Abstract
A non-destructive investigation technique for bonding evaluation in external FRP strengthenings is presented. The technique is similar to the usual pulsed echo ultrasonic analyses, but bonding defects are located through the amplitude of the reflection echo rather than its delay time. This new technique has been experimentally demonstrated to be rather unaffected by variations in glue thickness, very common in FRP strengthenings of concrete and masonry structures. The effectiveness of the proposed technique has been then successfully tested with different composite materials (CFRP and GFRP), applied to different substrates (concrete, masonry, polyurethane). A theoretical model of the principle of operations has also been developed. Such a technique appears useful for both quality control of the application and in situ surveying.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
