Title :
Measurement of the temperature distribution in fluids using ultrasonic tomography
Author :
Horwath, I. Basarab ; Dorozhevets, M.M.
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
This paper describes the non-invasive measurement of the distributed temperature in liquid using an ultrasound time-of-flight technique. The system uses eight piezoelectric transducers mounted circumferentially inside a pipe of diameter 300 mm. A reconstruction method was used to evaluate the temperature distribution within the plane of the transducers. The method is based on the approximation of the inverse function of the velocity of ultrasonic propagation by the linear combination of discrete and polynomial basis functions. A modified Gauss method is used solve the equations. The reasons for the non-uniform measurement path density is discussed
Keywords :
acoustic tomography; approximation theory; inverse problems; piezoelectric transducers; polynomials; temperature distribution; temperature measurement; ultrasonic imaging; ultrasonic transducer arrays; ultrasonic velocity measurement; discrete functions; distributed temperature; eight piezoelectric transducers; fluids; inverse function; linear combination; liquid; modified Gauss method; noninvasive measurement; nonuniform measurement path density; pipe; polynomial basis functions; reconstruction method; temperature distribution; ultrasonic propagation velocity; ultrasonic tomography; ultrasound time-of-flight technique; Acoustic arrays; Acoustic imaging/mapping; Acoustic tomography; Acoustic velocity measurement; Inverse problems; Piezoelectric transducers; Polynomial approximation; Temperature measurement;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401960
