Applied Mechanics and Materials

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EISSN : 1662-7482
Published by: CrossRef Test Account (10.4028)
Total articles ≅ 110,131
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M. Nagamadhu, S.B. Kivade
Applied Mechanics and Materials, Volume 903, pp 65-72; https://doi.org/10.4028/www.scientific.net/amm.903.65

Abstract:
The attractiveness of glass is something that occupied the world market with a unique claim. It has many applications that go beyond the provision of visual aesthetics, which includes a view of the inside and out. Due to extreme levels of clarity, structural glazing may be so transparent that it may go unnoticed by design or make a strong visual impact such as the focal point of a building. This paper focused on structural glass with various laminated/laminated conditions that were used to investigate the Dynamic Mechanical Properties. The storage modulus (G'), loss modulus (G'') and damping factor (tan delta) were determined at various levels, ranging from room temperature to elevated temperatures (250 °C) to understand the behavior of glass structure with and without laminated glass over a range of temperatures. The G' & G'' were tested to understand the effect of bonding, fracture behavior between the pure glass and laminated glass to observe the response with respect to temperature. Results are found that G' and G'' improve over a range of temperatures for laminated glass with enlightening fracture behavior. Laminated glass also has a major influence on the damping factor, but it also depends on the laminated thickness and materials. Thermo-Mechanical Properties of laminated glass are more improved, without affecting the transferability of glass.
Suneel Donthamsetty, Penugonda Suresh Babu
Applied Mechanics and Materials, Volume 903, pp 107-115; https://doi.org/10.4028/www.scientific.net/amm.903.107

Abstract:
The mechanical properties like hardness, machinability and electrical conductivity of nanocomposites are analysed in current work. Inferable from its good castable property, A356 has been picked as matrix material and due to proximity with reference to density; nanosilicon carbide (SiC) is chosen as reinforcement material. A novel technique “Ultrasonic assisted cavitation” is followed for the synthesis of nancomposites for uniform dispersion and better properties. By keeping the size of reinforcement as 50 nm and varying the quantity from 0.1 to 0.5 by wt%; it is perceived that the hardness & drill thrust forces are increased and electrical conductivity is decreased when equated to pure alloy.
Mohit Mittal, Kanchan Phutela, Rajiv Chaudhary
Applied Mechanics and Materials, Volume 903, pp 117-124; https://doi.org/10.4028/www.scientific.net/amm.903.117

Abstract:
The primary objective of this research work is to explore the potential of walnut shell particles as a reinforcing agent in the thermoset matrix composite. Therefore, the number of composite samples was developed by varying the filler weight percentage (15%, 25%, 35%, and 45%) in an epoxy polymer. The composite samples were characterized in terms of mechanical properties by using tensile test, flexural or three-point bending test, Izod impact test, compression test, and Rockwell hardness test. Moreover, the effect of cellulosic filler content on the density and water absorptivity of epoxy-based composites was also investigated as per the ASTM standard. Agricultural waste in the form of walnut shell was characterized by the determination of grain size. The experimental results showed that the stiffness and hardness of epoxy thermoset were increased with the decrease in tensile and flexural strength after the addition of walnut shell fine particles. The composite of 35 wt% walnut filler exhibits a balanced combination of strength, stiffness, and toughness. It was found that the mechanical strength and modulus of filled composites were increased with the increase of filler content up to 35 wt%.
T.R. Mohan Kumar, P.V. Srihari, Sahas, M.S. Krupashankara
Applied Mechanics and Materials, Volume 903, pp 125-132; https://doi.org/10.4028/www.scientific.net/amm.903.125

Abstract:
Higher solar absorptance and lower thermal emittance are the key factors for solar collectors. The use of thin films that are having mechanically resistant coatings are common practice in industries. The primary motivation of carrying this research work is to lower thermal emittance and maximize solar absorptance on SS304 substrate material. W-Al2O3 composite coatings are developed using magnetron sputtering process by considering the process parameters. The experimental plan is achieved based on Taguchi L9 orthogonal under various levels for deposition parameters. The tungsten and alumina thin films deposited using a co-sputtering were characterized using 410 - solar instrument for measuring solar absorptance and ET 100 Emissometer for measuring thermal emittance. The optimization for process parameters on thermal emittance and absorptance were carried out. It was found that for deposition parameters of DC power 750W, RF power 1050W and Argon gas flow rate of 250 sccm, absorptance of 0.758 with thermal emittance of 0.061 is observed with deposition was carried out on SS304 substrates.
M.A. Manjunath, K. Naveen, Prakash Vinod, N. Balashanmugam, M.R. Shankar
Applied Mechanics and Materials, Volume 903, pp 11-16; https://doi.org/10.4028/www.scientific.net/amm.903.11

