Active Thermography for Quantitative Analysis of Defects in Composites
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Günther Hendorfer
Abstract
The method of Pulsed Thermography has been used for the investigation of carbon as well as glass fibres reinforced plastics. We have studied material properties like porosity and density, on the one hand, and defects, on the other hand. The defects under investigation have been inclusions of foreign materials. Test samples with simple geometries as well as components with complex geometries have been surveyed. In the case of complex geometries, Finite-Element-Simulations have been performed additionally and used to interpret the experimental data with respect to geometry effects.
Kurzfassung
Die Methode der Puls-Thermografie wurde zur Untersuchung von Verbundwerkstoffen herangezogen. Wir haben einerseits Materialeigenschaften wie die Porosität oder die Dichte, andererseits aber auch Defekte untersucht. Bei den Defekten handelte es sich um Fremdmaterialeinschlüsse. Neben Testproben mit einfachen Geometrien wurden auch Bauteile mit komplexen Formen untersucht. Dabei wurden die Einflüsse der Geometrie auf die Ergebnisse mit Hilfe von Finite-Element-Simulationen korrigiert.
References
1 X.Maldague: Theory and practice of infrared technology for nondestructive testing. Wiley and Sons Inc. NY (2001)Suche in Google Scholar
2 N. P.Avdelidis, D. P.Almond, A.Dobbinson, B. C.Hawtin, C.Ibarra-Castanedo, and X.Maldague: Aircraft composites assessment by means of transient thermal NDT. Progress in Aerospace Sciences40 (2004) 143–162Suche in Google Scholar
3 X.Maldague, E.Barker, A.Nouah, E.Boisvert, D.Dufort, L.Fortin, and L.Laurendeau. On methods for shape correction and reconstruction in thermographic NDE. Proc. Advances in Signal Processing for Nondestructive Evaluation of Materials, (1994), pp. 209–224Suche in Google Scholar
4 G.Hendorfer, G.Mayr, and E.Schlotthauer: Pulsed thermography applied to components with complex shape. AIP Conference Proceedings, 975 (2008), pp. 950–957Suche in Google Scholar
5 G.Mayr, B.Dietermayr, G.Hendorfer, and J.Sekelja: Characterization of defects in curved CFRP samples using pulsed thermography and 3D Finite Element Simulation. Proc. 9th International Conference on Quantitative InfraRed Thermography, (2008), pp. 447–454Suche in Google Scholar
6 I. N.Bronstein: Taschenbuch der Mathematik. Verlag Harry Deutsch, Frankfurt (1978)Suche in Google Scholar
7 G.Mayr, G.Hendorfer, G.Zauner, and F.Puchberger: A fast and robust method for determining thermal diffusivity images in complex geometries. Proc. Emerging Technologies in Non-Destructive Testing, (2008), pp. 179–185Suche in Google Scholar
8 W. J.Parker, W. J.Jenkins, C. P.Butler and G. L.Abbott: Flash method of determining thermal diffusivity, heat capacity and thermal conductivity. Journal of Applied Physics32 (1961), pp. 1679–168410.1063/1.1728417Suche in Google Scholar
9 G. A.Ciliberto, G.Cavaccini, O.Salvetti, M.Chimenti, L.Azzarelli, P. G.Bison, S.Marinetti, A.Freda, and E.Grinzato: Porosity detection in composite aeronautical structures. Infrared Physics & Technology43 (2002), pp. 139–143Suche in Google Scholar
10 H. I.Ringermacher, D. R.Howard, and R. S.Gilmore: Discriminating porosity in composites using thermal depth imaging. AIP Conference Proceedings, 615, (2002), pp. 528–535Suche in Google Scholar
© 2009, Carl Hanser Verlag, München
Artikel in diesem Heft
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Preface
- Cyclic Softening Behaviour of a Duplex Stainless Steel
- Cyclic Softening Behaviour of a Duplex Stainless Steel
- Microstructural Changes in a Duplex Stainless Steel During Low Cycle Fatigue*
- LCF Mechanisms of the 25 Cr 7 Ni 0.25 N Duplex Stainless Steel Investigated by Atomic Force Microscopy*
- Fatigue Life Calculation of Metastable Austenitic Stainless Steels on the Basis of Magnetic Measurements*
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- Für die Bestimmung nicht metallischer Einschlüsse in Stählen mit Richtreihenbildern gilt jetzt DIN EN 10247:2007-07
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- Design Optimization of the Central Distance of Two Holes in a Plate for Different Types of Materials and Laminates
- Active Thermography for Quantitative Analysis of Defects in Composites
- Computed Tomography Metrology in Industrial Research and Development
- Vorschau/Preview
- Vorschau
Artikel in diesem Heft
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Preface
- Cyclic Softening Behaviour of a Duplex Stainless Steel
- Cyclic Softening Behaviour of a Duplex Stainless Steel
- Microstructural Changes in a Duplex Stainless Steel During Low Cycle Fatigue*
- LCF Mechanisms of the 25 Cr 7 Ni 0.25 N Duplex Stainless Steel Investigated by Atomic Force Microscopy*
- Fatigue Life Calculation of Metastable Austenitic Stainless Steels on the Basis of Magnetic Measurements*
- On the Cyclic Behaviour of Fusion Reactor Ferritic-Martensitic Steels at Intermediate Temperatures*
- Für die Bestimmung nicht metallischer Einschlüsse in Stählen mit Richtreihenbildern gilt jetzt DIN EN 10247:2007-07
- Deformation Character of the Aluminum Alloy AA 6063 Depending on the Homogenization State
- Design Optimization of the Central Distance of Two Holes in a Plate for Different Types of Materials and Laminates
- Active Thermography for Quantitative Analysis of Defects in Composites
- Computed Tomography Metrology in Industrial Research and Development
- Vorschau/Preview
- Vorschau
