Intelligent composites containing measuring fiber-optic networks for continuous self-diagnosis

摘要

A collaborative European Programme N$+$DGR$/ RI 1B 0173-C(CD) under the auspices of BRITE (Basic Research in Industrial Technologies for Europe), jointly sponsored by the Commission of the European Communities and European Industry, was launched in 1988 to explore and develop an optical sensor network embedded in composite for measuring the strain and temperature distributions. Its objectives and first results were presented at the `Fiber Optic Smart Structures and Skins II' conference (Sept. 1989, Boston). This paper will describe the work and the main results which have been obtained since then. Three main areas have been covered which have concerned the implementation of a coherence based parallel quasi- distributed sensing system, the simultaneous measurement of temperature and strain and the mechanical properties of composite material with embedded sensor. All results have shown the high interest of such an optical sensing network for structure monitoring.