Materials Literature
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Frequency response analysis (FRA) is a method which is used to detect mechanical faults in transformers. The FRA response of a transformer is determined by its geometry and material properties, and it can be considered as the transformer’s fingerprint. If there are any mechanical changes in the transformer, for exampl…
A non-equilibrium phase field model (NPFM) is proposed to examine the three-dimensional coalescence characteristics of low melting point alloy (LMPA) fillers, widely used for self-organized interconnection applications. This model sufficiently considers the non-equilibrium process during phase transitions, resulting i…
We propose a method to generate spherical micro-mirror by anodic bonding. A flat silicon plate is bent with fulcrum to form a spherical shape by anodic bonding. Convex spherical surface is generated inside the fulcrum by the bending moment generated in circumference of micro-mirror. Due to the bent surface of silicon…
To reduce cost of structural composites the development of more efficient manufacturing methods is of great interest. Sheet forming of thermoset prepreg, also known as hot drape forming, has been a promising manufacturing method for decades. An automatic tape layer (ATL) can be used to perform the lay-up in an efficie…
In the national [1] and foreign [2] literature the methods of improving the homogeneity of the structure of castings using forced convection of the solidifying metal in the casting mould or the crystallizer are presented. This article presents the influence of chosen parameters of the rotating electromagnetic filed th…
Metamaterials (MTM) have recently attracted much attention in electromagnetic engineering. Initial studies have focused on understanding their electromagnetic properties and responses, but applications have also begun to appear in the literature. This paper presents visualization of electromagnetic waves interacting w…
Electrons emitted from the surface of a material subjected to heat, electromagnetic radiation and electric field, are respectively known as thermionic emission, photoemission and field emission.In many applications based on electron emission such as vacuum tubes, thermionic energy conversion systems, field emission di…
Journal of Inequalities and Applications is a peer-reviewed open access journal published under the brand SpringerOpen. The aim of this journal is to provide ...
Three topics in fluid mechanics are dealt with in this dissertation, namely (i) reactive spreading and recoil of oil on water, (ii) free film formation theory and experiment, and (iii) how humpback whale flippers delay stall. Reactive spreading of an oil droplet on water is described in Chapter 1. Small amounts of aci…
The effect of aging temperature on the magnetic properties has been studied. The magnetic measurement results indicate that the remanence decreases with increasing aging temperature Ta，and the coercivity has a maximum value at Ta=690℃. After the first aging， the degree of ordering increases with Ta， which shows that t…
In this work, the microstructural effects of stress state and strain rate dependent plasticity, damage, and failure of aluminum and magnesium alloys were examined. Several experimental techniques were employed to implement the test data into a physics-based internal state variable plasticity-damage model. Effects aris…
NaBH4-Fuel Cell system, which can respond to increasing demands for power in a mobile device, has attracted much attention as an alternative power source for lithium batteries due to the advantages. However, before the system can be of practical use, hydrogen must be efficiently generated from the NaBH4. We have condu…
The establishment of rapid synthesis process at a low temperature of thermoelectric SrTiO3 was tried by using the polymerized complex (PC) process and the pulsed current heating (PCH) method. The non-doped and La- or Y- doped SrTiO3 powders could be synthesized by the PC process without precipitation of any second pha…
The reduction of nitroaromatic compound bifenox (methyl 5-(2,4-dichlorophenoxy)-2-nitrobenzoate) was studied in aprotic solvents in the absence or presence of cyclodextrin (CD) molecules of different cavity sizes. βCD and γCD form complexes with bifenox in DMSO with the complex formation constants (5 ± 2) × 102 M–1 [β…
This paper deals with a countermeasure against pattern formation phenomena generated on thin sheet winder using dynamic absorbers. The thin sheet is widely used as paper, aluminum, etc. Pattern formation phenomena of the wound sheet sometimes occur in operation because of the viscoelastic characteristics of the sheet.…
The R6 defect assessment procedure, used commonly in the UK nuclear industry to assess the significance of defects in structures, uses the Failure Assessment Diagram to evaluate limiting parameters whilst accounting for the effects of plasticity. The interaction of primary and secondary stress is accounted for within…
Foaming behavior of 6061 aluminum sheet-type precursor by free foaming or by foaming in die cavity was examined. Projected area of the precursor during foaming process was recorded by two video cameras to analyze the foaming behavior of both vertical (thickness) and horizontal (in-plane) directions. The free foaming b…
Thin films of single crystal ferroelectric material are constrained by their substrate to a fixed state of macroscopic in-plane strain. Domain structures can form to minimize the overall energy of the system by matching the imposed strain conditions in an average sense. We study low-energy equilibrium states of ferroe…
We report here a simple emulsion-phase reduction strategy for the one-step synthesis of highly dispersed aggregates from microspheres, to flower-like cubes, to octahedra at . The size and shape of aggregates are controlled by varying the reaction temperature and surfactant concentration. Highly dispersed microspheres…
Single phase β-Zn4Sb3 was prepared by applying a two-stage heat treatment and the carrier concentration of β-Zn4Sb3 was controlled by doping with doping elements. The undoped and doped samples were prepared by direct melting followed by two-stage heat treatment at 723 and 673 K after solidification of the samples in s…