Research Paper Thermodynamics and Cumbustion
Performance evaluation of waste fried vegetable oil in a medium grade low heat rejection diesel engine

M. V. S. Murali Krishna; R. P. Chowdary; T. Kishen Kumar Reddy; P. V. K. Murthy

Volume 4, Issue 2 , June 2015, Pages 101-102

  Investigations were carried out to evaluate the performance of direct injection diesel engine with medium grade low heat rejection (LHR) combustion chamber and 3 mm air gap insulated piston, 3 mm air gap insulated liner, and ceramic coated cylinder head [ceramic coating with the thickness of 500 µ ...  Read More

Research Paper Fracture Mechanics
Prediction of forming limit curves (FLD, MSFLD and FLSD) and necking time for SS304L sheet using finite element method and ductile fracture criteria

Kamal Kolasangiani; Mahmoud Shariati; Khalil Farhangdoost

Volume 4, Issue 2 , June 2015, Pages 121-132

  Forming limit curves are used as a parameter in finite element analysis to control the material's level of formability. In this research, forming limit diagram (FLD) of SS304L sheet was obtained by ABAQUSfinite element software. In practice, the experimental determination of a forming limit curve is ...  Read More

Research Paper Heat and Mass Transfer
Effects of heat generation and thermal radiation on steady MHD flow near a stagnation point on a linear stretching sheet in porous medium and presence of variable thermal conductivity and mass transfer

S. Mohammed Ibrahim; K. Suneetha

Volume 4, Issue 2 , June 2015, Pages 133-144

  The present paper was aimed to study the effects of variable thermal conductivity and heat generation on the flow of a viscous incompressible electrically conducting fluid in the presence of a uniform transverse magnetic field, thermal radiation, porous medium, mass transfer, and variable free stream ...  Read More

Research Paper Welding
Numerical simulation of laser beam welding of Ti6Al4V sheet

M. Azizpour; M. Ghoreishi; A. Khorram

Volume 4, Issue 2 , June 2015, Pages 145-154

  This paper was aimed to report the 3D finite element analysis simulation of laser welding process of Ti6Al4V 1.7 mm sheets in butt joint in order to predict the temperature distribution, hardness, and weld geometry. The butt-joint welds were made using CO2 laser with the maximum power of 2.2 kW in the ...  Read More

Research Paper Turbulance
Derivation of turbulent energy of fiber suspensions

S. F. Ahmed; M. S. A. Sarker Sarker

Volume 4, Issue 2 , June 2015, Pages 155-163

  The energy equation for turbulent flow of fiber suspensions was derived in terms of second order correlation tensors. Fiber motion of turbulent energy including the correlation between pressure fluctuations and velocity fluctuations was discussed at two points of flow field, at which the correlation ...  Read More

Research Paper Composite Materials
Elastoplastic torsion of hollow FGM circular shaft

Y. Bayat; H. Ekhteraei Toussi

Volume 4, Issue 2 , June 2015, Pages 165-180

  In many cases, a torsional shaft may be a thick-walled radially inhomogeneous cylindrical object. The hollow shafts made of functionally graded materials (FGMs) are such kind of compositions which were studied in this paper. Cylindrical FG shafts are composed of ceramic and metallic parts with power ...  Read More

Research Paper Manufacturing Processes
Investigating electrochemical drilling (ECD) using statistical and soft computing techniques

Mehdi Tajdari; Saeed Zare Chavoshi

Volume 4, Issue 2 , June 2015, Pages 181-191

  In the present study, five modeling approaches of RA, MLP, MNN, GFF, and CANFIS were applied so as to estimate the radial overcut values in electrochemical drilling process. For these models, four input variables, namely electrolyte concentration, voltage, initial machining gap, and tool feed rate, were ...  Read More