PPK MEKATRONIK UniMAP Final Year Project Proposal Session 2014/2015 Supervisor Name: Dr. Tan Wei Hong No 1 Project Title / Field of Study Modal analysis of a fan blade Field of study: Applied Mechanics 2 Modal analysis of 3 metallic plates Field of study: Applied Mechanics 3 Development a home based impedance tube Field of study: Problem Statement Objective(s) Scope(s) Expected Outcome(s) Natural frequency of fan blade will change as the blade is crack/break. 1. To evaluate the natural frequency or mode shape of fan blade. 1. The fan blade used in the experiment is the home based table fan. 1. Natural frequency of fan blade will be different when it is fail/broken /crack. 2. To determine the failure operating speed of the fan blade. Different metallic plate with give different natural frequency to suit different kind of application. 1. To evaluate the natural frequency or mode shape of 3 different metallic plate. 2. To justify the which parameter of plate provide the most affect on the natural frequency of metallic plate. A cheaper home based impedance tube is built for sound absorption coefficient 1. To develop a low cost impedance tube for sound absorption coefficient 2. Modal analysis is conducted under free-free boundary condition. 3. Finite Element (FE) software to be used is ANSYS. 1. The suggested metallic plates used in the experiment are aluminium, mild steel and alloy. 2. Modal analysis is conducted under free-free boundary condition. 3. Finite Element (FE) software to be used is ANSYS. 1. The developed impedance tube able to measure sound absorption coefficient of specimen for the frequency range 1500 2 The modal analysis technique can be used to analyze others system, such as wind turbine. 1. Natural frequency of metallic plate will be different for different materials, thickness, mass and boundary condition. 2 The modal analysis technique can be used to analyze others system, such as wind turbine. 1. The learned engineering knowledge are applied for designing and developing a home based impedance List of component (Hardware/Softwar e to be used) 1. Accelerometer 2. LMS Test Express 3. Impact hammer 4. LMS Modal analysis 5. ANSYS software Estimated Budget *to be bourne by supervisor’s research grant RM100 1. Accelerometer 2. LMS Test Express 3. Impact hammer 4. LMS Modal analysis 5. ANSYS software RM100 1. Brass tube 2. LMS Test Express 3. Microphone 4. LMS Virtual Lab software RM500 PPK MEKATRONIK UniMAP Design & Manufacturing 4 Determination of material using acoustic technique. measurement. Acoustic technique with non-destructive to clarify or determine the different materials. Field of study: Applied Mechanics 5 Optimization of microperforated panel sound absorber. Field of study: Applied Mechanics measurement. Hz to 4800 Hz. tube. 2. To determine the sound absorption coefficient of the test specimens, such as foam, porous materials etc. 2. The brass tube is proposed to be used for the impedance tube fabrication. 2. The sound absorption coefficient of sound absorbing material can be measured by using the fabricated impedance tube. 1. To justify different material by using the acoustic technique when a ball bearing is dropped on it. 2. To evaluate the level of impact sound in terms of thickness, material, and size. Problem occurring when deciding the optimum parameters for an MPP sound absorber to provide wide range sound absorption coefficient. 1. To determine the optimum parameters of an MPP sound absorber for wider band sound absorption coefficient. 2. To develop the related optimization algorithm for MPP 3. Acoustical software to be used is LMS Virtual Lab. 3. The measured sound absorption coefficient of material can be used in the simulation for further acoustical analysis. 1. The ball bearing is used to impact on the materials and the impact sound is recorded. 1. The level of impact sound will be different for different kind of testing materials. 2. The software of recording sound to be used is Audacity. 2. The technique might be applied on the classification of fake coins. 1. The optimization evaluation is used to tune the sound absorption coefficient more than 0.5 for the frequency range 1000 Hz to 2000 Hz. 1. The optimum parameters of MPP sound absorber for wider band and higher sound absorption coefficient can be obtained. 2. The simulated annealing (SA) optimization algorithm is used for the optimization study. 2. The developed optimization algorithm or technique can be applied in other applications. 1. Ball bearing 2. Microphone 3 PC/Laptop 4 Anechoic room 5. Audacity software RM50 1. PC/Laptop 2. Matlab software RM10 PPK MEKATRONIK UniMAP 6 Acoustical simulation analysis of silencer Field of study: Applied Mechanics Parameters of silencer should be considered for obtaining high transmission loss performance of silencer. sound absorber. 3. The optimization evaluation software to be in this study is Matlab. 1. To develop the acoustical simulation modeling of silencer. 1. The simulation is used to analysis the performance of silencer before carrying out the prototyping. 2. To evaluate the transmission loss performance of silencer in the early stage of design. 2. The boundary element method (BEM) simulation algorithm is used for the study. 1. The transmission loss of the silencer can be determined related to the design of silencer. 1. PC/Laptop 2. LMS Virtual Lab software 3. ANSYS software RM10 1. PC/Laptop 2. Matlab software RM10 2. The developed simulation model can be applied in other silencer with different designs. 3. The simulation software to be in this study is LMS Virtual Lab. 7 Optimal design of vibration isolators for vibrating machines Field of study: Applied Mechanics Suitable and optimal design vibration isolators are needed for fine tuning the vibrating frequency for the vibrating machines to reduce its vibration level. 1. To develop the mathematical model for the proposed vibration isolators. 2. To optimize the designs of vibration isolators which tune for the vibrating machines. 1. The vibrating machines can be used for the optimized are airconditioner compressor, washing machines, and others. 2. The constrained nonlinear minimization optimization algorithm is used for the optimization study with aid of Matlab software. 1. The optimum parameters of vibration isolators for reducing the vibration level of vibrating machines can be obtained. 2. The developed optimization algorithm or technique can be applied in other applications.
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