1. Upper Austrian Research GmbH

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    1. Mentioned In 18 Articles

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

      Spatially Resolved Stress Measurements in Materials With Polarisation-Sensitive Optical Coherence Tomography: Image Acquisition and Processing Aspects
      ... bases for a quantitative whole-field evaluation of the internal stress state of samples under investigation. Upper Austrian Research GmbH, Hafenstrasse 47-51, 4020 Linz, Austria FLLL – Department of Knowledge-Based Math...
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    3. Applicability of Optical Coherence Tomography at 1.55 μm to the Examination of Oil Paintings

      Applicability of Optical Coherence Tomography at 1.55 μm to the Examination of Oil Paintings
      With 47 samples of commercially available oil paints, the applicability of Optical coherence tomography to noninvasive tomography of paint layers was examined. Two different instruments, utilizing near-infrared light with central wavelength of 823nm and, for the first time, 1.55 μm, were used to obtain cross-sectional images. Example tomograms are given; a ray tracing correction of images is also discussed. The tests revealed that applicability of OCT is limited to ...
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    4. An investigation of the accelerated thermal degradation of different epoxy resin composites using x-ray micro computed tomography and optical coherence tomography

      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 ...
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    5. Imaging the human retina in vivo with combined spectral-domain polarization-sensitive optical coherence tomography and scanning laser ophthalmoscopy

      Polarization-sensitive (PS) optical coherence tomography (OCT) allows for depth-resolved measurement of light polarizing properties of different layers in the human retina. Since their inherent polarizing properties are different, the retinal structures can be identified using PS-OCT. We present an ... [Proc. SPIE 7163, 71630N (2009)] published Wed Feb 18, 2009.
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    6. Spatially Resolved Stress Measurements in Materials with Polarisation-Sensitive Optical Coherence Tomography: Image Acquisition and Processing Aspects

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

      ...technique. Investigation of polymer and polymer/fibre composite materials with optical coherence tomography 1 Upper Austrian Research GmbH, Hafenstrasse 47-51, 4020 Linz, Austria 2 Upper Austrian University of Applied Sc...
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    8. Ultrahigh-Resolution Transversal Polarization-Sensitive Optical Coherence Tomography: Structural Analysis and Strain-Mapping

      ...nology GmbH, Koepenicker Str. 325, 12555 Berlin, Germany Eurocopter Deutschland GmbH, 81663 München, Germany Upper Austrian Research GmbH, Hafenstr. 47 - 51, 4020 Linz, Austria Optical coherence tomography (OCT), origin...
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    9. Beyond biomedicine: a review of alternative applications and developments for optical coherence tomography

      ...omedicine: a review of alternative applications and developments for optical coherence tomography D. Stifter1 Upper Austrian Research GmbH, Hafenstraße 47–51, 4020 Linz, Austria Optical coherence tomography (OCT), a met...
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    10. Investigation of glass–fibre reinforced polymers by polarisation-sensitive, ultra-high resolution optical coherence tomography: Internal structures, defects and stress

      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 ...
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    11. Transversal ultrahigh-resolution polarization-sensitive optical coherence tomography for strain mapping in materials

      Transversal ultrahigh-resolution polarization-sensitive optical coherence tomography for strain mapping in materials
      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 ...
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    12. Supercontinuum generation system for optical coherence tomography based on tapered photonic crystal fibre

      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.
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    13. 1-15 of 18 1 2 »
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  2. About Upper Austrian Research GmbH

    Upper Austrian Research GmbH

    Upper Austrian Research GmbH is a non-profit research institution dedicated to transfer knowledge from science to industry. OCT activities at UAR.   It is the vision of the UAR to bundle and significantly strengthen research and development in Upper Austria, thereby allowing companies of all sizes to profit from customized high tech solutions.  The UAR has set itself the goal of boosting the transfer of technology between the realms of science and economy. Working together with interested companies, the UAR will target promising results in research for enhancement to create new technologies, products and services.