Characterization of anisotropic materials using a non-destructive free vibration method


  • Catalin Andrei Neagoe Institute of Solid Mechanics of the Romanian Academy, Bucharest, Romania
  • Tudor Sireteanu Institute of Solid Mechanics of the Romanian Academy, Bucharest, Romania
  • Ana-Maria Mitu Institute of Solid Mechanics of the Romanian Academy, Bucharest, Romania


composite, FRP, vibrations, dynamic analysis, genetic algorithm, modal identification


The outcome of a proposed analysis procedure aimed to determine the elastic properties of fiber reinforced polymer (FRP) profiles is presented and discussed in the current paper. An experimental modal analysis was used to obtain the resonance frequencies and mode shapes of a single glass FRP profile, and a similar finite element model simulation was created to estimate natural frequencies and mode shapes numerically. Corresponding frequencies were allocated using the modal assurance criterion. By comparing results obtained by different methods, it is proved that a non-destructive technique based on the free vibration response can be successfully used to evaluate the elastic properties of fiber reinforced polymers.


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