Mapping Voids, Debonding, Delaminations, Moisture, and Other Defects Behind or Within Tunnel Linings (2013) / Chapter Skim
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Pages 41-42
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41 a p p e N D I x e accuracy The ultrasonic echo equipment used in this research study is commercially available. It is the A1220 Monolith developed by Acoustic Control Systems, in cooperation with the Federal Institute for Materials Research and Testing (BAM)
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From page 42... ...
42 such as poor repeatability and/or inconsistency of measurements, as well as delays from displacing and reinstalling the transducers. Mounting the ultrasonic device on a scanning system accelerates the measurement process and greatly enhances the repeatability and consistency of the results.
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