3,443 Result(s)
within
Jun-**a **ao
Engineering
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Article
A Nitinol structure with functionally gradient pure titanium layers and hydroxyapatite over-coating for orthopedic implant applications
In this study, functionally gradient multi-layer coatings are developed on the Nitinol surface for orthopedic implant applications to eliminate potentially toxic Ni ion release and to improve biocompatibility....
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Article
Elimination of cracks in stainless steel casings via 3D printed sand molds with an internal topology structure
The important supporting component in a gas turbine is the casing, which has the characteristics of large size, complex structure, and thin wall. In the context of existing 3DP sand casting processes, casting ...
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Article
Open AccessFree strain consolidation of soft ground improved by stone columns under time-dependent loading considering smear effects
This paper presents a consolidation model for stone column-reinforced soft ground subjected to time-dependent loading under free strain condition. Smear effects and three types of loadings, namely, constant lo...
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Open AccessImpact of Transition Metal Layer Vacancy on the Structure and Performance of P2 Type Layered Sodium Cathode Material
Vacancy in the transition metal layer of sodium cathode material induces the formation lone-pair electrons in the O 2p orbital.
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Article
Practical Approach to Mission Autonomy of Multiple Unmanned Air Mobilities
Extensive research has been conducted on mission autonomy for multiple aircraft and air mobility operations because of the increasing demand for develo** manned-unmanned teaming. Besides a few studies, resea...
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Design and evaluation of a novel flexible, wear-resistant de-icing brush: a solution to road damage and wear
This study proposes a novel design of a flexible, wear-resistant de-icing brush to address the issues of significant road damage and the rapid wear caused by traditional de-icing machinery. The technique utili...
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Phase-shifted third harmonic modulation technique for induction heating applications to improve soft switching capability
Induction heating (IH) systems have been attracting more attention due to their direct heating capability. Moreover, IH systems have the advantages of fast heating performance, high efficiency, cleanliness, an...
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Fabrication and characterization of controllable micro wavy pattern on cylindrical surface using ultra-precision diamond turning system
The study investigated the fabrication and characterization of a controllable wavy patterned mold using an ultra-precision diamond machining system. The design method of cutting tool path for controllable wavy...
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Rapid Power Curtailment Method Considering Power Imbalance of the Wind Power Generation System
This paper proposes a rapid power curtailment method for a permanent magnet synchronous wind generation system to regulate the grid frequency in a weak grid. In a situation where rapid power curtailment is req...
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Article
35 kW isolated fuel-cell DC–DC converter design based on PWM resonant converter with hybrid switch structure
This paper presents the design of a 35 kW isolated fuel-cell DC–DC converter (FDC) with a hybrid switch structure. By utilizing a circuit structure and pulse-width modulation (PWM) method that enables the use ...
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Article
Parameter Optimization of Plow Mixer Structure Based on EDEM
Due to the dynamic complexity and diversity of structural parameters, the mixing efficiency improving of plow mixer is a challenge. In this study, the mixing behavior of particles simulated by the discrete ele...
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Article
Seawater-based soybean urease for calcareous sand biomineralization
In tropical islands, calcareous sand with poor engineering properties usually needs to be treated before it can be used as building materials. Considering the scarcity of freshwater in these areas, this study ...
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Article
A fatigue life analysis method for shallow curved hydraulic pipes with unstable alternating stress
Fatigue failure of hydraulic pipes, resulting from unstable alternating stress, is a common type of failure for hydraulic systems. In engineering, the reality of working with perfect straight pipes is nonexist...
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Open AccessPathway to Decarbonization Through Industrial Energy Efficiency: Micro and Macro Perspectives from Compressed Air Usage
Energy audits directly provided the industrial sector with reduced energy costs and avoided emissions. Still, they also lead to far-reaching indirect and induced local, regional, and national benefits. This pa...
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Article
Influence of cooling rate upon weld metal microstructural evolution behaviors of EH36 shipbuilding steel
Microstructural evolution features have been systematically investigated for the weld metal of EH36 shipbuilding steel under an in situ confocal scanning laser microscope. The influence of cooling rate on micr...
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Article
Strength Evaluation of Flush End-Plate Connection Using Triangular Haunch in Pipe Rack
In this paper, cyclic tests and finite element analyses were conducted on the flush end-plate connection of a pipe rack, with the haunch shape attached to the bottom of a beam as a variable. The cyclic test re...
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Fatigue life prediction analysis of automobile suspension system bracket considering residual stress due to thermal stress
The stabilizer-bracket, one of the parts constituting the suspension, is mainly manufactured through welding due to its complicated shape. Shape fabrication through welding has residual stress due to mechanica...
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Article
Flow field measurements around a marine propeller tip and vortex identification procedures
Propeller cavitation is one of the main causes of pressure fluctuation and noise around marine propellers, and tip vortex cavitation is one of the main causes of high-frequency underwater radiated noise. To pr...
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Article
Comparison of laser cladding properties of tantalum and tantalum pentoxide powders on titanium substrates
Tantalum (Ta) has excellent mechanical properties, biocompatibility, and corrosion resistance. However, its application is limited by its high cost. Tantalum pentoxide (Ta2O5), a stable oxide of Ta, is a key role...
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Article
Directed energy deposition process optimization and factor interaction analysis by response surface methodology
The purpose of this study is to optimize the critical parameters of the directed energy deposition (DED) process using the response surface methodology (RSM) and central composite design (CCD). The experiments...
