http://103.99.128.19:8080/xmlui/handle/123456789/48 Proceedings published in Dept. of M.E. 2026-04-19T10:33:00Z http://103.99.128.19:8080/xmlui/handle/123456789/408 International Conference on Mechanical Engineering 2013 Bangladesh University of Engineeing and Technology This is softcopy of the proceedings of the International Conference on Mechanical Engineering 2013 (ICME2013) 20 – 21 June, 2014, Dhaka, Bangladesh. 2014-06-20T00:00:00Z http://103.99.128.19:8080/xmlui/handle/123456789/394 Evaluation of a Wells Turbine Model for Ocean Wave Energy Conversion using Oscillating Water Column Ahmed, Rasel; Rahman, Kazi Afzalur; Hridoy, Monowar Wadud Wave energy of oceans has a large potential to harness energy all over the world. Most of the wave energy extracting devices are based on the oscillating water column (OWC) technique. This study done on a small scale describes the designing of a Wells turbine to be used in an Oscillating Water Column power plant and laboratory-based test for evaluating such turbines. The test shows how RPM varies with respect to flow coefficient and gives the idea to choose turbine specification for given wave power. In this study, maximum rpm was found 396 at flow coefficient 0.425 by using a 35 cm diameter turbine whose mass inertia was 450 gm. This study shows that for large power output, the turbine size should be large in diameter and flow coefficient should be in the range of 0.4 to 0.5 for efficient turbine operation. Though power output was found small, among the various processes of conversion of wave energy, the oscillating water column (OWC) by employing Wells turbine can be a prominent and bright source of renewable energy source. 2020-12-19T00:00:00Z http://103.99.128.19:8080/xmlui/handle/123456789/392 An Experimental Study on Wheel Alignment and Shock Absorber Conditions for Fuel Performance Analysis of a Light Vehicle Das, Riton Kumer; Hossain, Md. Abu Mowazzem; Islam, Md. Tazul; Banik, Sajal Chandra In this study, an EHCO PLUS- 2ZZ-GE-02 model light vehicle was used to analyze the fuel performance with the consideration of the effect of wheel alignment and shock absorber conditions. In the experimental setup, a computerized machine vision-based wheel alignment measuring system was used to detect the misalignment of the wheels and the fuel performance of the vehicle measured before and after wheel alignment. The analysis results reveal that fuel consumption depends on wheel alignment. Also, the wheel alignment has been greatly affected by shock absorber conditions. Through the experimental process, it is found that wheel misalignment under inflation pressure in the tire and improper shock absorber condition resulted in increasing the fuel consumption rate. However, the fuel consumption rate of the vehicle has significantly improved by adjusting the alignment of wheels. 2020-12-19T00:00:00Z http://103.99.128.19:8080/xmlui/handle/123456789/391 A Numerical Study on Interaction of A0-mode Lamb Wave with Cylindrical Hole in CFRP Composite Laminates Rabbi, M S; Teramoto, K; Khan, T I This study represents the interaction of A0-mode Lamb wave at a cylindrical hole in composite laminates focusing on its scattering characteristics. A 3-dimensional Finite Element Modeling (FEM) is used to discuss the effect of the stacking sequence in the wave propagation. An excitation signal of 30 kHz, modulated by Hanning window is allowed to propagate with plane strain condition in a defected squared shape laminate. Propagations of Lamb wave in 8-layered composite laminates with an identical defect are considered. It is found that the reflecting and transmitting characteristics of the incident wave dominated by the outermost layer and the pattern varied with different stacking sequences. The outcomes of this computational study help to the use of the A0-mode Lamb wave for damage characterization and detection in composite laminates. 2020-12-19T00:00:00Z