Materials Literature
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This paper proposes a method for stator and rotor temperature estimation based on energy model for Permanent Magnet Synchronous Motor (PMSM) used in hybrid electric vehicle. The temperature behavior is obtained from motor losses and cooling system model. The losses in stator and rotor is calculated separately. The con…
This paper proposes a novel adaptive recursive discrete Fourier transform (ARDFT) technique for the reference current generation of single-phase shunt active power filters (APFs). The suggested method is robust to input frequency changes and exactly extracts the reference current of the APF. Modeling of the converter…
HTPB/AP계 혼합형 고체 추진제의 점도와 기계적 특성은 산화제인 AP의 입자 크기에 크게 영향을 받는다. $190{\mu}m$ 의 크기의 AP와 $7{\mu}m$ 크기의 AP를 사용한 HTPB/AP 추진제에서 큰 입자/작은 입자의 비율이 70/30~60/40 범위인 조성의 추진제가 매우 낮은 점도를 나타났는데, 이것은 고체입자의 충전율이 높은 상태이기 때문이다. 추진제의 인장강도 시험에서 Toughness는 큰 입자의 함량이 많아질수록 증가하는 것으로 나타났다. 낮은 점도와 좋은 인장강도를 동시에 고려할 때, AP 큰 입자와 작은 입자를 70/30으로 사용하는…
The application of Metal Matrix Composites (MMCs) is restricted by the availability of properly developed fabrication methods. The main challenge here is the fabrication and welding of MMCs in a cost effective way. In the present study, synthesis of AA6061-4.5%Cu- 10%SiC composite was done by stir casting method. The…
An original mathematical model of the interaction of terahertz (THz) electromagnetic waves with periodic gratings of graphene micro- and nanoribbons is based on the solution to the boundary-value problem of diffraction for the Maxwell equations with electrodynamic boundary conditions and material equations. The electr…
X-ray phase-contrast techniques can measure electron density gradients in high-energy-density plasmas through refraction induced phase shifts. An 8 keV Talbot-Lau interferometer consisting of free standing ultrathin gratings was deployed at an ultra-short, high-intensity laser system using K-shell emission from a 1-30…
A method to shape thin polymer films into periodic array of lenses is presented. A liquid layer placed on top of a much thinner polymer film is exposed to a transverse temperature gradient. The upper liquid layer undergoes the short-wavelength Bénard-Marangoni instability, which leads to periodic shear stresses at the…
The definition of stabilization centers was introduced almost two decades ago. They are centers of noncovalent long range interaction clusters, believed to have a role in maintaining the three-dimensional structure of proteins by preventing their decay due to their cooperative long range interactions. Here, this hypot…
Bis(pyrazol‐1‐yl)(pyridin‐x‐yl)methane ligands give rise to a rich variety of complexes with a wide range of transition metals. The derivatives with x = 2 act as monotopic and tripodal ligands. In the cases of ligands with x = 3 or 4, tripodal coordination is no longer possible and they generally behave as ditopic lig…
It is shown experimentally that the irradiation of thin Al and Au films of thickness 50 to 100 nm on a silicate glass surface by electrons results in effects that differ principally depending on the electron energy. For energies of 5 to 15 keV, the irradiation leads to an increase in the film thickness throughout the…
Microstructure, thermal, electrical and mechanical properties of the hot-extruded and hotrolled AlMnScZr alloys were studied. The electrical resistometry and microhardness together with differential scanning calorimetry measurements were compared with microstructure development observed by transmission electron micros…
High performance composites are exposed to severe loading and environmental conditions. In this work, mechanical properties of Fiberglass Reinforced Polyester (FRP) manufactured by resin transfer molding were evaluated. The effect of the strain rate on mechanical properties under three quasi-static testing conditions,…
The influence of the microarc oxidation parameters as electrical voltage and process duration on the surface morphology and topography, wettability and chemical composition of calcium phosphate coatings on the low elastic module Ti-40mas.%Nb (Ti-40Nb) alloy surface has been investigated. The linear growth of thickness…
We investigate a resonant photodiode transferred onto a gold mirror. This comprises a backside dielectric subwavelength periodic structure and an absorbing region as thin as 90 nm. Electro-optical characterizations of individual pixels featuring focal-plane array-compatible geometries are fully explained by electro-ma…
Simulations for the density and potential profiles of the ions in the planar electrical double layer of a model electrolyte or an ionic liquid are reported. The ions of a real electrolyte or an ionic liquid are usually not spheres; in ionic liquids, the cations are molecular ions. In the past, this asymmetry has been…
Abstract A highly efficient nanoplatform for photodynamic therapy was obtained by covalent conjugation of verteporfin with mesoporous silica nanoparticles. Verteporfin has an intense absorption band in the red region of the Vis spectrum ensuring a deeper tissue penetration; this feature makes verteporfin‐based formula…
In this paper, a simple and low cost method for determination of Pb2+ in solution, using bare Metglas alloy 2826MB as the resonator, is reported. Based on the replacement reaction mechanism of the Pb2+ in the solution with Fe and Ni in the Metglas 2826MB ribbon surface, the Pb replaced on the resonator can increase th…
Performance improvement of AlGaN-based deep ultraviolet light-emitting diodes with double electron blocking layers* , Zhang, Cheng, Hui-Qing, Sun, Li, Xu-Na, Sun, Hao, Fan, Xuan-Cong, Zhang, Zhu-Ding, Guo, Zhi-You
The increasing demand for natural river sand supply for the use in construction industry along with the issue of environmental problem posed by the dumping of cockle shell, a by-product from cockle business have initiated research towards producing a more environmental friendly concrete. This research explores the pot…
The main methods of flame-retardant finishing of different-purpose textiles (technical textiles, home textiles, clothing and decorative fabrics, etc.) were overviewed. The flammability data for the textiles of different chemical nature were presented.