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Investigation of the effect of angle beam transducer parameters on the lamb wave field in the three–layer plate by normal mode expansion method | ||
Journal of Computational Applied Mechanics | ||
دوره 51، شماره 2، اسفند 2020، صفحه 482-485 اصل مقاله (546.6 K) | ||
نوع مقاله: Research Paper | ||
شناسه دیجیتال (DOI): 10.22059/jcamech.2020.308282.543 | ||
نویسنده | ||
Pezhman Taghipour Birgani* | ||
Department of Mechanical Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran. | ||
چکیده | ||
The effect of angle beam transducer parameters such as wedge angle and width transducer on the Lamb wave field generated in the elastic-viscoelastic three-layer plate has been investigated using normal mode expansion method. At first, the propagation of Lamb wave in the three-layer plate has been investigated using global matrix method, and all the modes that are propagated in the three-layer plate have been specified. Then, the optimum parameters of angle beam transducer have been obtained to generate a mode with minimum attenuation at a specific frequency. In addition to this mode, other modes are also generated in the three-layer plate, but this mode has maximum energy in the three-layer plate. The results indicate that the energy contribution of the mode with minimum attenuation at a specific frequency is 99.9% of the total energy and this mode has the highest energy contribution. | ||
کلیدواژهها | ||
Angle Beam Transducer؛ Three-Layer Plate؛ Attenuation؛ Lamb Wave؛ Normal Mode Expansion | ||
مراجع | ||
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