In this work an experimental
program is described, aimed to assess the possibilities and the limits of fiber
optic sensors (FOS) in structural testing and monitoring. Specimens made of
steel and
composite materials have been equipped by FOSs and electrical strain
gauges. Tensile and flexural tests were carried out, in order to compare the
two types of strain sensors. Dynamic tests too have been accomplished, with the
aim to verify the possibilities and the limits of FOSs in the dynamic low
frequency field. Finally, a beam of a RC bridge has been equipped with a FOS
applied to a rebar, in order to check the capability of such sensors in
monitoring the effect of temperature variations.