International Journal of Mechanical Engineering and Applications

Volume 5, Issue 4, August 2017

  • Numerical Investigation of Short Blades Effect on the Performance of a Centrifugal Pump

    Sami Abdelfatah Abd Elkgany El-Shaikh, Mohamed Attia Abdellatif, Abdullah Hussein Ibrahim Aboelnil

    Issue: Volume 5, Issue 4, August 2017
    Pages: 186-193
    Received: 7 May 2017
    Accepted: 15 May 2017
    Published: 5 July 2017
    Downloads:
    Views:
    Abstract: Improvement performance of centrifugal pumps is critical to reduce the consumption of electrical energy. One to improve the performance is to break down the circulation near the impeller exit. This can be achieved through the use of shorted blades. Effect of different sizes of shorted blade on pump performance is studied theoretically in this resea... Show More
  • Leakage-Resilient Certificateless Short Signature Scheme

    Chen Xiaokui

    Issue: Volume 5, Issue 4, August 2017
    Pages: 194-202
    Received: 22 March 2017
    Accepted: 10 May 2017
    Published: 6 July 2017
    Downloads:
    Views:
    Abstract: For a certificateless short signature scheme to be applied in practical applications, it should without various leakage attacks. In this paper, we present a new leakage-resilient certificateless short signature scheme whose security is based on the classical decisional Diffie-Hellman (DDH) assumption. Our scheme is leakage-resilient signature schem... Show More
  • Researches on Stress Concentration and Fatigue Damage for Ferromagnetic Specimen by Permeability Testing Technology

    Ren Shangkun, Ren Xianzhi, Yang Meifang

    Issue: Volume 5, Issue 4, August 2017
    Pages: 203-207
    Received: 7 May 2017
    Accepted: 22 May 2017
    Published: 10 July 2017
    Downloads:
    Views:
    Abstract: The permeability testing technology are new testing and evaluating method, which based on the electromagnetic induction principle, can realize the test and evaluate high sensitively of stress concentration and fatigue damage for ferromagnetic specimen. Taking Q235 and 45 steel for examples, the relationships of the detection signal and the tensile ... Show More
  • Finite Element Analysis of EA 113 Gasoline Engine Connecting Rod

    Jing Zhang, Zhiyuan Qiu, Yan Zhang

    Issue: Volume 5, Issue 4, August 2017
    Pages: 208-213
    Received: 19 July 2017
    Published: 19 July 2017
    Downloads:
    Views:
    Abstract: For the Santana EA 113 gasoline engine connecting rod, the motion law of connecting rod and stresses in movement were analyzed using the theory knowledge of kinematics and dynamics. Based on the finite element method, the three-dimensional model of four-cylinder four-stroke gasoline engine connecting rod was established and then the stiffness and s... Show More
  • A New Approach of Gas Turbine Component Matching for Electrical Power Generation

    Munzer S. Y. Ebaid, Qusai Z. Al-Hamdan

    Issue: Volume 5, Issue 4, August 2017
    Pages: 214-222
    Received: 27 February 2017
    Accepted: 7 March 2017
    Published: 4 August 2017
    Downloads:
    Views:
    Abstract: Gas turbines are often required to operate at different power levels and under varying environmental conditions. But by the nature of the thermodynamic processes in the engine, it is not possible to obtain the same level of efficiency within the entire range of operation. Therefore, depending on the particular application, for example for power gen... Show More
  • A Model for Design Optimization of Electrochemical Mechanical Polishing Polish Pad

    Bian Yanfei, Wang Zhenxuan, Cai Meng, Wang Ruofu, Tian Jingqun

    Issue: Volume 5, Issue 4, August 2017
    Pages: 223-227
    Received: 11 July 2017
    Accepted: 19 July 2017
    Published: 11 August 2017
    Downloads:
    Views:
    Abstract: The polishing pad plays a vital role in achieving the desired removal rate and level of surface planarity during the electrochemical mechanical planarization (ECMP) process. Material removal rate (MRR) and within wafer non-uniformity (WIWNU) are two important factors in determining the polishing performance. In this work, a theoretical model for pr... Show More
  • Economic Viability of Compressor Washing Methods for Maximum Power Output

    Enyia James Diwaa, Archibong Eso Archibongb, Dodeye Ina Igbongc, Ukpabio E. Eyod

    Issue: Volume 5, Issue 4, August 2017
    Pages: 228-238
    Received: 22 September 2016
    Accepted: 21 January 2017
    Published: 21 August 2017
    Downloads:
    Views:
    Abstract: It is no longer news that gas turbines deteriorates after some period in operation, and if the deterioration effect is not taken into consideration, the gas turbine operator or owner will run into huge economic loss. Availability and reliability have been very important tools to every gas turbine owner, and there are various methods by which these ... Show More