The forming limit is an important failure criterion for polycrystalline sheet metals when approving the process. Recent developments in strain measurement technology, e.g., digital image correlation (DIC), enable evolution to be captured continuously and accurately. This new technology would improve measurements if onset of necking detection method was developed accordingly. paper proposes a ba...

A NURBS-based isogeometric finite element formulation is developed and adopted to the free vibration analysis of finite square and skew laminated plates. Variable stiffness plies are assumed due to implementation of curvilinear fiberreinforcements. It is assumed due to employment of tow placement technology, in each ply of variable stiffness composite laminated plate the fiber reinforceme...

A simple, efficient, and high yielding one-pot protocol has been developed for the synthesis of 4H-benzo[b]pyrans scaffolds installing a three-component tandem Knoevenagel-cyclocondensation reaction of an aldehyde, malononitrile and dimedone using guanidinium chloride as polyfunctional organocatalyst under solvent-free conditions in high to excellent yields. Various aromatic aldehydes were util...

The main focus of this research paper is to develop a realistic mathematical framework accurately characterize the performance harmonic identification system. This incorporates essential factors that affect system such as, radiation pattern and polarization reader transponder antennas, angle incidence reflection, conversion efficiency non-linear element, besides environmental effects which are ...

classic political sociology dogmatically considers women politically more conservative than men and accordingly, women’s models of political behaviors are expressed based on their inherent tendencies towards right-wing conservative parties. but new research indicates that in developed countries during 1980’s, women gradually distanced from traditional conservatism and joint democratic groups. i...