Abstract:
Polymethyl methacrylate (PMMA) is one among few known photo-polymeric resin useful in lithography for fabricating structures having better mechanical properties to meet the requirement in electronics and biomedical applications. This study explores the effect of Photo Initiator (PI) concentration and also curing time on strength and hardness of Polymethyl methacrylate (PMMA) obtained by UV photopolymerization of Methyl methacrylate (MMA) monomer. The UV LED light source operating at the wavelength of 364 nm is used with Benzoin Ethyl Ether (BEE) as photo initiator. The curing of PMMA resin is supported with peltier cooling device placed at the bottom of the UV light source. The characterisation study of UV photo cured PMMA is analysed through nano indenter (Agilent Technologies-G200). The current work investigates the influence of PI concentration and curing time in achieving maximum mechanical properties for UV photopolymerized PMMA.
Rajdeep Sardar, Prishat Bachhar, Sounak Majumder, Pranibesh Mandal
Applied Mechanics and Materials, Volume 903, pp 45-49; https://doi.org/10.4028/www.scientific.net/amm.903.45

Abstract:
Steels of various grades are ubiquitous in the modern economy. Cooling of steel during the production process is an important deciding factor about its final mechanical properties. This is dependent on the characteristics of the industrial setup and coolant used. Studies have been undertaken for analysis of their influence on the cooling rate, given specific parameters, for suitable industrial use and optimal production. The present study and experiments undertaken highlight the variation of the cooling rate of a Mild Steel Plate in a miniaturized Run Out Table (ROT), using air­water mist spray cooling under different initial plate temperatures and nozzle bank distances.
Lavanya Mekala, Sunita Ratnam Srirangam, Rajesh Kumar Borra, Subba Rao Thota
Applied Mechanics and Materials, Volume 903, pp 51-56; https://doi.org/10.4028/www.scientific.net/amm.903.51

Abstract:
In the present work, reactive DC magnetron sputtering method is used to deposit TiO2 thin films on glass substrates. The structural, surface morphology and optical studies of TiO2 thin films were discussed by varying the oxygen flow rates from 1 to 4 sccm. X-ray diffraction patterns of TiO2 thin films show amorphous nature. The surface morphological and elemental composition of TiO2 thin films were examined by field emission scanning electron microscopy and energy dispersive X-ray spectroscopy. From the optical absorption spectra, the shifting of absorption edge towards the longer wavelength leads to the decrement of optical bandgap from 3.48 to 3.19 eV with an increase of oxygen flow rate from 1 to 4 sccm.
S.M. Basha, N. Venkaiah, M.R. Shankar
Applied Mechanics and Materials, Volume 903, pp 57-63; https://doi.org/10.4028/www.scientific.net/amm.903.57

Abstract:
Fused Deposition Modelling (FDM) is one of the additive manufacturing processes which can produce prototypes or functional components without the use of fixtures, and the lead time required is reduced drastically compared to traditional machining processes. The application of the FDM process in the biomedical and casting industries is limited by its poor surface roughness which is most generally caused by the staircase effect and chordal error of the 3D model. Owing to the drawbacks of mechanical based finishing techniques, researchers have come up with a new technique known as Vapour Smoothing (VS). In this work, past literature of the VS process of FDM components is reported and it has been seen that the VS process is giving a promising improvement in surface roughness of FDM components.
Rajeev Kumar, Somnath Chattopadhyaya, Sanjeev Kumar, B.P. Agrawal
Applied Mechanics and Materials, Volume 903, pp 1-10; https://doi.org/10.4028/www.scientific.net/amm.903.1

Abstract:
This present investigation explore the microstructural properties of SDSS grade SAF2507 weldments produced by constant current GTAW and constant current GTAW with superimposed high frequency (HF) current. The macro, microstructural examination and mechanical characterization were performed. From the results, it was found that, the superimposition of high-frequency current on the welding current results in constriction of the arc during constant current GTAW with superimposed HF current. The superimposed HF current restricts the arc with for all intents and purposes a similar root and extended diameter. The weldment region unit considered the standard for mechanical and microstructural properties. The dominance of properties because of the association of inter pulse or HF current is described along with its related science concerned.
Nikhil Kumar, C.M. Ramesha, T. Anilkumar, P. Rajendra, B.R. Chandan
Applied Mechanics and Materials, Volume 903, pp 17-26; https://doi.org/10.4028/www.scientific.net/amm.903.17

Abstract:
The maraging steel are considered ultra-high strength due to its yield strength greater than 1400Mpa and are part of a set of advanced materials of interest for technological development, mainly for aeronautics and aerospace industry. For this purpose they should exhibit good toughness, fatigue resistance and acceptable weldability. Since the maraging steels are of higher cost we are intended to make the Medium Carbon Low Alloy Steel (MCLA) for the purpose of aeronautical and aerospace industry instead of Maraging steel as the cost of MCLA is comparatively less. An attempt is made to study on the basic properties of MCLA steels and Maraging steels by process modifications and comparing the results with that of the standard properties of the Maraging steel.
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