Title :
Determination of transient dynamic pressure by piezoelectric sensor
Author :
WANG, Hui-ming ; Ding, Hao-jiang
Author_Institution :
Dept. of Mech., Zhejiang Univ., Hangzhou
Abstract :
The piezoelectric hollow sphere sensor is analyzed theoretically to predict the dynamic pressure with the knowledge of electric potential difference between the internal and external surfaces. The analysis is based on the three-dimensional theory of spherically isotropic piezoelectricity and is suitable for the piezoelectric hollow sphere sensor with arbitrary thickness. Under the free electric charge boundary condition, the relation between the dynamic pressure and the measured electric potential difference is derived as a second kind Volterra integral equation by means of the separation of variables method. The dynamic pressure is determined by solving the integral equation.
Keywords :
Volterra equations; electric sensing devices; piezoelectric devices; transients; Volterra integral equation; electric charge boundary condition; electric potential; hollow sphere; piezoelectric sensor; transient dynamic pressure; Boundary conditions; Civil engineering; Electric potential; Electric variables measurement; Integral equations; Mechanical sensors; Piezoelectricity; Pressure measurement; Sensor phenomena and characterization; Transient analysis; Piezoelectric sensor; Volterra integral equation; dynamic pressure; hollow sphere;
Conference_Titel :
Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-2891-5
DOI :
10.1109/SPAWDA.2008.4775784
