Title :
Spectrogram remapping based imaging for spiral shaped frequency steerable acoustic transducers
Author :
Baravelli, Emanuele ; De Marchi, Luca ; Ruzzene, Massimo ; Speciale, Nicolò
Author_Institution :
Sch. of Aerosp. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Guided Wave based Structural Health Monitoring greatly benefits from directional scanning. In contrast with conventional phased array approaches, the novel frequency-based beam steering concept and the associated signal processing presented in this work enable imaging of two-dimensional (2D) areas through the output of a single, dual-channel sensor.
Keywords :
condition monitoring; ultrasonic imaging; ultrasonic transducers; conventional phased array approach; directional scanning; guided wave; signal processing; spectrogram remapping based imaging; spiral shaped frequency steerable acoustic transducer; structural health monitoring; Acoustic transducers; Acoustics; Frequency domain analysis; Imaging; Monitoring; Spectrogram;
Conference_Titel :
Ultrasonics Symposium (IUS), 2011 IEEE International
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1253-1
DOI :
10.1109/ULTSYM.2011.0237
