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Development of piezoelectric vibration sensor to analyze building vibrations

Show simple item record De Silva, HTTM Dayananda, PKAS Adikary, SU 2019-09-03T07:34:02Z 2019-09-03T07:34:02Z
dc.description.abstract When buildings are exposed to vibration or shock, those buildings can be damaged partially or fully depending on the vibration energy. Therefore, quantitative analysis of building vibration has become popular among researchers. In this research, vibration sensor was developed using piezoelectric ceramic cantilever beam and tip mass to confirm the vibration frequency of the building does not exceed the cosmetic damage range. As the first step, mathematical model was derived to calculate the resonance frequency of cantilever beam with a tip mass. At the resonance frequency, maximum amplitude could be achieved resulting a higher output voltage of piezoelectric sensor. The derived mathematical model and finite element analysis were used to determine the accurate dimensions of the cantilever beam based piezoelectric sensor. 31 coupling mode was used to measure the voltage difference in piezoelectric material. Faster Fourier Transformation function was used to analyze the signal. Output voltage of piezoelectric sensor was calculated using finite element analysis at vibration frequency range that corresponds to cosmetic damage. According to the calculations, threshold voltage level and frequency of sensor are 4.35mv and 9.5Hz respectively to activate the alarm. Finally, by using a vibration source, comparatively high accuracy of 92% voltage value was obtained from the proyotype device compare to the software modelling. The developed sensor module is capable of indicating harmful vibrations on building structures. en_US
dc.language.iso en en_US
dc.subject Cosmetic damage to building en_US
dc.subject Piezoelectric sensor en_US
dc.subject Cantilever beam en_US
dc.subject Finite element analysis en_US
dc.title Development of piezoelectric vibration sensor to analyze building vibrations en_US
dc.type Conference-Abstract en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Materials Science and Engineering en_US
dc.identifier.year 2019 en_US
dc.identifier.conference Moratuwa Engineering Research Conference - MERCon 2019 en_US Moraruwa, Sri Lanka en_US

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