SDM College of Engineering and Technology

About: SDM College of Engineering and Technology is a based out in . It is known for research contribution in the topics: Diesel fuel & Combustion. The organization has 350 authors who have published 351 publications receiving 2399 citations.

Molecular Modeling and Adsorption Properties of Ordered Silica-Templated CMK Mesoporous Carbons

Abstract: Realistic molecular models of silica-templated CMK-1, CMK-3, and CMK-5 carbon materials have been developed by using carbon rods and carbon pipes that were obtained by adsorbing carbon in a model MCM-41 pore. The interactions between the carbon atoms with the silica matrix were described using the PN-Traz potential, and the interaction between the carbon atoms was calculated by the reactive empirical bond order (REBO) potential. Carbon rods and pipes with different thicknesses were obtained by changing the silica–carbon interaction strength, the temperature, and the chemical potential of carbon vapor adsorption. These equilibrium structures were further used to obtain the atomic models of CMK-1, CMK-3, and CMK-5 materials using the same symmetry as found in TEM pictures. These models are further refined and made more realistic by adding interconnections between the carbon rods and carbon pipes. We calculated the geometric pore size distribution of the different models of CMK-5 and found that the presence ...

Network approach to modeling and simulation of solar photovoltaic cell

Abstract: The cost and performance of PV plants goes with the module under consideration. However the electrical parameters of the modules vary from those provided by the manufacturer with the ageing of the module. Therefore, the behavior of the mathematical model of a PV module cannot match the real operating conditions. There are papers having proposed an improved model of a PV module that makes use only parameters provided by manufacturer's datasheets without requiring the use of any numerical methods. This paper aims to interpret by using one of the available models represented as Norton's equivalent circuit which is a simple and approximate model. Norton's circuit model representing the module helps knowing the behavior of solar module. The study and performance of this model is compared with that of the existing model using Matlab and the results are matching to the greater extent. The results obtained for both the models are validated by conducting series of experiments on a physical module. Thus, the work signifies yet another model for a PV module to evaluate the performance parameters

Parallelization of AES algorithm for disk encryption using CBC and ICBC modes

Abstract: Computers have become more prevalent and their interconnection via networks has increased the dependence of both organizations and individuals on the information stored and for communication using these systems. The end-user needs a faster, more capable system to keep up with this trend. At the same time security of data stored electronically is equally important. Disk encryption is a special case of data at rest protection when the storage media is a sector-addressable device. Advanced Encryption Standard (AES) is a symmetric key block cipher that gives maximum security because of longer key length, complex mathematical calculations, permutations and substitutions. Because of its complexity the execution time for the process of encryption is large. However with the advent of parallel computing and multicore processors there is a scope for parallelization of AES algorithm both at data and control level This paper proposes an optimized parallel architecture of AES algorithm for disk encryption, suitable to be implemented in a multicore environment. Cipher Block Chaining (CBC) mode of encryption is used for implementing the disk encryption. As it does not support a parallel architecture, Interleaved Cipher Block Chaining (ICBC) mode (proposed by the cryptographic community that allows parallel implementation) has been implemented. The AES algorithm in CBC and ICBC modes has been implemented in C language and is parallelized using OpenMP API 3.1 standard. The performance analysis is done using Intel VTune™ Amplifier XE 2013. The parallel design (ICBC) exhibits improved performance over the sequential approach (CBC) and a speed up of approximately 1.7 is achieved.

Impact of process induced residual stresses on interlaminar fracture toughness in carbon epoxy composites

Abstract: Residual stresses are induced in composite laminates during the process of manufacturing due to thermal mismatch between composite constituents during curing. Processes induced residual stresses effects the safety of structural components and can play a main role in matrix cracking, crack initiation and propagation. The objective of this research is to study the influence induced residual stresses on interlaminar fracture toughness (GI) of Carbon/Epoxy laminates. Initially laminates were cured under room temperature followed by post curing at various temperatures using a chosen cure cycle. Slitting method was employed to determine the residual stress distribution in post cured laminates and its effects on GI was estimated using Double Cantilever beam (DCB) test. The results show a gradual increase in GI with increase in compressive residual stresses in composite laminate. Further, the fracture surfaces of laminates were carefully studied using scanning electron microscope to know the interfacial adhesion of matrix and fiber.