Design And Development Of Sensor Array Consist Of Piezo Element For Fluid Jet Polishing Application

Mohd Najib, Ali Mokhtar and Ahmad Yusairi, Bani Hashim and Mohd Nazrin, Muhammad and Nik Syahrim, Nik Anwar and Nazri Huzaimi, Zakaria (2011) Design And Development Of Sensor Array Consist Of Piezo Element For Fluid Jet Polishing Application. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Design And Development Of Sensor Array Consist Of Piezo Element For Fluid Jet Polishing Application 24 Pages.pdf - Submitted Version Download (723kB)

Abstract

The Fluid Jet Polishing (FJP) is new in the field of optical fabrication or glass precision and is used as an alternative tool for polishing process. Shaping and finishing concave section of aspheric of glass is very challenging in optical fabrication. The current sub aperture polishing method is using small polishing tool to be in contact with the surface of work piece. As optical design become more complex in geometries, new alternative process is searched and continuously developed. Fluid jet polishing using abrasive waterjet is a newcomer in this field and it is believed to has more advantageous in sub aperture polishing method once the method is esTablelished. The jet profile and its parameter near impact wall are major point of interest in this study. A 3D finite-element model is developed as part of investigation. The piezoelectric patches are surface bonded on quadrilateral thin plate and supported withspring damper elements. The main goal of this paper is to investigate mechanical characteristics ofpiezoceramic array on membrane and the effect of force excitation using small motor and electricexcitation on the system. The system setup produced small vibration displacement and does not displace the plate beyond elastic strain region. The results show the linear behavior of piezoceramicand the correlation between electric excitation, motor vibration and displacement at the centre of theplate at different frequency range. The mode shapes and natural frequencies at low frequency spectrum are also presented. Therefore, the results can be used as reference to further develop fluid jet system with aid of piezoelectric patches.

Actions (login required)

View Item