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Schlobohm, Jochen [Author]; Li, Yinan [Author]; Pösch, Andreas [Author]; Langmann, Benjamin [Author]; Kästner, Markus [Author]; Reithmeier, Eduard [Author]

Multiscale optical inspection systems for the regeneration of complex capital goods - [published Version]

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  • Media type: Text; E-Article
  • Title: Multiscale optical inspection systems for the regeneration of complex capital goods
  • Contributor: Schlobohm, Jochen [Author]; Li, Yinan [Author]; Pösch, Andreas [Author]; Langmann, Benjamin [Author]; Kästner, Markus [Author]; Reithmeier, Eduard [Author]
  • Published: Amsterdam : Elsevier, 2014
  • Published in: Proceedings of the 3rd International Conference in Through-life Engineering Services, 4-5 November 2013 ; Procedia CIRP 22 (2014)
  • Issue: published Version
  • Language: English
  • DOI: https://doi.org/10.15488/920; https://doi.org/10.1016/j.procir.2014.07.019
  • Keywords: Projection systems ; Geometry ; Inspection ; Konferenzschrift ; White light interferometer ; White-light interferometer ; Optical testing ; Fringe projection ; Mulstiscale ; Optical data processing ; Borescope ; Michelson interferometers ; Interferometry ; Measurements ; Computer generated holography ; Metrology ; Inline measurement ; Interferometers ; Inspection equipment ; Michelson interferometer
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  • Description: The inspection of capital goods with complex geometries is a challenging task due to the limited maneuvering and measuring space available. We developed a set of optical measurement systems for the inline inspection of such machines and capital goods. At first we introduce a borescopic fringe projection system based on of-the-shelf components. It is capable of detecting geometric variances in hard to reach areas, e.g. inside machines or in between parts with highly complex geometries like blade integrated discs (blisks). Single parts like compressor blades are measured with an inverse fringe projection system, which uses fully adaptable fringe patterns. The adaptable patterns lead to a high sensitivity and high speed. Results can be achieved with only one fringe pattern per measurement. In order to perform microscopic measurements and surface characterizations, we use a michelson interferometer with advanced 3D reconstruction algorithms to detect microscopic variances of the objects surface. These newly developed algorithms lead to higher sensitivity and improved results. Together these three inspection systems enable us to detect and to quantify geometric defects or variances of different industrial parts. Based on this information the prediction of the reliability of a part can be improved and the lifetime of an industrial part can be extended leading to a reduction of maintenance costs. ; DFG/SFB/871
  • Access State: Open Access
  • Rights information: Attribution - Non Commercial - No Derivs (CC BY-NC-ND)