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    Item type:Article, Access status: Open Access ,
    Interdigital transducers for lamb-wave based SHM systems: design and sensitivity analysis
    (2011) Mańka, Michał; Rosiek, Mateusz; Martowicz, Adam; Uhl, Tadeusz
    Structural health monitoring (SHM) systems have been constantly improved in the past decades. Sensors for SHM should be built-in to perform continuous measurements in opposite to non-destructive testing (NDT), in case of which sensors have to be mounted on the structure only during measurements. One of the most promising type of the transducers dedicated for SHM systems is Interdigital Transducer (IDT), which is designed for ultrasonic Lamb wave monitoring. Mode selectivity, high excitation strength, wave directivity, small size and relatively low cost are the most important advantages of the IDT. In the paper a designing process of the IDT is presented. Then, the results of numerical simulations and sensitivity analysis are discussed for exemplary IDT configuration.