pavement permanent deformations due to lack of shear strength in mixture are a major reason of rutting. any simple test to determine mixtures resistance to permanent deformation isn’t distinguished in the 1st level of superpave mix design method and prevalent methods for evaluating mixture rut resistance are expensive and time-consuming. two aggregate types, gradations, asphalt cements and fill...

In this paper, the calculation method of dynamic stress concentration around piezoelectric ceramics containing regular n-sided holes under action electroelastic coupling wave was studied, and it applied to promising barium calcium zirconate titanate material. First, governing equations were decomposed by using auxiliary function method, solution forms elastic field electric obtained expansion m...

the pathophysiology of primary benign exertional headache (eh) is not still clearly defined. some researchers have suggested an impaired vascular response as the etiology of this disorder. in this study we investigated whether there are any differences in blood pressure (bp) and heart rate (hr) of the subjects in course of the static and dynamic exercises and the treadmill stress test between t...

Dr. Hani Aziz Ameen* Received on :17/8/2009 Accepted on:7/1/2010 Abstract Shaft misalignment is considered as one of the common repeated problems in most rotating machineries , which leads to generate vibrations and extra dynamic loads on transmitting gears teeth, also leads to nonuniformity in distribution of applied load along the meshing tooth face by being concentrated on one side of tooth ...

The present paper deals with the mixed mode fracture analysis of a weakened orthotropic half-plane with multiple cracks propagation. The orthotropic half-plane contains Volterra type glide and climb edge dislocations. It is assumed that the medium is under in-plane loading conditions. The distributed dislocation technique is used to obtain integral equations for the dynamic problem of multiple ...