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Mechanisms and robots are essential components of any mechanical system. They are used for transmission of force and torque and also for performing a precise motion and work. Dynamic problems are interestingly based on certain essential principles and concepts which are extended to be applicable on a wide range of fields. One of the precious aspects of dynamic studies is experiencing logic on the...
Partial volume averaging is one of the most prevalent artifacts in computed tomography (CT) that threatens the diagnostic interpretation by giving the misleading density of a voxel. This paper proposes a novel approach for reducing of partial volume averaging artifact in CT called dual scan method. The idea behind this work is to acquire two sinograms of the object while detector is slightly shifted...
Variable resolution x-ray (VRX) CT is a newly introduced CT scanner that provides increased spatial resolution. Compton scatter poses a significant threat to VRX CT, bringing cupping and streak artifacts. Appropriate compensation of scattered radiation in VRX CT needs accurate estimation of Compton scattering. The aim of this study is to assess the magnitude and spatial distribution of scattered radiation...
The prime objective of this research was to improve the mechanical properties of C300 maraging steels originally cast in the vaccum induction melting (VIM) and AIM furnaces by application of vaccum arc remelting (VAR) process. For this purpose two sets of C300 maraging steel with different amounts of Ti were cast in two different types of furnaces. Three bars with 1, 1.5 and 2wt% of Ti were produced...
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