International Journal of Mechanical Engineering and Applications

Volume 5, Issue 3, June 2017

  • Suppression of Oscillation of a Certain Two-Mass System with the Help of the Generalized Gauss Principle

    Kamilla Maratovna Fazlyeva, Timofei Sergeevich Shugailo, Mikhail Petrovich Yushkov

    Issue: Volume 5, Issue 3, June 2017
    Pages: 129-135
    Received: May 10, 2017
    Accepted:
    Published: May 10, 2017
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    Abstract: The paper studies the suppression of oscillation of a certain two-mass system when it is transferred from the initial state of rest to the given state of rest during a time interval prescribed. The problem is solved by the two methods: the Pontryagin maximum principle (first method) and the generalized Gauss principle (second method). Computational... Show More
  • Mathematical Modeling for Material Removal and Optimization of Ultrasonic Drilling of Polycarbonate and Acrylic Glass for Surface Roughness by GRA Approach

    Kanwal Jeet Singh, Inderpreet Singh Ahuja, Jatinder Kapoor

    Issue: Volume 5, Issue 3, June 2017
    Pages: 136-154
    Received: Mar. 18, 2017
    Accepted: Apr. 06, 2017
    Published: May 17, 2017
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    Abstract: Polycarbonate bullet proof and acrylic heat resistant glasses are used as the functional material in many industrial application. In automobile industries, banks and cabins, polycarbonate bullet proof glass has been used for security purpose. Similarly, acrylic heat resistant glass is used in furnace, microwaves, space craft and airplane applicatio... Show More
  • Optimization of Molding Sand Composition for Casting Al Alloy

    Sumaiya Shahria, Md. Tariquzzaman, Md. Habibur Rahman, Md. Al Amin, Md. Abdur Rahman

    Issue: Volume 5, Issue 3, June 2017
    Pages: 155-161
    Received: Mar. 06, 2017
    Accepted: Apr. 05, 2017
    Published: May 17, 2017
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    Abstract: In the aluminum casting industry, the foundry manufacturers find the quality of the sand mold as important fact to achieve high quality aluminum castings. The aim of this research is to reduce aluminum casting defects by optimizing proportion of water and bentonite added to a recycled sand mold. Aluminum 356 alloy was preferred for this research ba... Show More
  • Non-newtonian Rabinowitsch Fluid Effects on the Lubrication Performances of Sine Film Thrust Bearings

    Jaw-Ren Lin, Hsiu-Lu Chiang, Yu-Kang Chiu

    Issue: Volume 5, Issue 3, June 2017
    Pages: 162-167
    Received: May 19, 2017
    Accepted:
    Published: May 20, 2017
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    Abstract: Thrust bearings are generally developed to sustain axial load generated from rotating machinery. Predicting lubrication performances of thrust bearings plays an important role in engineering applications. Taking into account the effects of non-Newtonian rheology, the lubrication performances for a sine film thrust bearing are investigated in the pr... Show More
  • Design of Multi Hole Machining Equipment for Flange Parts Based on CAD/CAM

    Shuangxi Jing, Xiaoyu Yang, Chenxu Luo, Jinle Yuan, Zhipeng Luo

    Issue: Volume 5, Issue 3, June 2017
    Pages: 168-174
    Received: Apr. 01, 2017
    Accepted: Apr. 13, 2017
    Published: May 23, 2017
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    Abstract: According to the situation of multi hole machining with linear circular flange flange parts, a device is analyzed and designed, which can process multiple flange holes at the same time, and the design of the device including fixture design and multi spindle box design. the three - dimensional modeling and analysis software is used, make a study on ... Show More
  • Developing of Heating and Cooling Universal System Sourced by New Type of Heat Pump and Method for Its Design

    Zohrab Melikyan, Taron Movsesyan

    Issue: Volume 5, Issue 3, June 2017
    Pages: 175-181
    Received: Mar. 24, 2017
    Accepted: Apr. 22, 2017
    Published: Jun. 01, 2017
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    Abstract: At present closed and open loop geothermal heat pumps are in use. Nevertheless, they have disadvantages, which seriously limit their wide use. First disadvantage is the shortage of rather large free areas for laying underground heat exchangers in form of rather long pipelines. This problem arises especially in towns and large cities. Second disadva... Show More
  • Preliminary Investigation on Production of Biogas from Domestic Sewage

    Kwasi-Effah C. Collins, Ebunilo O. Patrick, Ogbeide O. Osarobo

    Issue: Volume 5, Issue 3, June 2017
    Pages: 182-185
    Received: Feb. 03, 2017
    Accepted: May 05, 2017
    Published: Jun. 27, 2017
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    Abstract: A domestic biogas digester was used to test the concept of controlled anaerobic digestion. A mixture of 20kg cow dong, 4kg of water hyacinth, and 8 kg of domestic waste, was used to run the test. Result showed that a reasonable amount of biogas is generated on the second day of the test period. However, during the 5th and 7th day of the 10 days tes... Show More