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ICHMT DIGITAL LIBRARY ONLINE

ISSN 961-91393-0-5

Individual price:

$246.00 (Must be sent to your home address)

You can order single issue or individual article. To purchase a single issue or an individual article as well as to view tables of contents and abstracts click on issue number.

Institutional price:

$518.00

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various

For Online Access

Year 2005

• 18th Australasian Heat and Mass Transfer Conference
Curtin University of Technology, Perth, Western Australia, 26-29 July 2005

239 pages

Volume price - $518.00

Modelling the static thermal sensitivity of diaphragm-based fibre optic pressure sensors

Ahmad Sharifian
University of Southern Queensland (USQ), Toowoomba, QLD, 4350, Australia

Stuart Watson
Heriot-Watt University (HWU), Edinburgh, EH14 4AS, UK

David Buttsworth
University of Southern Queensland (USQ), Toowoomba, QLD, 4350, Australia

James Barton
Heriot-Watt University (HWU), Edinburgh, EH14 4AS, UK

ABSTRACT

Diaphragm-based fibre optic pressure sensors can offer high temporal and spatial resolution pressure measurements at modest cost, but they can suffer from the detrimental effects of temperature cross-sensitivity. A simple construction for these sensors involves a zirconia ferrule as the substrate for a polished copper foil diaphragm, and a liquid adhesive as the bonding layer between the two. It is proposed that elimination of the adhesive layer through the use of direct bonding techniques, such as electroplating or ultrasonic welding, could reduce the temperature sensitivity. The thermal sensitivity of two types of sensor -one with and one without an adhesive layer - is studied using finite element modelling. The results show that the new construction technique could reduce the temperature sensitivity by up to 62 %.