TY - CONF A1 - Müller, Jan P. A1 - Krankenhagen, Rainer T1 - Ein Blick unter die Oberfläche von Windkraftanlagen durch Thermografie N2 - Rotorblätter von Windkraftanlagen sind hohen Belastungen ausgesetzt. Nach Jahren der Nutzung können Klebeverbindungen unter der Oberfläche versagen. Thermografie soll die Zustandsüberwachung während der gesamten Lebensdauer verbessern. N2 - Rotor blades of wind power generators are subject to high strains. After years of use, adhesive bonds under the surface may fail. Thermography is intended to improve condition monitoring during the entire service life. T2 - Hannover Messe 2019 CY - Hanover, Germany DA - 1.4.2019 KW - Wiederkehrende Prüfung KW - Thermografie KW - Klebeverbindungen KW - Rotorblatt KW - GFK PY - 2019 AN - OPUS4-49160 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Jan P. A1 - Dell'Avvocato, G. A1 - Krankenhagen, Rainer T1 - Applying a two-layer quadrupole model for quantitative thermography at overload-induced delaminations in GFRP N2 - The applicability of 1D-quadrupole-model on the depth estimation of overload-induced delaminations is tested in this contribution. While classical 1D-methods like Pulsed Phase Transformation and Thermographic Signal Reconstruction determine the depth of a defect by one parameter, a two-layer quadrupole model provides two parameters: depth and thermal resistance. In addition, the convectional losses at the surfaces may be considered. The defect investigated is a large-scale delamination in glass fibre reinforced polymer generated by tension overload. T2 - Advanced Infrared Technology & Applications (AITA) CY - Florenz, Italy DA - 16.9.2019 KW - Aktive Thermographie KW - Nicht-lineare Regression KW - 1D-Simulation KW - GFK PY - 2019 AN - OPUS4-49133 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -