Abstract
Validation of non-destructive testing methods is necessary to create a common basis where different systems can be compared and their applications and limitations be identified. This can be achieved through comparing the measurements taken by several systems used for a common diagnostic purpose under practical but controlled testing conditions. Well-designed small and large laboratory or field specimens promise such conditions.
The special concrete specimen (LCS) at BAM was constructed for validation purposes, in particular, to be used for evaluating the performance of echo methods. The thickness of the specimen is varying and it contains carefully designed built-in faults, such as voids, honeycombs and tendon ducts with various degrees of grouting defects. Since the geometry and condition of the defects are known, it can be used to compare the performance of radar, ultrasonic, impact-echo. The research was conducted within the Research group FOR384, sponsored by the German Research Society DFG.
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Beutel, R., Reinhardt, HW., Grosse, C.U. et al. Comparative Performance Tests and Validation of NDT Methods for Concrete Testing. J Nondestruct Eval 27, 59–65 (2008). https://doi.org/10.1007/s10921-008-0037-1
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DOI: https://doi.org/10.1007/s10921-008-0037-1