Rides, M; Allen, C R G; Yan, F* (2007) Experimental evaluation of a piezoelectric cantilever for characterising the rheological properties of fluids. In: AERC 2007 4th Annual European Rheology Conference, 12-14 April 2007, Napolli, Italy.

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Abstract

Piezoelectric materials have found many applications as cost-effective sensors and actuators across a wide range of industries. Processing industries need sensors for process and quality control and their application areas are vast, for example foods, oils, pharmaceuticals, paints and inks. Piezoelectric sensors can potentially be used for monitoring and measuring the rheological behaviour of fluids. The PZT (lead zirconate titanate) piezoelectric device acts as both an actuator and sensor, providing a compact means for characterising materials, and is potentially suitable for installation for in-process measurement. The effect of the surrounding fluid on the resonant response of the device is measured and correlated to the properties of the fluid.

This paper presents the results of experimental investigations into the use of piezoelectric cantilevers as a rheological sensor. A range of materials has been investigated including polymer solutions, oils and food substances to demonstrate the capability of the device. The piezoelectric device has been used successfully on materials with a shear viscosity in the range 1 mPa.s to 500000 mPa.s. The working length of the device used for the measurements reported here is approximately 7 mm, although the development of smaller devices is being investigated.

Item Type:	Conference or Workshop Item (UNSPECIFIED)
Keywords:	PZT piezoelectric, rheology, viscosity
Subjects:	Advanced Materials Advanced Materials > Polymer Rheology
Last Modified:	02 Feb 2018 13:15
URI:	http://eprintspublications.npl.co.uk/id/eprint/3901

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