Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Intestigation of concrete structures with pulse phase thermography
Abstract The applicability of pulse phase thermography (PPT) for the investigation of structures is studied systematically on concrete test specimens and on a plastered sandstone column. In the test specimens, voids and delaminations are implemented in different depths and with different sizes, modelling real voids, honeycombing and debonding. Delaminations of plaster in concrete and masonry and behind tiles on concrete are investigated. PPT is based on the frequency analysis of the cooling down process of actively heated surfaces. Therefore, it is contactless and thus completely non-destructive (if overheating of the surface is prevented), fast and allows the inspection of large surface areas. The interpretation of amplitude and phase images gives semi-quantitative information about the observed defects. The phase images provide a deeper probing up to 10–15 cm in relation to the interpretation of the thermograms and to the amplitude images. In addition, the influence of surface inhomogeneities and non-uniform heating is reduced.
Intestigation of concrete structures with pulse phase thermography
Abstract The applicability of pulse phase thermography (PPT) for the investigation of structures is studied systematically on concrete test specimens and on a plastered sandstone column. In the test specimens, voids and delaminations are implemented in different depths and with different sizes, modelling real voids, honeycombing and debonding. Delaminations of plaster in concrete and masonry and behind tiles on concrete are investigated. PPT is based on the frequency analysis of the cooling down process of actively heated surfaces. Therefore, it is contactless and thus completely non-destructive (if overheating of the surface is prevented), fast and allows the inspection of large surface areas. The interpretation of amplitude and phase images gives semi-quantitative information about the observed defects. The phase images provide a deeper probing up to 10–15 cm in relation to the interpretation of the thermograms and to the amplitude images. In addition, the influence of surface inhomogeneities and non-uniform heating is reduced.
Intestigation of concrete structures with pulse phase thermography
Weritz, F. (Autor:in) / Arndt, R. (Autor:in) / Röllig, M. (Autor:in) / Maierhofer, C. (Autor:in) / Wiggenhauser, H. (Autor:in)
2005
Aufsatz (Zeitschrift)
Englisch
Investigation of concrete structures with pulse phase thermography
| British Library Online Contents | 2005
Investigation of concrete structures with pulse phase thermography
| Tema Archiv | 2003
Intestigation of concrete structures with pulse phase thermography
| Springer Verlag | 2005
Investigation of concrete structures with pulse phase thermography
| Online Contents | 2005
Quantitative pulse-phase-thermography for masonry and concrete structures
| Tema Archiv | 2006