Modeling Nanotube Mechanics: Shear Modulus and Buckling Loads in SWCNTs
Entropy-Guided VIKOR Technique for Optimal Selection of Aluminium Hybrid Metal Matrix Composites
An Experimental Investigation on the Influence of Sn Addition and Aging Time on the Mechanical and Micro Structural Properties of AZ80-1.2RE Magnesium Alloy
Qualitative and Quantitative Analysis of Hot Rolled Ductile Cast Iron as Composite Structure in Building Elements
A Critical Review of Advanced Techniques to Improve Machining of Titanium Alloy (Grade 5)
An Investigation on Recent Trends in Metamaterial Types and its Applications
A Review on Plasma Ion Nitriding (PIN) Process
A Review on Friction and Wear Behaviors of Brake’s Friction Materials
Comparative Parabolic Rate Constant and Coating Properties of Nickel, Cobalt, Iron and Metal Oxide Based Coating: A Review
Electro-Chemical Discharge Machining- A review and Case study
Electrical Properties of Nanocomposite Polymer Gels based on PMMA-DMA/DMC-LiCLO2 -SiO2
Comparison Of Composite Proton Conducting Polymer Gel Electrolytes Containing Weak Aromatic Acids
Enhancement in Electrical Properties of PEO Based Nano-Composite Gel Electrolytes
Effect of Donor Number of Plasticizers on Conductivity of Polymer Electrolytes Containing NH4F
PMMA Based Polymer Gel Electrolyte Containing LiCF3SO3
In this paper an attempt has been made to theoretically find the variation of some important parameters of one of the arsenic fre Ge-Se glass system by the addition of In content. Various parameters like co-ordination number, floppy modes, bond energy, electro negativity, heat of atomization, cohesive energy and glass transition temperature have been calculated for Ge Se In (x=0,1,2,3,4,5,6) glass system. Glass transition temperature (Tg) is calculated by using 16 84-x x two approaches i.e. Tichy-Ticha and Lankhorst approaches. Tg seems to be increasing in theoretical calculations while average single bond energy is decreasing with the increase in the content of In.
This research presents the mechanical and metallurgical properties of dissimilar joints of AA5083-O and AA6061-T4 aluminum alloy. Two rotational speeds, 630 and 1600 rpm and three traverse speeds 16, 25, and 40 mm/min were applied to perform the joining process. Macrostructural observations were done to evaluate the weld quality and some semi-circular profiles appeared on the trailing side of the weld and flash were also visible on the retreating side of the joint. Optical microscopy was used to determine the orientation and distribution of the grains in the weld and the adjacent zones. Dynamic recrystallization was evident in the dissimilar joint and the fine grain structure confirmed this. The material in the stir zone contained a mixture of both materials but AA6061-T4 which was fixed on the advancing side dominated the stir zone and thus it influenced the joint performance. Mechanical properties of the joints i.e. ultimate strength, elongation, and microhardness were determined for different weld zones and material combinations. Material combinations included joints made of similar AA5083-O or AA6061-T4 as well as dissimilar joints of AA5083-O and AA6061-T4. The dissimilar joint exhibited intermediate mechanical properties. Hardness values were generally less in the advancing side compared to the retreating side and also they increased from the bottom towards the top of the joint.
Phosphate glasses with composition 50P2O5-30CaO-(20-x) Li2O-xCeO2 with x varying from 0-2.0 mol % were prepared using the conventional melt quench technique. The amorphous nature of prepared glasses was confirmed from the XRD(X-Ray Diffraction) spectra. The density and Molar volume of the glasses was found using the Archimedes principle. The value of the density lies in the range of 3.58-3.71 g/cm3 . The density of the prepared glasses was found to increase with the concentration of CeO2 . This was explained as the molecular weight of CeO2 is more as compared to the molecular weight of Li2O. The Raman spectra was obtained for the prepared glass samples and it was found that no new peaks are formed with the doping of CeO2 , and only there is a change in the intensity of peaks and the peaks are red shifted. The bandgap energy is found to decrease with CeO2 doping due to the formation of more NBOs.
This paper presents the electrical properties of the randomly distributed metallic (Co, Ni and Fe) nano/micro wires on Silicon. Deposition was carried out potentiostatically into the pores of the track-etch polycarbonate membrane spin coated onto the Silicon substrate. Spin coated films were irradiated with 150MeV Ni (+11) ions at a fluence of 8E7 2 ions/cm , followed by UV irradiation and chemically etching in aqueous NaOH (6N, at room temperature). Later morphological, and electrical properties of the so deposited nano-/micro structures were studied.
Effect of polymer (PMMA) and salt (LiCF3SO3 ) on the conducting behaviour of polymer gel electrolytes in non-volatile solvent (PC) has been studied. The maximum ionic conductivity ( = 2.92 mS/cm) of polymer gel electrolyte has been observed at room temperature. An anomalous conducting behaviour is observed at small content of PMMA addition in gel electrolyte. Small increase in conductivity observed with increasing temperature (range 10o -70o C) is in factor-wise only, which makes these gel electrolytes suitable for many device applications.
FRP composites have been the part and parcel of many industrial and domestic applications. It is not only limited to aerospace, though the roots are from aerospace there is a paradigm shift in methods and applications. It covers wide range of products from headgear to aircrafts. Post curing leads to improved properties due to better interfacial bonding between matrix and fiber. Maximum amount of time is consumed in post curing of polymer composites. In this paper alternate method particularly radiation post curing is discussed in detail. Comparison between thermal curing with IR and other radiation curing methods is reviewed.