Materials Literature
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Liquefied natural gas (LNG) has the cryogenic temperature of –160°C to ensure the minimum storage volume when stored in LNG containers. Among various types of LNG storage containers, the full containment above-ground type with a double safety system (outer concrete tank and inner steel tank) is very common. Normally,…
In recent days, there was a significant development on the electrical, thermal, mechanical, physical, chemical, magnetic and optical properties of the polyamide enamel, varnish and other insulating materials by the addition of nano fillers to it. Enamel was used in High Voltage Apparatuses used in Medical Electronics…
We present the design, simulation, and characterization of structurally reconfigurable metamaterials showing terahertz (THz) frequency switching with polarization-insensitive response. The metamaterial unit cell consists of an octagon ring with eight out-of-plane deformable cantilevers placed at each of its vertex. Th…
PI/Al2O3films have been extensively studied due to its' excellent corona resistance. In this paper, a series of PI/Al2O3films with inorganic content of 16% are prepared via in-situ polymerization method. The Al2O3filler is dispersed by three different methods include mechanical dispersion, sanding mechanical dispersio…
The charging phenomenon in the dielectric materials often occurs in various radiation environments such as in the outer space and in the irradiation facilities. The irradiated charge accumulation in the dielectric materials can cause a permanent change on physical and chemical structure of the material which influence…
Abstract As a new liquid crystalline organogelator, tris[4-(benzoylamino)phenyl]amine derivatives were synthesized. Tris[4-(benzoylamino)phenyl]amine derivatives with six or nine alkoxy groups exhibited an enantiotropic hexagonal columnar phase. Furthermore tris[4-(benzoylamino)phenyl]amine derivatives gelled organic…
Glow corona is a kind of streamer-free corona that can suppress upward leaders in transmission lines. Thus, it has good application potential in lightning protection. This paper investigates its corona characteristics. The suppression characteristic of glow corona on streamer is studied in air gap under negative DC vo…
Fluorine doped tin oxide (FTO) thin films were prepared at different deposition temperatures using the spray pyrolysis deposition (SPD) technique. The deposition temperature were ranging from 250°C °C to 450°C and the precursor used was 0.5M of SnCl 4 .5H 2 O and 1.527M of NH 4 F completely dissolved in distilled wate…
Multiferroic composites of ( x )NiFe 2 O 4 + (1- x )BaTiO 3 with x = 0.2, 0.3 and 0.4 and ( x )CoFe 2 O 4 + (1- x )BaTiO 3 with x = 0.2, and 0.4 have been synthesized by mixing NiFe 2 O 4 (CoFe 2 O 4 ) spinel and BaTiO 3 piezoelectric. Distribution of Ni (Co) ions on 8 a and 16 d positions of spinel lattice (space gro…
The mutual influence of orthogonal magnetic fields on ferrite magnetic characteristics was experimentally studied. Experiments were performed in a pulse mode using a compound specimen. An induction probe positioned in the gap between its parts was used in magnetic-field measurements. A numerical simulation showed that…
A series of unprecedentedly wide Curie-temperature windows (CTWs) are realized in a hexagonal magnetoelastic ferroic system by En-Ke Liu, Wen-Hong Wang, and co-workers in article number 1500076. Based on the platform, the strongly coupled magnetostructural phase transitions can be highly tuned for desired magnetic mul…
In this research, a reliable negative differential mobility model was retrieved based on the experimental data using an iteration method. The experimental charge packet profiles were obtained by the polarization of the electron beam irradiated LDPE films (applied electric field intensity ranges from 30 kV/mm to 50 kV/…
The paper presents the investigation of GdNiH 3.2 and TbNiH 3.4 hydrides magnetic transitions and magnetocaloric properties. The isothermal magnetization data in the fields up to 5T are obtained for GdNi and TbNi compounds and their hydrides and the values of magnetic entropy change are calculated. The maximum values…
In situ Raman spectroscopic measurements have been carried out at high pressure up to 33 GPa using a diamond anvil cell to investigate the structural transitions in relaxor ferroelectric 0.85Pb(Zn1/3Nb2/3)O3-0.15PbTiO3. Raman modes are found to be broad due to substitutional disorder at the B-site of the perovskite. E…
This paper presents an evolutionary optimization approach to the control of antagonistic shape memory alloy (SMA) actuator arrays. The actuator and control architectures are inspired by the neuromuscular system, which achieves smooth and accurate movements despite nonlinearities and uncertainties in control and estima…
Sifat fisik dan fungsi kain poliester dapat ditingkatkan melalui modifikasi permukaan tekstil menggunakan teknologi plasma. Pada penelitian ini, modifikasi pada permukaan kain poliester diperoleh melalui perlakuan plasma lucutan korona pada tekanan atmosfer. Plasma lucutan korona dihasilkan melalui ionisasi udara norm…
Thermogravimetry is used to study the oxidation kinetics of an AMg2 alloy with praseodymium. The alloy oxidation is shown to obey a hyperbolic law. Praseodymium additions decrease the oxidation rate; this fact is indicated by an increase in the apparent activation energy from 39.3 to 71.5 kJ/mol. The true oxidation ra…
For continuous fiber-reinforced ceramic matrix composites, there is an extensive knowledge of the influence of specimen geometry on the failure mode and the determined strength in bending tests. In contrast, there are almost no studies on this topic for short-fiber-reinforced CMC, and as a consequence no testing stand…
Within the scope of the project ENERTHERM: Energy efficiency of thermal processes which is funded by the Bavarian Ministry of Economy (BMWi) components and systems for high-temperature are being developed. Monolithic oxide ceramics (mullite, Al 2 O 3 ) and oxide-fiber reinforced ceramics (O-CMC) show a high potential…
Electronics based on nanomaterials (e.g. nanoparticles, nanotubes, nanowires, thin films) have been attracting interest recently due to their strain sensing characteristics. Strain sensors comprised of carbon nanotubes (CNTs) and silver nanowires, or graphene serve as good alternatives for developing new sensors becau…