Loading...
Search for:
sharbatdar--meghdad
0.034 seconds
Cathodic Disbonding in Steel Structures and the Effect of Paint Type and Environment
,
M.Sc. Thesis
Sharif University of Technology
;
Ghorbani, Mohammad
(Supervisor)
Abstract
Although using cathodic protection in addition to coating with paint will extend the life of pipelines drastically, it can also accelerate disbondment of coating at coating defects. In this research four usual pipeline coating systems have been examined from applicational aspects and the best coating system among them has been introduced. The four coating systems were consisted of: epoxy coal tar 212 with epoxy 155 primer, solvent free polyamine epoxy 474HG without primer, glasscote 440 witout primer and glasscote 440 with epoxy 155 primer. According to ASTM G8, cathodic disbondment test was accomplished for eight samples simultaneously. During the tests cathodic protection current and...
Probabilistic CFD analysis on the flow field and performance of the FDA centrifugal blood pump
, Article Applied Mathematical Modelling ; Volume 109 , 2022 , Pages 555-577 ; 0307904X (ISSN) ; Karimi, M. S ; Raisee, M ; Sharbatdar, M ; Sharif University of Technology
Elsevier Inc
2022
Abstract
The present study is set out to systematically investigate the combined impact of operational, geometrical, and model uncertainties on the hemodynamics and performance characteristics in the U.S. Food and Drug Administration (FDA) benchmark centrifugal blood pump. Non-intrusive Polynomial Chaos Expansion (NIPCE) has been utilized to propagate the uncertainty of 12 random input variables in the flow field and the performance characteristics of the blood pump at three working conditions. The global sensitivity of the Quantities of Interest (QoI) to the uncertain input parameters was measured through the Sobol’ indices. The Multiple Reference Frames (MRF) approach and the SST k−ω turbulence...
An experimental investigation into the mechanical performance and microstructure of cementitious mortars containing recycled waste materials subjected to various environments
, Article Journal of Building Engineering ; Volume 61 , 2022 ; 23527102 (ISSN) ; Gholhaki, M ; Sharbatdar, M ; Pachideh, G ; Sharif University of Technology
Elsevier Ltd
2022
Abstract
This paper deals with an experimental investigation into the mechanical performance and microstructure characteristics of the cementitious mortars containing recycled waste materials subjected to acidic, neutral and alkaline environments. The recycled waste materials include glass, eggshell, iron and rubber powder in various amounts, namely 7, 14 and 21% by volume, as the replacement for ordinary Portland cement (OPC). In this respect, to examine the mechanical performance of the specimens, the compressive, tensile and bending strength tests as well as water absorption test were carried out at the ages of 7, 28 and 90 days. Moreover, to study the microstructure of the specimens, the scanning...