Now showing items 1-3 of 3

    • Bi-angular lens for material characterization 

      Yaralıoğlu, Göksen Göksenin; Atalar, Abdullah; Köymen, Hayrettin (IEEE, 1994)
      In this paper a new lens design is proposed for characterization of layered materials. Lamb wave lens employs Lamb waves for this purpose since these waves propagate along interfaces. However, below cut-off angle, the ...
    • Measurement of sensitivity of different wave modes to subsurface defects 

      Atalar, Abdullah; Köymen, Hayrettin; Yemişçiler, O. (IEEE, 1988)
      Excitation of acoustic wave modes in a layered solid is investigated when the solid is immersed in a liquid. This is done by computing the reflection coefficient of acoustic plane waves at the liquid-layered-solid interface. ...
    • Recognition of vessel acoustic signatures using non-linear teager energy based features 

      Can, Gökmen; Akbaş, Cem Emre; Çetin, A. Enis (IEEE, 2016-10)
      This paper proposes a vessel recognition and classification system based on vessel acoustic signatures. Teager Energy Operator (TEO) based Mel Frequency Cepstral Coefficients (MFCC) are used for the first time in Underwater ...