Title :
Acoustic emission source location using multi-frequency arrival times
Author :
Lympertos, Efstratios ; Dermatas, Evangelos
Author_Institution :
Inst. of Chem. Eng. & High Temp. Chem. Processes, Patras Univ.
Abstract :
In this paper, a method for a direct estimation of the source-sensor distances and the time of an acoustic emission event is presented using multiple sensors and the arrival-times for a certain number of frequencies. The mean square error (MSE) problem is solved directly for any set of available data. It is also proved that in case of error-free arrival-times, the source position can be derived analytically as a function of the material constant
Keywords :
acoustic signal processing; array signal processing; mean square error methods; MSE; acoustic emission source location; mean square error; multifrequency arrival times; source-sensor distances; Acoustic emission; Acoustic sensors; Frequency estimation; Friction; Least squares methods; Position measurement; Pulse modulation; Sensor arrays; Sensor phenomena and characterization; Surface acoustic waves;
Conference_Titel :
Electrotechnical Conference, 2006. MELECON 2006. IEEE Mediterranean
Conference_Location :
Malaga
Print_ISBN :
1-4244-0087-2
DOI :
10.1109/MELCON.2006.1653120
