The article carries the first results of a research project finalized to thecreation of a Non Destructive method of investigation to control the correctexecution and about the preservation state of the plates in FRP, utilized inthe static consolidation of buidings. The methodology provides for theutilization of two technics : Infrared VideoThermography and the micrInfrared microseismiclow- frequency ultrasound.Born for other fields, the composite materials with polymeric matrix, worldwideknown by the acronym FRP( Fiber Reinforced Polymers ), are finding moreand more application in civil engineering fileld. Their performancefeatures, shortly recalled in the article introduction., make themparticularly suitable for static consolidation of buildings, both those inwalling and those in reinforced concrete.At present one of the intervention technic more widespread in this field isthe plating one, consisting in sticking a laminate in FRP on the surface ofthe structural element to make stronger after a previous suitablepreparation of the support. To have an efficacious intervention it isnecessary that the laying is done in a correct way, that the rectilinearlyof the fibres and, mostly , sticking to the support is guaranteed. Then, sofar, one of the biggest interrogative about the use of these materials istheir duration in service conditions, if it is true that actually the highelectrochemistry resistance and the mechanical property theoretically makethem more durable than traditional materials as steel and concrete, butthere is not an experimentation in this field averting the arising of newproblems.On the grounds of these observations it is comprehensible how important isan investigation to make both on the stocks , during the process ofmanufacture to value the correct execution and on already - achievedintervention to estimate the preservation state.Subsequently we describe the first results of these investigation.
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