caa a22 4500 606172769 CHVBK 20210128100730.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s10921-014-0274-4 doi (NATIONALLICENCE)springer-10.1007/s10921-014-0274-4 Influence of Delamination Characteristics in Carbon Fibre/Epoxy Laminates on Signal Features of Pulse Thermography [Elektronische Daten] [Henrik Schmutzler, Alejandro Garcia, Narumichi Sato, Hans Wittich, Masaaki Nishikawa, Hermann Rohling, Masaki Hojo, Karl Schulte, Bodo Fiedler] Carbon fibre reinforced polymer specimens were used in double cantilever beam tests in order to investigate the influence of delamination characteristics on multiple signal features extracted from active thermography data. During mechanical loading, delamination opening and growth were induced, allowing controlled setting of different configurations. In addition to the standardised specimens, specimen geometries were altered to investigate delamination depth and influences from two overlapping delaminations in different depths. The thermography data was obtained from a measurement where the specimens were subjected to a rectangular long pulse emitted from a halogen light. From the data various signal features were extracted. Correlations between signal features such as phase angle difference and delamination opening were investigated. Furthermore, a comparison of the relation between extracted features allowed identifying different sections of the delamination, proving the methods applicability as a detailed classification tool. Due to the high number of features extracted robustness is increased. Springer Science+Business Media New York, 2014 Infrared thermography nationallicence FRP (fiber reinforced) plastic nationallicence Defects nationallicence Signal processing nationallicence Schmutzler Henrik Institute of Polymers and Composites, Hamburg University of Technology, Nesspriel 5, 21129, Hamburg, Germany aut Garcia Alejandro Department of Telecommunications, Hamburg University of Technology, Eißendorfer Str. 40, 21073, Hamburg, Germany aut Sato Narumichi Institute of Polymers and Composites, Hamburg University of Technology, Nesspriel 5, 21129, Hamburg, Germany aut Wittich Hans Institute of Polymers and Composites, Hamburg University of Technology, Nesspriel 5, 21129, Hamburg, Germany aut Nishikawa Masaaki Department of Mechanical Engineering and Science, Kyoto University, Nishikyo-ku, 615-8540, Kyoto, Kyoto, Japan aut Rohling Hermann Department of Telecommunications, Hamburg University of Technology, Eißendorfer Str. 40, 21073, Hamburg, Germany aut Hojo Masaki Department of Mechanical Engineering and Science, Kyoto University, Nishikyo-ku, 615-8540, Kyoto, Kyoto, Japan aut Schulte Karl Institute of Polymers and Composites, Hamburg University of Technology, Nesspriel 5, 21129, Hamburg, Germany aut Fiedler Bodo Institute of Polymers and Composites, Hamburg University of Technology, Nesspriel 5, 21129, Hamburg, Germany aut Journal of Nondestructive Evaluation Springer US; http://www.springer-ny.com 34/1(2015-03-01), 1-10 0195-9298 34:1<1 2015 34 10921 https://doi.org/10.1007/s10921-014-0274-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10921-014-0274-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Schmutzler Henrik Institute of Polymers and Composites, Hamburg University of Technology, Nesspriel 5, 21129, Hamburg, Germany aut NATIONALLICENCE 700 1- Garcia Alejandro Department of Telecommunications, Hamburg University of Technology, Eißendorfer Str. 40, 21073, Hamburg, Germany aut NATIONALLICENCE 700 1- Sato Narumichi Institute of Polymers and Composites, Hamburg University of Technology, Nesspriel 5, 21129, Hamburg, Germany aut NATIONALLICENCE 700 1- Wittich Hans Institute of Polymers and Composites, Hamburg University of Technology, Nesspriel 5, 21129, Hamburg, Germany aut NATIONALLICENCE 700 1- Nishikawa Masaaki Department of Mechanical Engineering and Science, Kyoto University, Nishikyo-ku, 615-8540, Kyoto, Kyoto, Japan aut NATIONALLICENCE 700 1- Rohling Hermann Department of Telecommunications, Hamburg University of Technology, Eißendorfer Str. 40, 21073, Hamburg, Germany aut NATIONALLICENCE 700 1- Hojo Masaki Department of Mechanical Engineering and Science, Kyoto University, Nishikyo-ku, 615-8540, Kyoto, Kyoto, Japan aut NATIONALLICENCE 700 1- Schulte Karl Institute of Polymers and Composites, Hamburg University of Technology, Nesspriel 5, 21129, Hamburg, Germany aut NATIONALLICENCE 700 1- Fiedler Bodo Institute of Polymers and Composites, Hamburg University of Technology, Nesspriel 5, 21129, Hamburg, Germany aut NATIONALLICENCE 773 0- Journal of Nondestructive Evaluation Springer US; http://www.springer-ny.com 34/1(2015-03-01), 1-10 0195-9298 34:1<1 2015 34 10921