An ultrasonic array-based system for real-time inspection of carbon-epoxy composite plates

A real-time ultrasonic imager operating at a frequency of 3.5 MHz to test composites in immersion has been developed. It is based on linear array transducers and provides either B-scan or transmission images of composite plates of a few centimeters thickness. The electronic scanning has a pitch of 1...

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Veröffentlicht in:NDT & E international : independent nondestructive testing and evaluation 1994-12, Vol.27 (6), p.311-315
Hauptverfasser: Lethiecq, M., Pejot, C., Berson, M., Guillemet, P., Roncin, A.
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container_end_page 315
container_issue 6
container_start_page 311
container_title NDT & E international : independent nondestructive testing and evaluation
container_volume 27
creator Lethiecq, M.
Pejot, C.
Berson, M.
Guillemet, P.
Roncin, A.
description A real-time ultrasonic imager operating at a frequency of 3.5 MHz to test composites in immersion has been developed. It is based on linear array transducers and provides either B-scan or transmission images of composite plates of a few centimeters thickness. The electronic scanning has a pitch of 1.25 mm and an amplitude of 80 mm, and the electronic focusing as well as the acoustic lens on the arrays are set to work at a depth of 40 mm in water. Tests made on composite and plastic plates of 5 to 17 mm thickness show that the system allows the detection of different types of defects and that the interpretation of the ultrasonic signals can be performed on line.
doi_str_mv 10.1016/0963-8695(94)90212-7
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subjects Applied sciences
array transducers
composites
Exact sciences and technology
Industrial metrology. Testing
Mechanical engineering. Machine design
Mechanical properties
Non-destructive testing: methods and equipments
Physical properties
Polymer industry, paints, wood
Properties and testing
Technology of polymers
ultrasonic imaging
title An ultrasonic array-based system for real-time inspection of carbon-epoxy composite plates
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