Browsing ERU - 2000 by Title

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  • Improving the efficiency of electro discharge machining by dual voltage excitation 
    Jayasinghe, JAKS [Conference-Full-text]
    An Electrical Discharge Machine (EDM) is a vital machine used in manufacture of tools and dies. Its operation is based on discharge of an electrical current across the tool and the work-piece. Due to limitations of the ...
  • Influence of linings on stress and deformation in rock around tunnels 
    Puswewala, UGA; Gunatilaka, IRP; Hapuarachchi, CL; Nandasena, RM [Conference-Full-text]
    Stress distribution and deformation in rock around lined tunnel openings subjected to internal pressure are investigated by using plane strain finite element analysis. Two typical tunnel cross- sections, in the forms of ...
  • Internally, stabilized earth retaining systems with discarded tyres 
    Kulathilaka, SAS; Nawagamuwa, UP [Conference-Full-text]
    Internally stabilized earth retaining systems became popular and came into extensive usage over the last two decades due to the many advantages inherited in them. Different forms of internally stabilized earth retaining ...
  • Knowledge based software for loading and stability of ships 
    Wimalsiri, WK [Conference-Full-text]
    Loading and Stability calculations of ships became a more and more complicated and time consuming process as the ship sizes and design complexity increased. Accurate and efficient methods of evaluating and analysing stability ...
  • Optical characterstics of carbon based semiconductors 
    Munindradasa, DAI; Amaratunga, GAJ [Conference-Full-text]
    The photoluminescence (PL) in a-C:H:N was measured using a 2.4leV Ar ion laser line for varying N content. The PL results show a lowering of the PL peak energy and a spectral line width broadening as the N content in the ...
  • An over-current indica tor 
    Ranaweera, A; Chandanandana, D; De Silva, MTK; Hewawasam, HYA; Indika, K [Conference-Full-text]
    The over-current indicator indicates to the user that the current in a circuit is exceeding its rated value as soon as it occurs. The current is sensed by a current transformer (CT) and the rectified and regulated output ...
  • Passive concepts for improvement of thermal and visual comfort in houses in Sri Lanka 
    Jayawardane, AI; Jayasinghe, MTR; Attalage, RA [Conference-Full-text]
    One of the primary requirements of houses constructed in hot humid climatic conditions such as those prevailing in Sri Lanka is that those should be thermally comfortable for the occupants throughout the day and around the ...
  • Performance analysis of pedestal fans an experimental investigation 
    Sugathapala, AGT; Somarathne, PBI [Conference-Full-text]
    Performances of pedestal fans were analysed through experimental measurements of the induced flow field (velocity distribution) and the power consumption by two different types of fans. A test rig was constructed to ...
  • Prediction of compressive strength of concrete 
    Nanayakkara, SMA [Conference-Full-text]
    This report presents a method of predicting the compressive strength of concrete. The approach is based on experimental investigation of compressive strength development of four mix proportions with three different brands ...
  • Preparation and properties of starch xanthide encased powdered natural rubber 
    Amarasinghe, ADUS; Subramaniam, K; Maduwage, S [Conference-Full-text]
    Starch xanthide encased powdered natural rubber was produced by oxidatively co- precipitating the mixture of starch xanthate solution and natural rubber field latex under vigorous stirring. The resulting finely divided wet ...
  • Proceedings of the 06th annual symposium 2000 (Pre Text) 
    Hettiarachchi, P [Conference-Full-text]