1. Laboratory of Vibrations and Acoustics, Federal University of Santa Catarina 1 , Florianópolis, SC, Brazil
2. Physics Department at States University of Feira de Santana 2 , Physics Project on Campus, Av. Transnordestina, S/N, Novo Horizonte, Feira de Santana, BA, Brazil
3. Exact and Earth Sciences of Department, University of the State of Bahia 3 , Campus I, Rua Silveira Martins, 2555, Cabula, Salvador, BA, Brazil