TY - CONF A1 - Mielentz, Frank A1 - Milmann, Boris A1 - Krause, Martin A1 - Müller, W. A1 - Crail, S. T1 - Zerstörungsfreie Risscharakterisierung in Betonbauteilen mit Ultraschall T2 - DGZfP-Berichtsband N2 - Die Risstiefenbestimmung in Festen Fahrbahnen ist hinsichtlich der Dauerhaftigkeit der Konstruktion von wesentlichem Interesse. Im Rahmen eines gemeinsamen Forschungsvorhabens mit der DB AG wurden aus der Literatur bekannte Ansätze bewertet und darauf aufbauend ein Verfahren zur bildgebenden Rissdarstellung entwickelt. Rissüberbrückende Bewehrung sowie Kontaktstellen zwischen den Rissflanken wirken als Schallbrücken und erschweren die Risscharakterisierung, wie bei einem Einsatz an einer Betriebserprobungsstrecke festgestellt wurde. Ein aus der Literatur bekanntes Verfahren der einfachen Laufzeitmessung erwies sich für die Tiefenbestimmung von realen verunreinigten Rissen als ungeeignet. T2 - Fachtagung Bauwerksdiagnose - Praktische Anwendungen Zerstörungsfreier Prüfungen CY - Leipzig, Germany DA - 25.10.2001 PY - 2001 VL - 76-CD SP - 1 EP - 10 PB - Deutsche Gesellschaft für Zerstörungsfreie Prüfung (DGZfP) CY - Berlin AN - OPUS4-1188 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, W. A1 - Veith, Helmut T1 - Elastic plastic finite element analysis of a weld in the ligament of a CT specimen T2 - Mechanical and thermal problems of fusion reactors T2 - International conference on Structural Mechanics in Reactor Technology CY - Brussels, Belgium DA - 1985-08-19 PY - 1985 SN - 0-444-86968-9 SP - 113 EP - 118 PB - North-Holland Publ. Co. CY - Amsterdam AN - OPUS4-33903 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Schmitz, V. A1 - Müller, W. A1 - Krause, Martin A1 - Wiggenhauser, Herbert T1 - Improved Detection of Tendon Ducts and Defects in Concrete Structures Using Ultrasonic Imaging T2 - The Evaluation of Defects, Repair Criteria & Methods of Repair for Concrete Structures on Nuclear Power Plants N2 - At the beginning of the 90s the general opinion was, that ultrasonic inspection methods using pulse-echo technique were not suitable for the inspection of concrete because of the inhomogeneity and the strong scattering behavior of the embedded aggregates. In the meantime the progress in the development of new equipment and inspection strategies in connection with ultrasonic imaging techniques turns the pulse-echo technique into a powerful tool to solve problems related to concrete materials. These imaging techniques - developed for the inspection of homogenous materials like steel of aluminum - could be adopted to the very low frequencies needed for concrete inspections. T2 - Workshop on the Evaluation of Defects, Repair Criteria & Methods of Repair for Concrete Structures on Nuclear Power Plants CY - Berlin, Germany DA - 2002-04-10 PY - 2002 UR - http://publica.fraunhofer.de/documents/N-15451.html VL - 2 SP - 125 EP - 132 PB - NEA CY - Issy-les-Moulineaux AN - OPUS4-1921 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Torge, Manfred A1 - Bücker, Michael A1 - Drachenberg, E. A1 - Müller, W. A1 - Schaaf, U. ED - Roemich, H. ED - Fair, L. T1 - Protection of stained-glass windows - case studies in Poland T2 - Recent Advances in Glass and Ceramics Conservation 2016 N2 - Several restoration projects of stained-glass windows have been performed in Lower Silesia (Poland) since 2010. The aim of the projects was to protect stained-glass windows against environmental impact of industial pollutants and acid rain by installing a protective glazing. The usefulness of protective glazing has been proved by climate measurements and determination of environmental impact before and after installation. T2 - Recent Advances in Glass and Ceramics Conservation 2016, ICOM-CC Working Group “Glass and Ceramics” Interim Meeting CY - The Eugeniusz Geppert Academy of Art and Design, Wrocław, Poland DA - 25.05.2016 KW - weathering KW - stained glass KW - protective glazing KW - glass dosimeters KW - outdoor pollutants PY - 2016 SN - 978-83-64419-80-5 SP - 53 EP - 62 PB - International Council of Museums - Committee for Conservation (ICOM-CC) CY - Paris, France AN - OPUS4-36678 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Treumann, Hartwig A1 - Krüger, Gunhild A1 - Müller, W. A1 - Niems, P. T1 - The explosive properties of binary systems consisting of NaClO3-resp. NaNO3-lactose monohydrate mixtures T2 - Sensitivity and Propagation T2 - Tagung der Arbeitsgruppe "Sensitivity and Propagation" der OECD-IGUS CY - Pittsburgh, PA, USA DA - 1980-01-01 PY - 1980 SP - 2(?) EP - 8(?) AN - OPUS4-9344 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -