Title :
Research on propagation characteristics of guided wave in rail excited by low-frequency piezoelectric transducer
Author :
Yu-sen Huo ; Di Wu ; Deng Wei ; Hua Xue ; Ya-ping Wang ; Yong-ping Teng
Author_Institution :
Dept. of Phys., Beijing Jiaotong Univ., Beijing, China
fDate :
Oct. 30 2014-Nov. 2 2014
Abstract :
This short paper introduced the piezoelectric sandwich transducer and obtained the vibration ratio between the front and back metal covers according to the electromechanical equivalent circuit derived by force and electric analogy method. The transducer´s resonance frequency is calculated using MATLAB programming, following by an experiment performed on a 1.5m long 50kg / m rail under laboratory conditions. The rail´s equivalent damped loss factor was measured and the attenuation curve was plotted using a sandwich transducer and a 352C33 low frequency acceleration sensor as excitation and receiving units respectively.
Keywords :
equivalent circuits; piezoelectric transducers; piezoelectricity; rails; sandwich structures; vibrations; MATLAB programming; attenuation curve; back metal cover; electric analogy method; electromechanical equivalent circuit; excitation unit; force analogy method; front metal cover; guided wave; laboratory conditions; low frequency acceleration sensor; low-frequency piezoelectric transducer; piezoelectric sandwich transducer; propagation characteristics; rail equivalent damped loss factor; receiving unit; transducer resonance frequency; vibration ratio; Ceramics; Mathematical model; Metals; Rails; Resonant frequency; Transducers; Vibrations; Damped loss factor; Decay rate of rail; Guided wave; Piezoelectric transducer; Sandwich transducer;
Conference_Titel :
Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA), 2014 Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-6424-6
DOI :
10.1109/SPAWDA.2014.6998623
