Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Mahmoud Ansari"'
Publikováno v:
آداب الكوفة, Vol 1, Iss 42 (2021)
أهم ما يميز المذهب الشيعي عن سائر المذاهب الإسلامية هو الإعتقاد بالإمامة، وقد انعكس هذا المفهوم في أشعار الشعراء المعاصرين بشكل واسع، وب
Externí odkaz:
https://doaj.org/article/dfc9ad9c078041f7be6c8d51b41e3da5
Autor:
Antonios A. Doufas, Mahmoud Ansari, Savvas G. Hatzikiriakos, Tanja Tomkovic, Maziar Derakhshandeh
Publikováno v:
Polymer Testing. 67:266-274
The effects of molecular characteristics on the rheology and melt fracture of several linear and branched low-density polyethylene (LLDPE and LDPE) resins in capillary extrusion were studied as functions of molecular weight, polydispersity and the le
Publikováno v:
Rheologica Acta. 57:83-94
The thermo-rheological characteristics of a fumed silica lubricating grease in linear and nonlinear oscillatory experiments have been investigated. The material rheological behavior represents a soft solid being thermo-rheologically complex. There is
Autor:
Edward R. Grant, Mahmoud Ansari, Flavien Fremy, Dimitrios Vavlekas, Jessica L. McCoy, Luke Melo, Savvas G. Hatzikiriakos
Publikováno v:
Polymer Testing. 61:65-73
Polytetrafluoroethylene (PTFE) flat profiles were extruded using slit dies, which promoted orientation of fibrils in two directions (2-D). Uniaxial tensile experiments were performed on the collected extrudates using the Sentmanat Extensional Rheomet
Publikováno v:
Polymer Testing. 60:68-77
In the present work, we use the viscoelastic moduli of a large number of industrially available polyethylenes in order to evaluate/test some of the previously proposed correlations between levels of long chain branching and polydispersity with the rh
Autor:
Mahmoud Ansari, Andreas Neunhäuserer, Leonhard Perko, Evan Mitsoulis, Savvas G. Hatzikiriakos, Markus Battisti, Walter Friesenbichler
Publikováno v:
Plastics, Rubber and Composites. 46:110-118
This study is concerned with the flow behaviour of a rubber compound in capillary and injection moulding dies in the temperature range of 80–120°C. The injection moulding die designs had a tapered ...
Publikováno v:
Journal of Tribology. 142
The rheological properties of lubricating greases are the governing properties for performance assessment in lubrication applications. These properties can be determined under both controlled stress and strain rheometry. Moreover, studying the effect
Autor:
Jessica L. McCoy, Han Hao, Dimitrios Vavlekas, Mahmoud Ansari, Flavien Fremy, Savvas G. Hatzikiriakos
Publikováno v:
Polymer Testing. 55:143-151
A polytetrafluoroethylene (PTFE) paste was extruded using a capillary rheometer at various temperatures through dies of different reduction ratios. Uniaxial tensile experiments have been performed on the collected extrudates using the Sentmanat Exten
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics. 236:73-82
The extrudate swell of an industrial grade high molecular weight high-density polyethylene (HDPE) in capillary dies is studied using the integral K-BKZ constitutive model. The non-linear viscoelastic flow properties of the polymer resin are studied f
Autor:
Vinod Kumar Konaganti, Mahmoud Ansari, Evan Mitsoulis, Ehsan Behzadfar, Savvas G. Hatzikiriakos
Publikováno v:
International Polymer Processing. 31:262-272
Extrudate swell of industrial-grade high-molecular mass high-density polyethylenes (HDPEs) in flat/slit dies is studied using both experiments and simulations. The experimental set-up consists of an optical micrometer to measure the extrudate dimensi