Materials Literature
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Production of versatile composites is a very attractive field. Carbon containing epoxy resins are one of the most relevant reinforced plastics used for a wide number of applications. In this research, we studied the influence of five different commercial biochar samples for the selective enhancement of brittleness and…
Background: The synthesis of silver nanoparticles (AgNPs) using food waste materials and their biomedical applications have garnered considerable attention recently. Methods: Here, we investigated the synthesis of AgNPs using an aqueous extract of outer peel of Pisum sativum under different lighting conditions using s…
Biological tissues subjected to rubbing, such as the cornea and eyelid or articular cartilage, are covered in brushy, hydrated mucous structures in order to reduce the shear stress on the tissue. To mimic such biological tissues, we have prepared polyacrylamide (PAAm) hydrogels with various concentrations of un-cross-…
Positioning on the global political arena of the Arctic Territory as the exclusive economic zone of the Russian Federation requires, first of all, the development of a regional transport network, including cargo and passenger traffic for the sustainable development of the region. The solution of such a transportation…
In the wake of the breakthrough being by additive manufacturing (AM), there is another rapidly growing manufacturing progress: 4D printing (4DP). It is basically AM with, inter alia, smart materials (SMs). Owing to the stimulus-responsive behaviors of these materials, the parts so manufactured are imbued with the abil…
In this paper the phase stability and solubility limits of high-entropy alloys are studied, using a diffusion couple approach. Diffusion couples have been fabricated using the established Cantor alloy (CrMnFeCoNi) and a commercial fcc CoNiCrMo alloy (MP35N®) with constituent or foreign elements as diffusion partners.…
Singularity is an inherent property of robotic manipulators. A manipulator becomes singular when it gains or losses degrees of freedom at a particular configuration. In this work, a type of singularities caused by special shapes of platforms, either the mobile or the base platform, is addressed. This type of singulari…
In this work, two waste biomass (pine sawdust, PW and gulmohar seeds, SG) were thermochemically converted with and without catalysts to find out their potential towards producing fuels and chemicals. Physicochemical characterization of these biomass confirmed their bioenergy potential for producing renewable fuel. The…
Zinc oxide (ZnO) microstructures were successfully fabricated by using the template free hydrothermal growth method. Crystalline phase, morphology, and elemental composition had been characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), and energy dispersive X-ray spectroscopy…
In this work, a comparative performance study was conducted on glass fibre-reinforced thermoplastic acrylic and thermosetting epoxy laminates produced by vacuum-assisted resin transfer moulding. Mechanical characterisation revealed that the acrylic-based composite had superior transverse tensile strength and mode-I fr…
There is a growing demand for use of alternative clean energy as against fossil fuel. In trying to meet these demands, researchers are investigating various approaches towards delivering affordable clean energy from the abundant biomass in our environment, including biodiesel. Therefore a review work on production of…
Metamorphic mechanisms belong to the class of mechanisms that are able to change their configurations sequentially to meet different requirements. In this paper, a holographic matrix representation for describing the topological structure of metamorphic mechanisms was proposed. The matrix includes the adjacency matrix…
Cu-Mg binary alloys consist of a relatively simple mixture of eutectic reactions (L ➔ f.c.c. Cu + MgCu2). Since they have different color, i.e., the copper with L* = 86, a* = 14, b* = 16 and the MgCu2 with L* = 91, a* = 3, b* = 11, it can be suggested that the compositional tailoring can control the overall color of t…
In the present work, attempts were made to fabricate Al-based nanocomposites by Friction Stir Welding (FSW) process. Al2O3 nanoparticles were added into the aluminum matrix for refining the microstructure of the nugget zone (NZ) and to restrict the growth of granularly in the heat-affected zone (HAZ). The effects of A…
Waste incorporation into clay ceramic is a worldwide accepted recycling procedure for environmentally friendly reuse of spent industrial materials. In the present work a clay ceramic from the city of Campos dos Goytacazes, Brazil, was, for the first time, investigated with different amounts, up to 10 wt%, of a solid w…
Nanoscale dynamic mechanical analysis (nanoDMA) was used to determine changes in surface viscoelastic properties of low-density polyethylene (LDPE) due to Ar plasma treatment. The experimental results show that the exposure of LDPE to high-power plasma produces a more solid-like response compared to low-power plasma.…
We undertook a three-dimensional analysis of the recrystallization that occurs in pure iron from the viewpoint of consistency between the growth direction of the recrystallized ferrite grains and the Johnson-Mehl-Avrami-Kolmogorov (JMAK) theory. Cold-rolled specimens were heated to 550 °C and, then, held at that tempe…
The high-entropy alloy coatings reinforced with nano oxides were synthesized by the atmospheric plasma spraying (APS). The crystal structure, microstructure, surface morphology, hardness and wear resistance properties of the CoCrFeNiAl and CoCrFeNiMo high-entropy alloy coatings are investigated. For CoCrFeNiAl high en…
In the last few decades, non-traditional machining made the machining process easier than the traditional machining method. Electric discharge machining (EDM) is one of the most prominent methods of non-traditional machining processes. By the use of EDM, a complex profile and high hardness materials can be easily mach…
This research investigates the effect of small amounts of drag-reducing polymer (DRP), (Partially hydrolysed polyacrylamide) on single phase water flow in 180° bends using both experimental and artificial neural network (ANN) modelling approach. The results show that, in both straight pipes and U-bend, drag reduction…