Abstract: This paper presents the design and finite element method (FEM) modeling of MEMS acoustic sensor optimized using the design rules of the commercially available Metal-Multi User MEMS Process (MetalMUMPs). The acoustic sensor is modeled with a structural layer of Nickel with 20 μm thickness. The acoustic sensor is designed for the detection of sound direction where the displacement amplitude of the sensor plates vary with the applied pressure and angle at specific sound frequency. Moreover, the stress induced in the sensor, corresponding to the input sound waves, is analyzed using FEM simulations and geometric modifications are made to have the stress in the sensor microstructure less than the yield stress of the Nickel. This allows to minimize the effect of mechanical fatigue on the proposed MEMS acoustic sensor performance.

• Publication Date: 10-Dec-2017
• DOI: 10.15224/978-1-63248-140-5-36
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Abstract: Clutch disc hub is provide torque transmission between clutch disc drive plate and gearbox input shaft. Therefore disc hub is expected to show high endurance and storage under high torsional forces The aim of this paper is to investigate shock strength of a clutch disc hub numerically with finite element analysis. There are many engine and transmission elements in vehicle such as connecting rods, engine gears, bearing caps and clutch hubs need to have high resistance under high forces during driving conditions. In this study a clutch hub models shock strength simulation was obtained by finite element analysis with powder material and steel (will be produced by machining). Depending on the clutch hub geometry and materials such as powder materials and steel, the absorbed energies were calculated with finite element method and comparison between two materials were investigated.

• Publication Date: 10-Dec-2017
• DOI: 10.15224/978-1-63248-140-5-37
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