Materials Literature
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Rubber is viscoelastic in nature and used in a variety of industrial applications. Rubber mounts are used to dampen vibration and shock. Damping, fatigue and dynamic properties of rubber mounts depend to a large extent on chemical ingredients mixed with the rubber. Natural rubber is the most widely used polymer for co…
The "Karlsruher Flussgebietstage" is a biannual international symposium held at the Institute of Water and River Basin Management (IWG) of KIT. The symposium is a platform for the scientific exchange on specific issues of river basin management. The meeting in 2013 was focused on solids in river basins. Solids play an…
Mannich base was synthesized and characterized using FT-IR. H1NMR, 2D NMR, C13 NMR and Mass spectral studies and it was tested as a corrosion inhibitor for mild steel in 5% HCl solution using weight loss method over the temperature range of 303 – 353K. The inhibition efficiency was increased with respect to concentrat…
Zinc sulfide (ZnS) quantum dots (QDs) were prepared via a novel solid state reaction by milling appropriate amounts of zinc acetate and thioacetamide at room temperature. The structural nature and optical properties of the as-synthesized nanoparticles were characterized by using:X-ray diffraction (XRD), energy dispe…
Automatic handling of limp materials is still a challenge. For efficient handling a universal gripping technique is needed to enable robots to grip a wide variety of materials. The vacuum gripper is used for lifting the knitted fabric.The results of examine show that better results are obtained when the gripper is set…
The electric field distribution on insulators in a gas-solid insulation system after energizing with a dc voltage changes from an initial capacitive to a stationary resistive field distribution.While the capacitive field distribution -with a given geometry of the insulator -is determined by the permittivity of dielect…
Die deutsche Holzindustrie erleidet auf Grund niedriger zulassiger Gesamtgewichte bei Lkw-Transporten einen Wettbewerbsnachtteil im Vergleich zu anderen Staaten Europas. Besonders im Hinblick auf die letztlich stark angestiegenen Dieselpreise wird daher schon langer eine Anpassung bzw. Erhohung der zulassigen Gewichts…
Linac yang dioperasikan di atas 10 MV akan menghasilkan radiasi sekunder berupa emisi neutron yang berasal dari reaksi energi foton tinggi menumbuk material penyusun linac seperti target, kolimator dan filter. Radiasi sekunder ini akan menaikkan resiko kanker sekunder pada pasien akibat bertambahnya dosis radiasi yang…
We use plasma etched Black Si (BS)[1][2] nanostructures to achieve low reflectance due to the resulting graded refractive index at the Si-air interface. The goal of this investigation is to develop a suitable texturing method for Si solar cells. Branz et al. [3]report below 3% average reflectance for their 16.8% effic…
Possibility of acrylamide (AA)-2-acrylamido-2-methyl propane sulfonic acid (AMPS) copolymer for dosimetric applications has been investigated using Fourier transform infrared (FTIR) spectroscopy technique. The copolymer has exhibited various FTIR absorption bands, characteristic of copolymer. On irradiation, a change…
Vermiculites with impurities of amphibole, a dry fine residue and calcined materials from three deposits in the province of Co´rdoba, Argentina, were studied. From a commercial perspective, amphiboles are considered as ‘‘asbestos’’, a group of silicate minerals with strong and flexible fibres that are heat resistant a…
Fouling describes unwanted deposits on heat transferring surfaces leading to reduced heat transfer and increased heat transfer resistance. Hence, fouling is a severe issue particularly in food processing because product quality and safety cannot be ensured, and plant efficiency is reduced. As a result, cleaning is per…
This report proposes a method for the design of a fabric for specified mechanical properties at multiple biaxial-stress states.
Viscose fiber provides fabrics with superior clothing comfort and appearance characteristics. Vortex and air jet spinning technology provides yarn with unique structures, which can be produced at a high production rates. The unique properties of viscose fibers on one hand and vortex and air jet spinning technology on…
This paper reports the microbiologically induced corrosion (MIC) behavior of aluminum alloy in the chloride medium containing Pseudomonas aerinosa bacteria. MIC studies were performed at room temperature for 15 and 30 day in 2% NaCl electrolyte. System I consisted of 2% NaCl by weight (i.e.,uninoculated) as the contro…
In this paper a critical review has been carried out on the influence of viscoelastic properties of propellants on starting transient of solid rocket motors and further numerical studies have been carried out for the thermo viscoelastic characterization of an idealized solid propellant grain using Prony series viscoel…
The transport behavior of EPDM/PVC composites has been investigated using the three halogenated hydrocarbons; methylene chloride, chloroform and carbon tetrachloride, which are part of the homologous series of the chloromethanes, as probe molecules. Sulphur and peroxide were used for crosslinking the matrix. The depen…
In this analysis, crystals were grown by adopting simple gel technique by single diffusion method. Effect of various parameters like gel pH, gel aging, gel density and concentration of reactants on the growth of these crystals was studied. Crystals having different morphologies and habits were obtained. Whitish, pale…
ABSTRACT In this paper, a shape memory alloy hybrid composite (SMAHC) was developed and characterized by theoretical and experimental analysis, in the elastic regime, involving the fabrication of laminated beams. The hybrid beam was made of epoxy matrix reinforced with SMA wires and E-glass chopped mat, with and witho…
The CANLUB graphite coating is exclusively used in CANDU nuclear reactors to protect fuel sheaths from stress corrosion cracking. However, uncertainties regarding its quality control, manufacturing continuity, and performance at high burnups provide sufficient motivation for exploring alternative coating materials. Si…