Guided wave evaluation techniques for testing of plate-like concrete structures

Tofeldt, Oskar; University West; Sweden

Tofeldt, O.; University West; Sweden
Ryden, N.; Lund University; Sweden

ID: ECNDT-0130-2018
Download: PDF
Session: Civil Infrastructure-Concrete 1
Room: J1
Date: 2018-06-13
Time: 10:00 - 10:20

There is a growing need for non-destructive techniques capable of investigating civil-engineering structures of concrete material. The Impact-Echo (IE) method is one such technique based on the study of a resonant and stationary mode. This mode corresponds to a Lamb mode. In turn, this accentuates that the IE method can easily be extended to include the analysis of propagating Lamb modes as well. Thereby a quantitative evaluation of the elastic plate properties and thickness is possible. Moreover, the use of Lamb waves lay the foundations for extended analysis which makes measurements based on an extension of the IE method an attractive complement to current ultrasonic techniques for plate-like concrete structures.