In this study, failure analysis of a crankshaft was carried out. The crankshaft made of nodular graphite cast iron was used in a gasoline engine. The cracks propagated axially on surface of the 4 th pin journal. Microscopic observation was…

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ABSTRACTIn this paper the characterization of certain families of the Pk   sets for k=3(4) are given, and it is shown that some of them can not be extended.  Key Words: Diophantine Equation, Congruence, Legendre Symbol

ABSTRACTIn this study, free vibration of shear deformable beams was investigated. Discrete singular convolution (DSC) method is used for free vibration problem of numerical solution of shear deformable beams. Numerical results are presented and compared with that available in the…

The material under study comprises macrofungi specimens that were collected from different localities in Bozyazı (Mersin) between 2005 and 2007. As the result of field and laboratory studies, 96 taxa belong to 11 of Ascomycota, and 85 taxa of 12…

A simple and efficient synthesis of  2-(cyclohexylamino)- 6,7-dihydro-3-aryl benzofuran-4(5H)-ones derivatives was achieved  via a one-pot three –component reaction of  cyclohexylisocyanide, aldehydes, and dimedone or 1,3-cyclohexanedione in DMF for 2 hr with good yields.  Keywords: Cyclohexyl isocyanide, dimedone, 1,3- cyclohexanedione, one-pot…

This paper is devoted to investigating a class of linear singular integral equations with a negative index on a closed, simple and smooth curve. In this paper, we propose the quadrature method for the approximate solution of the linear singular…

This paper presents a finite element analysis on 4 types of precast connections which are pinned, rigid, semi rigid and a new proposed connection. The stiffness of the new connection is obtained from the slope of the total load versus…

In this study a finite element analysis of elastoplastic contact-impact has been carried out. Newmark, Wilson-q, Central Difference and Houbolt Methods have been used as direct integration methods. Impact analysis includes elastoplastic and large deformation based upon updated Lagrangian including…

This paper is concerned with a novel wavelet-based damage detection method for beam-like structures. The method employs the orthogonal wavelet transform (OWT), and is based on extracting an approximation function from the damaged mode of structure. This approximation function is…