TY - CONF A1 - Mayer, K. A1 - Langenberg, K.-J. A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Milmann, Boris A1 - Kohl, Christoph T1 - Characterization of ultrasonic and radar reflector types in concrete by phase evaluation of the signal and the reconstructed image T2 - 9th European Conference on NDT T2 - 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 KW - NDT-CE KW - Ultrasonic echo KW - Radar KW - Phase evaluation KW - Modeling of wave propagation KW - Reconstruction calculation PY - 2006 SN - 3-931381-86-2 SP - 1 EP - 8(?) PB - European Federation for Non-Destructive Testing CY - Berlin AN - OPUS4-14225 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Martin A1 - Gräfe, Boris A1 - Mielentz, Frank A1 - Milmann, Boris A1 - Friese, Martin A1 - Wiggenhauser, Herbert A1 - Mayer, K. ED - M.G. Alexander, ED - H.-D. Beushausen, ED - F. Dehn, ED - P. Moyo, T1 - Ultrasonic imaging of post-tensioned concrete elements: New techniques for reliable localization of grouting defects T2 - Proceedings of the international conference on concrete repair, rehabilitation and retrofitting II T2 - 2nd International Conference on Concrete Repair, Rehabilitation and Retrofitting CY - Cape Town, South Africa DA - 2008-11-24 KW - Post-tensioned concrete KW - Ultrasonic echo KW - Phase evaluation KW - Air-coupled ultrasound PY - 2009 SN - 978-0-415-46850-3 SP - 521 EP - 527 PB - CRC Press CY - Boca Raton AN - OPUS4-20651 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -