Karin Wiesauer

1. Mentioned In 12 Articles

2. An investigation of the accelerated thermal degradation of different epoxy resin composites using x-ray micro computed tomography and optical coherence tomography

   Explore Article ScienceDirect (Jun 27 2009) NDE/NDT

   Epoxy resin composites reinforced with hollow glass microspheres, microlight microspheres, 3D parabeam glass, and E-Glass individually were subjected to accelerated thermal degradation conditions. X-ray micro computed tomography (XμCT) was used to evaluate density changes, reinforcement filler damage, homogeneity, cracks and microcracks in the bulk of the different epoxy resin composites. XμCT 3D images, 2D reconstructed images and voids calculations revealed microspheres damage, filler distributions and showed cracks in all composites ... (Read Full Article)
   

   Comment on Article Mentions:   Upper Austrian Research GmbH   David Stifter   Karin Wiesauer

3. Masmicro micro-/nano-materials processing, analysis, inspection and materials knowledge management

   Explore Article SpringerLink Home (Jun 4 2009) NDE/NDT

   Abstract  The main goals of the ‘Material Innovation and Testing’ within MASMICRO are the identification of the miniature/micro-materials which are formable, development of new materials for forming and machining, development of an integrated material-testing system and study of material properties for design/analysis applications. Examples of collaborative work and results are presented regarding the processing of functional electrospun polymer micro-/nano-fibre structures and the characterization of their interface properties with tribological testing. By ... (Read Full Article)
   

   Comment on Article Mentions:   Upper Austrian Research GmbH   David Stifter   Karin Wiesauer

4. Spatially Resolved Stress Measurements in Materials with Polarisation-Sensitive Optical Coherence Tomography: Image Acquisition and Processing Aspects

   Explore Article www3.interscience.wiley.com (Dec 21 2008) NDE/NDT

   Abstract: We demonstrate that polarisation-sensitive optical coherence tomography (PS-OCT) is suitable for mapping the stress distribution within materials in a contact-free and non-destructive way. In contrast to transmission photoelasticity measurements, the samples do not have to be transparent but can be of scattering nature. Denoising and analysis of fringe patterns in single PS-OCT retardation images are demonstrated to be the bases for a quantitative whole-field evaluation of the internal stress ... (Read Full Article)
   

   Comment on Article Mentions:   Christoph K. Hitzenberger   Michael Pircher   Medical University of Vienna

5. Advanced Optical Coherence Tomography techniques: novel and fast imaging tools for non-destructive testing

   Explore Article NDT Database & The e (Oct 25 2008) NDE/NDT

   ...ce Tomography techniques: novel and fast imaging tools for non-destructive testing David STIFTER 1, Karin WIESAUER 1, Martin WURM 1, Elisabeth LEISS 1, Michael PIRCHER 2, Erich GÖTZINGER 2, Bernhard BAUMANN 2, Chri... (Read Full Article)
   

   Comment on Article Mentions:   Christoph K. Hitzenberger   Michael Pircher   Medical University of Vienna

6. Investigation of polymer and polymer/fibre composite materials with optical coherence tomography

   Explore Article Institute of Physics (May 22 2008) NDE/NDT

   Optical coherence tomography (OCT), a technique originally proposed for applications in the field of biomedical diagnostics, is shown to be an efficient measurement technique for a multitude of problems posed in technical engineering and material research. Especially advanced OCT modifications, involving ultrahigh-resolution (UHR) imaging and fast Fourier-domain (FD) techniques, show promising potential, as successfully demonstrated in this paper by a variety of applications from the field of polymer materials. Thin ... (Read Full Article)
   

   Comment on Article Mentions:   Medical University of Vienna   Upper Austrian Research GmbH   Christoph K. Hitzenberger

7. Ultrahigh-Resolution Transversal Polarization-Sensitive Optical Coherence Tomography: Structural Analysis and Strain-Mapping

   Explore Article SpringerLink Home (Jan 11 2008) NDE/NDT

   Abstract Optical coherence tomography (OCT), originally developed and so far nearly exclusively used for biomedical applications (e.g., [1,2]), is a contact-free, non-destructive technique based on low-coherence interferometry to image structures within translucent and turbid materials. Commonly, cross-sectional reflectivity images with a depth-resolution determined by the coherence length of the near-infrared light source are obtained. When OCT is performed in a polarization sensitive way (PS-OCT), additional information about birefringence within a ... (Read Full Article)
   

   Comment on Article Mentions:   Upper Austrian Research GmbH   Christoph K. Hitzenberger   David Stifter

8. Spectral-Domain Optical Coherence Tomography: a Novel and Fast Tool for NDT

   Explore Article NDT Database & The e (Nov 5 2007) NDE/NDT

   Spectral-domain Optical Coherence Tomography (SD-OCT) is a new, promising variant of OCT, providing superior sensitivity and measurement speed for cross-sectional imaging of turbid materials. OCT, originally developed for applications in the field of biomedical diagnostics, has shown high potential for other non-biomedical investigation tasks, e.g. within the field of non-destructive testing (NDT) and contactless material characterization. However, mostly standard OCT techniques have been used for these applications. Therefore, we demonstrate ... (Read Full Article)
   

   Comment on Article Mentions:   Christoph K. Hitzenberger   Michael Pircher   Medical University of Vienna

9. Investigation of glass–fibre reinforced polymers by polarisation-sensitive, ultra-high resolution optical coherence tomography: Internal structures, defects and stress

   Explore Article ScienceDirect (May 22 2007) NDE/NDT

   In this paper, we report on optical coherence tomography (OCT) for the investigation of glass–fibre reinforced polymer (GFRP) materials. OCT, a contactless and non-destructive imaging technique, provides depth-resolved information on internal structures within semi-transparent materials. In our study, we apply a highly advanced OCT technique: we use a transversal scanning, ultra-high resolution, polarisation-sensitive (UHR-PS)-OCT for the analysis of various GFRP samples. UHR-imaging with resolution in the micron range is shown ... (Read Full Article)
   

   Comment on Article Mentions:   Christoph K. Hitzenberger   Michael Pircher   Medical University of Vienna

10. Transversal ultrahigh-resolution polarizationsensitive optical coherence tomography for strain mapping in materials

    Explore Article opticsinfobase.org (Jun 26 2006) NDE/NDT

    Optical coherence tomography (OCT) and its extension, polarization-sensitive (PS-)OCT, are techniques for contactless and non-destructive imaging of internal structures. In this work, we apply PS-OCT for material characterization. We use a transversal scanning, ultra-high resolution (UHR-)PS-OCT setup providing cross-sectional as well as in-plane information about the internal microstructure, the birefringence and the orientation of the optical axis within the material. We perform structural analysis and strain-mapping for different samples: we ... (Read Full Article)
    

    Comment on Article Mentions:   Christoph K. Hitzenberger   Michael Pircher   Medical University of Vienna

11. Supercontinuum generation system for optical coherence tomography based on tapered photonic crystal fibre

    Explore Article opticsinfobase.org (Feb 20 2006) Broadband Sources

    We report smooth and broad continuum generation using a compact femtosecond Ti:Sapphire laser as a pump source and a tapered photonic crystal fibre as a nonlinear element. Spectral output is optimised for use in optical coherence tomography, providing a maximum longitudinal resolution of 1.5 µm in free space at 809 nm centre wavelength without use of additional spectral filtering. (Read Full Article)
    

    Comment on Article Mentions:   Upper Austrian Research GmbH   David Stifter   Karin Wiesauer

12. Non-destructive quantification of internal stress in polymer materials by polarisation sensitive optical coherence tomography

    Explore Article ScienceDirect (Apr 7 2005) NDE/NDT

    Polarisation sensitive optical coherence tomography (PS-OCT) is an interferometric technique to determine and map the internal birefringence properties of translucent and turbid samples. Because of its non-destructive character, PS-OCT is an ideal method for material characterisation and testing. When birefringence patterns induced by mechanical strain are analysed, information about the stress within a material can be obtained. In this work, we investigate the stress in polymer samples using PS-OCT. From ... (Read Full Article)
    

    Comment on Article Mentions:   Christoph K. Hitzenberger   Michael Pircher   Medical University of Vienna

13. En-face scanning optical coherence tomography with ultra-high resolution for material investigation

    Explore Article opticsinfobase.org (Feb 7 2005) NDE/NDT , Other Non-Medical

    ...En-face scanning optical coherence tomography with ultra-high resolution for material investigation Karin Wiesauer, Michael Pircher, Erich Götzinger, Siegfried Bauer, Rainer Engelke, Gisela Ahrens, Gabi Grütz... (Read Full Article)
    

    Comment on Article Mentions:   Christoph K. Hitzenberger   Medical University of Vienna   Upper Austrian Research GmbH

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