Title :
A novel ultrasonic transducer for inspecting concrete
Author :
Andrews, David Richard ; Hughes, Angela Mary
Author_Institution :
Dept. of Electron. & Electr. Eng., King´´s Coll., London, UK
Abstract :
A novel ultrasonic transducer is described with application to inspecting concrete. The design is fundamentally orthodox but incorporates novel materials in the face plate and damping block which allow good coupling and strong damping at relatively low frequencies (typically 250 kHz). In addition, a fast setting mortar is used as a novel coupling material between a transducer and the concrete surface under test. Sensitivity is estimated to be approximately +44 dB better than commercial steel faced transducers. Signal processing enhancement gives an effective bandwidth of 265 kHz
Keywords :
concrete; ultrasonic materials testing; ultrasonic transducers; 265 kHz; concrete; damping block; effective bandwidth; face plate; fast setting mortar; ultrasonic transducer; Bandwidth; Building materials; Concrete; Damping; Frequency; Materials testing; Mortar; Signal processing; Steel; Ultrasonic transducers;
Conference_Titel :
Ultrasonics Symposium, 1991. Proceedings., IEEE 1991
Conference_Location :
Orlando, FL
DOI :
10.1109/ULTSYM.1991.234184
