Materials Literature
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This tutorial paper reviews the fundamentals of different methods for current decomposition and non-active power compensation in polyphase power systems. The basic concepts and the properties of the instantaneous active and reactive power theory and of the active/reactive average power theory are discussed and critica…
The mathematical modeling of the processes of elastoplastic deformation and failure of structural steels and alloys under non-stationary and non-symmetric hard and soft modes of cyclic loading is considered. The main assumptions and equations of the theory of elastoplastic deformation are given. The theory of elastopl…
In the recent years, the growth of glass fibre reinforced plastic (GFRP) is significantly higher than that of steel. In this study, the GFRP filled with 1 & 2% volume fraction of nano Alumina (Al 2 O 3 ) particles were tested for their tribological behaviour. The wear maps were utilized to study the influence of contr…
The effects of surface tension on picking up a minute object by a water drop were studied experimentally. The self-centering effects of the proposed method of picking up a microchip was demonstrated in the 1st report. In this method, the stability of forming a drop and sufficient capillary force for lifting up the chi…
After a brief introduction in Section 1.1.1, Section 1.1.2 of this chapter presents a formal definition of dual (reciprocal) bases and a brief overview of applications of the reciprocal lattice basis to lattice geometry, diffraction conditions and Fourier synthesis of functions with the periodicity of the crystal. In…
Cellulose nanofibers were isolated from softwood pulp by mechanical fibrillation process and were utilized to develop biobased nanocomposites for biomedical application. Different processing techniques were attempted to develop nanocomposites for use as artificial ligament or tendon and the composites mechanical prope…
The main aim of this research work is to investigate by the means of X-ray analysis methods the spent catalysts and the recovered valuable metals in order to prove the efficiency of the recycling process as a main environmental issue.The materials used for analysis were spent catalyst samples based on Cu, Cr, Zn, Al,…
Wood is broadly used for automotive parts, construction materials, and equipment for leisure-time amusement; however, its application for journal bearings has been restricted due to its low strength and poor tribological characteristics. In this work, Falcataria moluccana or Paraserianthes moluccana , locally known as…
The single crystals of pure glycine phosphite (pure-GPI) and potassium hydroxide doped glycine phosphite (KOH-GPI) were grown by slow evaporation and Sankaranarayanan and Ramasamy (SR) method. Colourless crystal with cylindrical shape about maximum diameter of 18 mm and 28 mm length was obtained with in a month. The m…
The development of artificial organs and implants for replacement of injured and diseased hard tissues such as bones, teeth and joints is highly desired in orthopedic surgery. Orthopedic prostheses have shown an enormous success in restoring the function and offering high quality of life to millions of individuals eac…
High Density Polyethylene (HDPE) composites have beenmade using light weight cenospheres as fillermaterial in different volume fractions alongwith the incorporation of HDPE-g-DBMcompatibilizer for improved interfacial adhesion and tribological characteristics. Cenospheres are hollow ceramic based microspheres found in…
A large number of control rod cracks were detected during the refuelling outage of the twin reactors Oskarshamn 3 and Forsmark 3 in the fall of 2008. The extensive damage investigation finally lead to the restart of both reactors at the end of 2008 under the condition that further studies would be conducted in order t…
Corrosion risk for the materials (casing, pipes) proposed for the Soultz project at 200°C was evaluated in laboratory in order to estimate the corrosion rate before the beginning of the geothermal power plant running. After a short review about the both corrosion and scaling works done at Soultz, detail laboratory exp…
Ultrasound microbubble (MB)-enhanced imaging is currently applied in the clinic for heart and liver dia gnosis. The potential use of quantifying microvascular flow has been researched for over 20 years. The necessity f or investigating the acoustics of single MBs stems from the lack of a single or a predictable distri…
A short collection of mechanical seal performance calculations has always been included in the earlier and current editions of the seal standard API 682 and the co-branded version of ISO 21049. The new draft of the Fourth Edition of API 682 and the planned update of ISO 21049 include a significantly expanded version o…
VOLUME 12 – ELECTRON MICROSCOPY SPECIAL ISSUE 9 Single walled carbon nanotubes (SWCNTs) have recently been in the spotlight because of their apparent toxicity to bacteria, triggering further research into their properties and the effects on health and the environment. Now researchers from the Nanyang Technological Uni…
Generator transformers have losses in the structural parts besides that due to stray fields from windings also due to high current leads. High current leads can cause high stray losses and/or high temperature rises. In this paper an overview of the advantages and disadvantages of different leads arrangement is given.…
In the previous chapter, regularities of heating and cooling bodies of various geometrical configurations were discussed and a generalized equation for the determination of cooling time for bodies of any shape was presented. A key parameter in this equation is the Kondratjev form factor (coefficient K). This coefficie…
Microtensile bond strength of radicular dentin bonded to glass fiber posts with self adhesive cements. Purpose. The purpose of this study was to evaluate the microtensile bond strength (μTBS) of glass fiber posts bonded to intraradicular dentin when self-adhesive resin cements were used. Methods. Eighty single-rooted…
A.11 Diagram of aerogel backbone with composition 50 mol % BTMSPA, 15 mol % BTESE ………………………………………..……………………..… 186 A.12 Diagram of aerogel backbone with composition 50 mol % BTMSPA, 45 mol % BTESE ……………………………………………..……………..…… 187 A.13 Diagram of aerogel backbone with composition 50 mol % BTMSPA, 15 mol % BTMSH ……...………