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- W2085455879 abstract "Abstract At present time there exists the problem of development of main memory elements based on the delay of electromagnetic signal with frequency of ∼100 kHz on hundreds microseconds. This paper is devoted to theoretical and experimental investigation of the possibility of development of corresponding acoustic delay lines. It was supposed to use the antisymmetric acoustic waves of zero order propagating in thin (compared to wavelength) metal plates. In this connection, we theoretically studied the parameters of A 0 waves propagating in plates of various metals such as brass, bronze, copper, steel, and aluminum. For analysis of wave propagation in aforementioned plates, we used the standard motion equation and constitutive material equation for investigated medium as well as corresponding mechanical boundary conditions. As a result, the phase and group velocities versus parameter hf (h= plate thickness, f= wave frequency) were calculated for A 0 wave propagating in mentioned above plates. It has been found that for steel plate the delay time about 0.5 ms can be achieved at the lengths of waveguide L=0.373, 0.737, and 0.971 m for h=0.175, 0.5, and 1.0 mm, respectively at f=120 kHz. The theoretical results were verified by experiment, which showed the possibility of development of corresponding delay lines with delay time ∼500 mks and acceptable insertion loss. In experiments, the excitation and reception of A 0 waves were performed by the standard piezoelectric transducers of longitudinal waves and prismatic steel concentrators. The details of theoretical analysis and experiment are described." @default.
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- W2085455879 date "2010-01-01" @default.
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- W2085455879 title "Plate acoustic waves for low frequency delay line delaying signals up to 0.5 ms" @default.
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- W2085455879 doi "https://doi.org/10.1016/j.phpro.2010.01.069" @default.
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