کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
774917 1463219 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of comb transducers with sliding teeth
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Analysis of comb transducers with sliding teeth
چکیده انگلیسی
Ultrasonic comb transducer generates surface acoustic waves on an elastic substrate by periodic traction exerted by its vibrating periodic teeth on the substrate surface. In this paper, the comb teeth are actually sliding elastic spacers between an acoustic buffer and the substrate. The incident wave in acoustic buffer scatters on periodic spacers producing interface waves in the system which transform into Rayleigh waves at the transducer edges. The full-wave theory of interface wave generation is presented, concluded by efficiency estimation of transformation of the incident wave into the surface wave in the substrate and of the surface waves back to bulk waves in the acoustic buffer. Numerical examples presented for all aluminum substrate, buffer and teeth show the 11-teeth comb combined efficiency for generation and detection on the level of −40 dB for optimized teeth height.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Mechanics - A/Solids - Volume 30, Issue 4, July–August 2011, Pages 510-516
نویسندگان
,