Quantitative Pulse-Phase-Thermography for Composites and Concrete Structures

  • The active approach for non-destructive-testing in Civil Engineering (NDT-CE) with infraredthermography (IR), developed at the Federal Institute for Materials Research and Testing (BAM), is described in part one of this contribution. The active IR-approach is based on the principles of impulse- (IT) and pulse-phase-thermography (PPT). The concept is a direct result of a research project at the BAM in cooperation with the Technical University of Berlin (TUB) and was funded by the Deutsche Forschungsgemeinschaft (DFG). In the second part results of the new thermography-scanning system (thermo-scanner) of BAM on debonding of multi-layered structures, especially carbon fibre reinforced plates (CFRP) on concrete are presented. Both, the thermo-scanner developed at BAM, and the investigations carried out, are part of the EU-Project Sustainable Bridges. In the third part of the paper the characteristic frequency of the optimum phase-contrast as a means for the characterization of defects’The active approach for non-destructive-testing in Civil Engineering (NDT-CE) with infraredthermography (IR), developed at the Federal Institute for Materials Research and Testing (BAM), is described in part one of this contribution. The active IR-approach is based on the principles of impulse- (IT) and pulse-phase-thermography (PPT). The concept is a direct result of a research project at the BAM in cooperation with the Technical University of Berlin (TUB) and was funded by the Deutsche Forschungsgemeinschaft (DFG). In the second part results of the new thermography-scanning system (thermo-scanner) of BAM on debonding of multi-layered structures, especially carbon fibre reinforced plates (CFRP) on concrete are presented. Both, the thermo-scanner developed at BAM, and the investigations carried out, are part of the EU-Project Sustainable Bridges. In the third part of the paper the characteristic frequency of the optimum phase-contrast as a means for the characterization of defects’ depth in CE by means of PPT is introduced. A new quantitative approach is tested and discussed on concrete structures with defects of polystyrene and gas concrete.zeige mehrzeige weniger

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Metadaten
Autoren/innen:Ralf Arndt, Rosemarie Helmerich, Christiane Maierhofer, Mathias Röllig
Persönliche Herausgeber/innen:M. Forde
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Structural faults & repair 2006 (Proceedings)
Jahr der Erstveröffentlichung:2006
Verlag:Engineering Technics Pr.,
Verlagsort:Edingburgh
Erste Seite:1(?)
Letzte Seite:17(?)
Freie Schlagwörter:Blind / characteristic frequency; CFRP-laminates; Concrete; Debonding; Impulse-thermography; Pulse-phase-thermography; Quantitative NDT; Thermo-scanner; Voids
Veranstaltung:11th International Conference and Exhibiton "Structural Faults and Repair - 2006"
Veranstaltungsort:Edinburgh, Scotland, UK
Beginndatum der Veranstaltung:2006-06-13
Enddatum der Veranstaltung:2006-06-15
ISBN:0-947644-59-8
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Nein