DocumentCode
2989672
Title
Real-time analytic signal processor for ultrasonic nondestructive testing
Author
Duncan, Michael G.
Author_Institution
Martin Marietta Energy Systems Inc., Oak Ridge, TN, USA
fYear
1990
fDate
13-15 Feb 1990
Firstpage
32
Lastpage
37
Abstract
Hilbert transform processors have been developed to improve flaw detection in parts by sensing the rate of total energy arrival. The processor operates in real time by using a single-sideband conversion technique. An upper sideband processor has been built with a transducer bandwidth of 0.5 to 20 MHz and can resolve echoes 90 ns apart. A lower sideband processor has a bandwidth of 2 to 42 MHz and can resolve echoes 60 ns apart
Keywords
computerised signal processing; flaw detection; signal processing equipment; transforms; ultrasonic materials testing; 0.5 to 20 MHz; 2 to 42 MHz; 90 ns; Hilbert transform processors; echoes; flaw detection; real time analytic signal processor; single-sideband conversion; ultrasonic nondestructive testing; upper sideband processor; Acoustic pulses; Acoustic reflection; Acoustic transducers; Bandwidth; Energy resolution; Frequency; Nondestructive testing; Signal analysis; Signal processing; Ultrasonic transducers;
fLanguage
English
Publisher
ieee
Conference_Titel
Instrumentation and Measurement Technology Conference, 1990. IMTC-90. Conference Record., 7th IEEE
Conference_Location
San Jose, CA
Type
conf
DOI
10.1109/IMTC.1990.65954
Filename
65954
Link To Document