not many published works about the effect of fuel lubrication on the roll...
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A Study on the VR Goggle-based Vision System for Robotic Surgery
Robot-assisted surgery (RAS) using the da Vinci surgical system (dVSS) has been widely performed owing to its high-definition stereoscopic visualization and improved maneuverability, which has been developed f...
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Experimental investigation of low-frequency instabilities of dual-swirl pressure-atomization spray flames
The present study is concerned with the low-frequency self-excited instabilities frequently occurring in aero-engine combustors operated with Jet A-1 fuel under pilot-mode non-premixed conditions. Here we perf...
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Author Correction: An aquatic-vision-inspired camera based on a monocentric lens and a silicon nanorod photodiode array
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An amphibious artificial vision system with a panoramic visual field
Biological visual systems have inspired the development of various artificial visual systems including those based on human eyes (terrestrial environment), insect eyes (terrestrial environment) and fish eyes (...
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Monolayer molybdenum disulfide switches for 6G communication systems
Atomically thin two-dimensional materials—including transitional metal dichalcogenides and hexagonal boron nitride—can exhibit non-volatile resistive switching. This switching behaviour could be used to create...
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FIT: Design and Implementation of Fast ID Tracking System on Chip for Vehicular Ad-hoc Networks
With the Internet of Things becoming mainstream, connectivity among cars has become mandatory. Although connectivity in a Vehicular Ad-hoc NETwork can improve users’ safety in transit, it creates an attack sur...
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Stiffness Prediction of Triaxial Braided Composites Accounting for Manufacturing Parameters
Textile composites are applied to aerospace and automotive industries because they have good fatigue characteristics, and higher specific stiffness and strength compared to metallic materials. In addition, tex...
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Multiobjective Optimization of Beam Structure for Bogie Frame Considering Fatigue-Life Extension
This paper addresses the multiobjective optimization of a brake end beam of a bogie frame with consideration of three elements: the stress, fatigue, and weight. A finite-element analysis (FEA) is performed to ...
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Strain-resilient electrical functionality in thin-film metal electrodes using two-dimensional interlayers
Flexible electrodes that allow electrical conductance to be maintained during mechanical deformation are required for the development of wearable electronics. However, flexible electrodes based on metal thin f...
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Design and Implementation of Hardware-Based Remote Attestation for a Secure Internet of Things
In general, Internet of Things (IoT) devices collect status information or operate according to control commands from other devices. If the safety and reliability of externally accessed devices are compromised...
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An aquatic-vision-inspired camera based on a monocentric lens and a silicon nanorod photodiode array
Conventional wide-field-of-view cameras consist of multi-lens optics and flat image sensor arrays, which makes them bulky and heavy. As a result, they are poorly suited to advanced mobile applications such as ...
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Analogue switches made from boron nitride monolayers for application in 5G and terahertz communication systems
Hexagonal boron nitride (hBN) has a large bandgap, high phonon energies and an atomically smooth surface absent of dangling bonds. As a result, it has been widely used as a dielectric to investigate electron p...
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Optimal vibration image size determination for convolutional neural network based fluid-film rotor-bearing system diagnosis
This paper suggests an image gradient based method that determines the optimal image size for convolutional neural network (CNN)-based diagnosis of fluid-film rotorbearing systems. As distinct patterns improve...
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Virtual Reality-based Control of Robotic Endoscope in Laparoscopic Surgery
Robotic laparoscopic surgery has provided various benefits, but during the surgery, the surgeons are experiencing uncomfortable positioning issue which leads to neck pain and back pain. So, for an enhanced & e...
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Development of an Automatic Instrument for Efficient Measuring the Joint’s Range of Motion
A range of motion (ROM) has been measured using several indices to judge the progress of ankylosing spondylitis (AS). However, measuring and calculating the ROM is time-consuming & labor-intensive and it would...
