International Journal of Mechanical Engineering and Applications

Volume 6, Issue 3, June 2018

  • Particle Focusing in Microchannel with Multi-Parallel Channels or Porous Orifice

    Hiroshige Kumamaru, Hirofumi Sugami, Masaki Nakahira, Naohisa Takagaki

    Issue: Volume 6, Issue 3, June 2018
    Pages: 46-54
    Received: 22 April 2018
    Accepted: 7 May 2018
    Published: 28 May 2018
    Abstract: The sheathless particle focusing in a microchannel installing one set of multi-parallel channels or one porous orifice is proposed in this study. Numerical calculations have been carried out by the Lagrange two-phase model (i.e. the particle tracking model) in PHOENICS software for the microchannel including the porous orifice, in simulating both t... Show More
  • Modification and Manufacturing of Cereal Crop Harvesting Machine

    Seleshi Tilahun Tiruneh

    Issue: Volume 6, Issue 3, June 2018
    Pages: 55-58
    Received: 19 April 2018
    Accepted: 16 May 2018
    Published: 11 June 2018
    Abstract: Today the development of agricultural sector is increasing from year to year. The rice, wheat and other cereals are the focus of many farmers in Ethiopia. But to harvest on time the cereals, intensive human power is needed. Most of the time students starting from elementary level up to university level participate on harvesting of cereals due to un... Show More
  • Research and Development of Economical CNC Software for 2D Lean Friction Stir Welding Machine

    Diop Sokhna Anta Balla, Zhou Hu, Xu Chi

    Issue: Volume 6, Issue 3, June 2018
    Pages: 59-63
    Received: 19 June 2018
    Published: 20 June 2018
    Abstract: This project is developing a two-dimensional friction stir machine, relatively low cost to achieve four axis friction stir welding equipment with real-time servo control, where the corresponding trajectory planning function in cam is relatively independent by making a full use of Galil motion controller has a strong multi axis linkage control capab... Show More
  • Analytical Solution of Stiffness for a Corner-Fillet Leaf-Spring Type Flexure Hinge with a Long Fatigue Life

    Li Rui-qi, Wu Bai-sheng, Chen Xin, Yang Zhi-jun

    Issue: Volume 6, Issue 3, June 2018
    Pages: 64-72
    Received: 17 May 2018
    Accepted: 5 June 2018
    Published: 29 June 2018
    Abstract: Flexure hinges as the displacement guiding and amplifying mechanism or sensing component are widely used for micro-actuators and sensors. However, the existing flexure hinges, leaf-spring or notch type, cause serious stress concentration which severely weaken the fatigue life of compliance mechanism. Therefore, developing long fatigue life flexure ... Show More
  • The Effect of the Fluid Film Variable Viscosity on the Hydrostatic Thrust Spherical Bearing Performance in the Presence of Centripetal Inertia and Surface Roughness Part 2, Recessed Fitted Bearing

    Ahmad Waguih Yacout Elescandarany

    Issue: Volume 6, Issue 3, June 2018
    Pages: 73-90
    Received: 12 July 2018
    Accepted: 14 August 2018
    Published: 11 September 2018
    Abstract: The study deals with the fluid viscosity variation, the centripetal inertia and the bearing surface roughness affecting the externally pressurized thrust spherical bearing performance where the partial differential equation of the temperature gradient previously derived from the fluid governing equations, is integrated and applied to this type of b... Show More