Simultaneous measurement of pressure and temperature using single mode optical fibres embedded in a hybrid composite laminated

• Type: Article in International Scientific Journal
• Date: 2005

Authors

Frazao, O (Author) Other; Ramos, CA (Author) Other; Pinto, NMP (Author) Other; Baptista, JM (Author) Other; António Torres Marques (Author) FEUP

Journal

Title: Composites Science and Technology

Vol. 65 No. 13

Pages: 1756-1760

ISSN: 0266-3538

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 10 Citations

Scopus - 8 Citations

Other information

Authenticus ID: P-000-1FQ

DOI: 10.1016/j.compscitech.2005.03.002

Abstract (EN): In this paper, we present a novel smart composite based on single mode optical fibres embedded in a hybrid composite laminated. This smart composite comprehended three optical fibres: an optical fibre positioned between two layers of carbon fibres; other optical fibre embedded in two layers of glass fibres; and another optical fibre inserted between the two different composite laminates. Due to cure process using hot plate press, different optical attenuations were obtained for the three optical fibres. The optical fibre positioned between the two different layers (carbon/glass) presented higher losses when compared with the two other optical fibres embedded between equal types of layers. The losses result from the different diameter of carbon/glass and the different coefficient of thermal expansion of the composite material. The smart composite was characterised in terms of its sensitivity to temperature and pressure, independently. Using a matrix method, it was possible to discriminate the pressure and the temperature with only one measurement. Maximum errors of 2.45 degrees C and 0.6 kN/m(2) were found to 60 degrees C and 2500 kN/m(2) measurement ranges.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5