Engineering Physics

Archive

Volume 1, Issue 1, June 2017

  • Introduction to Natural Dye Sensitized Solar Cells

    Askari Mohammad Bagher

    Issue: Volume 1, Issue 1, June 2017
    Pages: 1-7
    Received: Nov. 03, 2016
    Accepted: Nov. 17, 2016
    Published: Jan. 07, 2017
    DOI: 10.11648/j.ep.20170101.11
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    Abstract: Dye Sensitized Solar Cells (DSSC) is broadly regarded as the more promising third generation photovoltaic (solar) technology. These cells are the closest mankind has come to replicating nature’s photosynthesis. Paying homage to its inventor Professor Michael Gräetzel we call it GCell. With regard to advantages A dye-sensitized solar cell including ... Show More
  • Damage Estimation and Stress Singularity Study Using a Coherent Gradient Sensing Method

    Joseph Scura, Rick Woods, Mark Sandor

    Issue: Volume 1, Issue 1, June 2017
    Pages: 8-13
    Received: Nov. 17, 2016
    Accepted: Dec. 13, 2016
    Published: Jan. 07, 2017
    DOI: 10.11648/j.ep.20170101.12
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    Abstract: In this paper, the stress singularity in homogenous material was studied using an optical experimental method. The study on stress concentration is of great research value to evaluate the damage inside materials. Coherent gradient sensing (CGS) is introduced to study the mechanical behavior of homogeneous material which was widely used in industry ... Show More
  • Effect of High Hydrostatic Pressure on the Abrasive Wear of Hard Alloy Materials

    Vasily Mishakin, Stanislav Verichev, Evgeny Razov

    Issue: Volume 1, Issue 1, June 2017
    Pages: 14-20
    Received: Nov. 30, 2016
    Accepted: Dec. 22, 2016
    Published: Jan. 07, 2017
    DOI: 10.11648/j.ep.20170101.13
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    Abstract: The study of the influence of high hydrostatic pressure on abrasive wear of hard alloy materials has been done using a custom-made setup allowing testing of abrasive wear of materials under hydrostatic pressures of up to 250 atm. It has been confirmed that high hydrostatic pressure has a significant effect on the wear rate of studied materials. By ... Show More
  • Vertical Radio Refractivity Profile for Calabar in the Southern Region of Nigeria

    Ngwu Chinyere Rosemary, Ozuomba Simeon, Okon Abasiama Colman

    Issue: Volume 1, Issue 1, June 2017
    Pages: 21-26
    Received: Oct. 25, 2016
    Accepted: Jan. 03, 2017
    Published: Jan. 30, 2017
    DOI: 10.11648/j.ep.20170101.14
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    Abstract: In this paper, six months Radiosunde data for Calabar in the Southern region of Nigeria is used to model vertical refractivity profile. Calabar is located in Cross River State 4°57’North in latitude and 8°19'East in longitude which is in the South South region of the country. The Radiosunde data is obtained from Nigerian Meteorological Agency (NIME... Show More
  • Determination of Loss of Load Probability for Stand-Alone Photovoltaic Power System

    Ogbonna Chima Otumdi, Constance Kalu, Idorenyin Markson

    Issue: Volume 1, Issue 1, June 2017
    Pages: 27-32
    Received: Oct. 25, 2016
    Accepted: Jan. 03, 2017
    Published: Jan. 30, 2017
    DOI: 10.11648/j.ep.20170101.15
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    Abstract: In this paper, the loss of load probability for stand-alone photovoltaic (SAPV) power system was determined for an ICT Center with total daily energy demand of 346480 Wh/day. However, the different electrical appliances are classified into four (4) different load priority levels depending on the acceptable loss of load probability of the appliance ... Show More