Cylindrical Rayleigh surface waves on a layer-coated cylinder measured by PVDF transducer and defocusing measurement method

Identification of the Inhomogeneous Cylindrical Waveguide Properties

“…Особое внимание ученых обращено к технической стороне вопроса, в частности к способам и экспериментальным установкам измерения механических полей и их характеристик для объектов с покрытиями. В работе [22] представлена измерительная система и методика обработки полученного сигнала для точного измерения скорости поверхностной волны в упругих цилиндрах с покрытием. Получены и сопоставлены теоретические и экспериментальные данные.…”

The frequency equation of Rayleigh waves in a piezoelectric smart material

“…The nonlinear constitutive equations for magnetoacoustic or thermo-electro-elastic materials which are considered the basic tools for studying the propagation of surface acoustic waves in isotropic or anisotropic materials may be found in many works of literature such as [20]- [25]. Recently, There are several papers concerning various problems based on the theory of surface acoustic waves, especially, a Rayleigh surface waves propagation problem in many hypotheses (see, e.g., Chirita et al [26], Sharma [27], Bucur et al [28], Torello et al [29], Lin et al [30] and Singh [31]. The present paper investigates Rayleigh surface acoustic waves in anisotropic piezoelectric materials.…”

Kaji Eksperimental Prediksi Ketebalan Nitridasi Pada Baja SKD 61 Menggunakan Metode Gelombang Ultrasonik

“…Pengukuranpengukuran lapisan tipis maupun lapisan di bawah permukaan berhasil dilakukan dengan metode disperse gelombang permukaan, kombinasi gelombang permukaan, dan metode non -linier [5][6][7][8] . Sementara itu tipe gelombang Rayleigh berhasil digunakan untuk melakukan perhitungan tegangan dan pengukuran lapisan pada silinder [9,10] . Gambar 4.…”