Compressional and torsional wave amplitudes in rods with periodic structures

• DOI: 10.1121/1.1509431
• Publication Date: 2002-10-31T18:22:02Z
• Authors: A. Morales; J. Flores; L. Gutiérrez; R. A. Méndez-Sánchez
• Keywords: Rod; Hertz

To measure and detect elastic waves in metallic rods a low-frequency electromagnetic-acoustic transducer has been developed. Frequencies range from few hertz up to hundreds of kilohertz. With appropriate configuration the transducer, compressional or torsional can be selectively excited detected. Although used many different situations, it tested applied locally periodic rod, which consists finite number unit cells. The measured wave amplitudes are compared with theoretical ones, obtained one-dimensional transfer matrix method, excellent agreement is obtained.