فهرست مقالات extruder

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  1 - Feed Stock Fabrication of AISI 4605 Steel for Fused Deposition Modeling and Sintering and Designing of Its Extruder Mechanism
  Amir Rahimi Jamal Zamani
  10.30486/admt.2023.1961907.1358
  Fused Deposition Modeling and Sintering (FDMS) is one of the indirect and emerging processes of Additive Manufacturing (AM) for the production of metal parts, which is a combination of AM process and Metal Injection Molding (MIM). This study laboratory made a raw materi چکیده کامل

  Fused Deposition Modeling and Sintering (FDMS) is one of the indirect and emerging processes of Additive Manufacturing (AM) for the production of metal parts, which is a combination of AM process and Metal Injection Molding (MIM). This study laboratory made a raw material (Feed Stock) composing of high percentage of metal powder (particle in nano-scale) and polymeric materials; and then, designed an extruder to simulate melting and extruding process by Computational Fluid Dynamic (CFD). The different variables such as the nozzle diameter (D) of 1, 2, 3 and 4 mm and compression zone length (L2) of 100, 200 and 300 mm were simulated to investigate their impacts on flow rate and required torque to rotate screw. The findings showed that components of feed stock for high physical and mechanical properties of FDMS should account for 55 wt.% of paraffin wax, 25 wt.% of polypropylene, 15 wt.% of carnauba wax and 5 wt.% of stearic acid with optimum percentage of metal powder of 90 wt.%. Also, the optimum value of extruder diameter and compression zone length were 2mm and 200 mm, respectively. پرونده مقاله
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  2 - Effect of Processing of Sorghum Stover Based Diets on Performance, Values of Haematological and Biochemical Parameters and Immune Response in Growing Nellore Lamb
  د. ناگالاکشمی ک. دهانالاکشمی
  A complete diet (Total Mixed ration) with sorghum stover (40%) as sole roughage source was prepared and offered to animals under two forms: as mash or as expanded-extruded pellets (EEP). These two complete diets were compared with a conventional diet (ad libitum chopped چکیده کامل

  A complete diet (Total Mixed ration) with sorghum stover (40%) as sole roughage source was prepared and offered to animals under two forms: as mash or as expanded-extruded pellets (EEP). These two complete diets were compared with a conventional diet (ad libitum chopped sorghum stover fed separately with concentrate mixture to meet 80% of protein requirements). These three diets were randomly allotted to 30 male lambs for a period of 150 days. The lambs on conventional, mash and pelleted diet grew with an average daily gain of 62.5g, 78.5g and 101.3g, respectively, with superiority (P<0.01) of EEP diet in relation to the others. The lambs fed complete diets were more efficient in utilizing the dry matter (DM) than those fed conventional diet despite lower DMI. The haematological (total erythrocyte and leucocyte counts, and percentage of neutrophil and lymphocyte) and serum biochemical constituents (total protein, albumin, globulin and urea nitrogen concentration) at 0, 75 and 150 d of trial were not affected by diets, except haemoglobin concentration which was significantly higher in lambs fed EEP diet (P<0.001). The lipid peroxidase activity was lower (P<0.05) and the RBC catalase activity (P<0.01) was higher in both groups of lambs fed with complete diet. The humoral immune response against Brucella abortus was higher in lambs fed with EEP diet compared to the lambs fed with mash or conventional diets. The total Ig, IgM or IgG titres against 20% chicken red blood cells were higher in lambs fed complete diets and were not affected by expander extruder processing. The cell mediated immune response of lambs assessed as in vitro lymphocyte assay at 150 d of feeding was higher (P<0.05) in EEP diet followed by those in mash complete diet and lastly by those fed conventional diet. پرونده مقاله
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  3 - Torsion of cylindrically poroelasic circular shaft with radial inhomogeneity .some exact solutions for extruder
  mohammad farid khansanami Faranak Khansanami
  Torsion of elastic and poroelastic circular shaft of radially inhomogeneous, cylindrically orthotropic materials is studied with emphasis on the end effects example for extruder. To examine the conjecture of Saint-Venant’s torsion, we consider torsion of circular s چکیده کامل

  Torsion of elastic and poroelastic circular shaft of radially inhomogeneous, cylindrically orthotropic materials is studied with emphasis on the end effects example for extruder. To examine the conjecture of Saint-Venant’s torsion, we consider torsion of circular shaft with one end fixed and the other end free on which tractions that results in a pure torque are prescribed arbitrarily over the free end surface. Exact solutions that satisfy the prescribed boundary conditions point by point over the entire boundary surfaces are derived in a unified manner for cylindrically orthotropic shafts with or without radial inhomogeneity and for their coun- terparts of Saint-Venant’s torsion. Stress diffusion due to the end effect is examined in the light of the exact solutions.The present study enables us to assess Saint-Venant’s principle as applied to anisotropic, non-homogeneous poroelastic bodies in general and to evaluate the stress diffusion in torsion of radially inhomogeneous, cylindrically orthotropic cylinders in particular. The following conclusions can be drawn from the analysis. پرونده مقاله
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  4 - Torsion of cylindrically poroelasic circular shaft with radial inhomogeneity .some exact solutions for extruder
  محمد فرید خان سمنی فرانک خان سمنی
  Torsion of elastic and poroelastic circular shaft of radially inhomogeneous, cylindrically orthotropic materials is studied with emphasis on the end effects example for extruder. To examine the conjecture of Saint-Venant’s torsion, we consider torsion of circular s چکیده کامل

  Torsion of elastic and poroelastic circular shaft of radially inhomogeneous, cylindrically orthotropic materials is studied with emphasis on the end effects example for extruder. To examine the conjecture of Saint-Venant’s torsion, we consider torsion of circular shaft with one end fixed and the other end free on which tractions that results in a pure torque are prescribed arbitrarily over the free end surface. Exact solutions that satisfy the prescribed boundary conditions point by point over the entire boundary surfaces are derived in a unified manner for cylindrically orthotropic shafts with or without radial inhomogeneity and for their coun- terparts of Saint-Venant’s torsion. Stress diffusion due to the end effect is examined in the light of the exact solutions.The present study enables us to assess Saint-Venant’s principle as applied to anisotropic, non-homogeneous poroelastic bodies in general and to evaluate the stress diffusion in torsion of radially inhomogeneous, cylindrically orthotropic cylinders in particular. The following conclusions can be drawn from the analysis پرونده مقاله