Engineering, Built Environment & Spatial Sciences: Recent submissions

Now showing items 21-40 of 51

    • A Novel Discrete Transform 

      Gunarathna, W. A; Nasir, H. M (2016)
      The notion of a discrete transform is of great importance in solving many problems in Science and Engineering. For instance, the ordinary discrete Fourier transform (DFT) is one of the most important and distinguished ...

    • Finite Element Analysis of a vehicle chassis cross - member spot weld design 

      Udayanandana, RMRC; Pussepitiya, PPSS; Lahr, Jens (2016)
      This paper addresses the analysis of LDV light commercial van chassis cross member spot weld design. First the experimental test was conducted to measure the deflection and strain values under different load conditions. A ...

    • Alert value calculation model for aircraft rotable components 

      Wijayaratne, RD; Kaluthantri, CY; Asanga, RMC; Keeregala, KCS; Rodrigo, WTS (2016)
      There are pressing reasons for developing a better understanding group of indicators to assess social, economic and environmental sustainability of fuel wood systems. Therefore an important current research need is to ...

    • Indicators for Assessing Social Sustainability of Fuel Wood Systems 

      Sirikumara, K J (2016)
      There are pressing reasons for developing a better understanding group of indicators to assess social, economic and environmental sustainability of fuel wood systems. Therefore an important current research need is to ...

    • Usage of Quarry Dust and Lime as a stabilization agent for Fine grained soils 

      Sirisena, VGP; Premadasa, WN (2016)
      From recent past, a great amount of attention has been given to the use of alternative materials, which provide higher engineering quality than conventionally used materials as well as the financial affordability. Engineers ...

    • Reducing the Volume of Municipal Solid Waste in Karadiyana Dumpsite by Using Compaction Method 

      Samarakoon, MB; Suresh, KAS; Amarawardana, DWDB (2016)
      The Karadiyana dumpsite is located 25 km from the financial capital of Sri Lanka. It serves two urban councils and four local authorities. It is considered to be one of the most polluted dumpsites in Colombo District. Water ...

    • Helicopter Main Rotor aerodynamic simulation with CFD 

      Perera, GAPR; Jagathsinghe, HDH; Dilshan, SKK; Sudaraka, MAM; Rangajeeva, SLMD (2016)
      The Bell 212 helicopter is one of the major general purposes utility rotorcraft currently in use in SLAF which is containing NACA 0012 aerofoil in the two blades of main rotor. The primary objective of this research project ...

    • Development of Downdraft Biomass Gasifier 

      de Silva, F B Y Randana; Abeygunasekara, S (2016)
      Gasification is a thermal conversion process in which both heat and a combustible gases are produced. One method of gasification referred as partial oxidation, It is very similar to combustion, except that it occurs with ...

    • Mathematics of architecture: A study of the philosophy of emerging architecture 

      JOHN, GKP (2016)
      Mathematics has been used in architectural design since the ancient times. Modern architectural forms designed on digital design platforms based on complex mathematical equations differ from Euclidean geometry. The ...

    • Optimized manpower capacity planning model for aviation industry 

      Rodrigo, WTS; Wijethunga, APLM; Botheju, WTL; Wijepala, ACS; Wickramasinghe, K (2016)
      Aircraft Maintenance is a combination of complicated tasks that ensures the safety of the technicians, airworthiness of the aircraft as well as the safety of the passengers where the workload is subdivide as base and line ...

    • Hydrodynamic Interaction Effects on Tugs Operating within the Midship Region alongside Large Ships 

      Jayarathne, N; Leong, Z; Ranmuthugala, D (2016)
      This paper presents the findings of a numerical and experimental study to investigate the interaction effects induced on a tug operating within the midship region of a large ship at varying drift angles and lateral distances ...

    • Automated Paddy Transplanter 

      Pakshaweera, DKP; Guruge, CGT; Dhanushke, DSJ; Fernando, WSP; Wijesinghe, WLPK (2016)
      Rice is the main staple food in Sri Lanka therefore paddy cultivation plays a major role in the Sri Lankan economy. There are two main methods of paddy cultivation which are sowing and planting. Sowing is the current trend. ...

    • Estimation of Hydro-acoustic Signatures Originated from Ship's Hull Vibration 

      Dasanayaka, D.M.P.M; Perera, P.A.B.A.R (2016)
      The origin of shipboard hull vibrations is dominantly determined by vessels propulsion system, main machinery, auxiliary systems, pumps, breaking of the waves at the ship hull, etc. All of these peripherals and systems ...

    • A Feasible Action copying Exoskeleton upper limb for Partially paralysed polio patients in Sri Lanka 

      David, RS (2016)
      Although the WHO declared Sri Lanka as a country that is free from polio, many people who had previously been attacked by poliomyelitis are still left out in our society. Most of these patients belonging to flaccid paralysis ...

    • Evaluate the potential of applying a nano paint on SLAF Y - 12 (II) aircraft as a nanotechnology modification 

      Hiripitiya, ND; De Soysa, HVH; Dilshan, SKK; Wijayathunga, WMSKB; Kuruppu, KADD; Lokupathirage, DJK (2016)
      This study is mainly focused on enhancing the durability of the existing external paint coated on Y-12(II) aircraft by using a ? Flight Shield ? nanopaint. According to the literature, this nanopaint is a crystal clear and ...

    • Study and Analysis on Security of Ad - Hoc Networks 

      Kuruppu, KDRS; Weerawardane, TL (2016)
      Mobile Ad Hoc Network (MANET) represents a system of wireless mobile nodes that can freely and dynamically self-organize into arbitrary and temporary network topologies. Due to this dynamic nature and due to the absence ...

    • Analysis of Fatigue Crack Initiation of On-Condition Aircraft Structural Components 

      Samaratunga, SLMDS; Weerasinghe, RM; Jayathilaka, KWKA; Ampitiyawaththa, AARMW; Rodrigo, WTS (2016)
      This project aims to analyses the fatigue crack initiation of an on condition component and assigns more reliable and accurate inspection intervals to identify the failure soon after it occurs. The current method of ...

    • Aircraft Structural Integrity Analysis through Fati gue Crack Propagation 

      Casseer, DR; Rathnayake, RMMP; Sanjeevan, T; Wickramasuriya, SM; Rodrigo, WTS (2016)
      The life of an aircraft depends mainly on the specific usage of the aircraft. The manufacturer defines a lifetime for the general usage of the aircraft. But with the specific usage of the aircraft, the aircraft structure ...

    • An Effective Design and Construction of Robotic musical instrument Using PIC Microcontrollers 

      David, RS; Warnakulasooria, SI; Ranawaka, NDKS (2016)
      An automated musical instrument is a device which generates sounds using mechanical actuators, electronics and control process rather than conventional human involvement. The main problem in developing such a device can ...

    • Optimization of the Longitudinal Stability of Unman ned Aerial Vehicle (UAV) UX 004 

      Jayasinghe, GDN (2016)
      Improper longitudinal weight distribution within any air vehicle cuts down the efficiency from the standpoint of altitude, manoeuvrability, rate of climb, endurance, and speed. It may even be the cause of an uncontrollable ...