Auflistung nach Schlagwort "Fringe projection"

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  • 2D refractive index field measurements in air in different pressure scenarios 
    Beermann, Rüdiger; Quentin, Lorenz; Reithmeier, Eduard; Kästner, Markus (Bellingham, Wash. : SPIE, 2018)
    The optical geometry characterization of wrought hot components can help to quantify material distortion effects during air-cooling. The component's shrinkage behavior is affected by inhomogeneous heat dissipation due to ...
  • 3D geometry measurement of hot cylindric specimen using structured light 
    Quentin, Lorenz; Beermann, Rüdiger; Pösch, Andreas; Reithmeier, Eduard; Kästner, Markus (Bellingham, Wash. : SPIE, 2017)
    We present a fringe projection system to measure glowing hot hybrid components in between production processes. For this a high power green light projector, based on TI DLP technology, is used to create the highest possible ...
  • Advanced Characterization Techniques for Turbine Blade Wear and Damage 
    Schlobohm, Jochen; Bruchwald, Oliver; Frąckowiak, Wojciech; Li, Yinan; Kästner, Markus; Pösch, Andreas; Reimche, Wilfried; Maier, Hans Jürgen; Reithmeier, Eduard (Amsterdam [u.a.] : Elsevier, 2017)
    This paper presents four complementary non-destructive measurement techniques for material characterization and damage detection of turbine blades. The techniques are macroscopic fringe projection with inverse fringe ...
  • Comparison of LASER and LED illumination for fiber optic fringe projection 
    Matthias, Steffen; Kästner, Markus; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 2016)
    The inspection of functional elements is a crucial part of modern production cycles. However, with higher integration of production machinery and products, the accessibility for measurement systems is more and more limited. ...
  • Endoscopic fringe projection for in-situ inspection of a sheet-bulk metal forming process 
    Matthias, Steffen; Kästner, Markus; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 2015)
    Sheet-bulk metal forming is a new production process capable of performing deep-drawing and massive forming steps in a single operation. However, due to the high forming forces of the forming process, continuous process ...
  • Fast in-situ tool inspection based on inverse fringe projection and compact sensor heads 
    Matthias, Steffen; Kästner, Markus; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 2016)
    Inspection of machine elements is an important task in production processes in order to ensure the quality of produced parts and to gather feedback for the continuous improvement process. A new measuring system is presented, ...
  • Fiber-optic fringe projection with crosstalk reduction by adaptive pattern masking 
    Matthias, Steffen; Kästner, Markus; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 2017)
    To enable in-process inspection of industrial manufacturing processes, measuring devices need to fulfill time and space constraints, while also being robust to environmental conditions, such as high temperatures and ...
  • Fringe Projection Profilometry in Production Metrology: A Multi-Scale Comparison in Sheet-Bulk Metal Forming 
    Hinz, Lennart; Metzner, Sebastian; Müller, Philipp; Schulte, Robert; Besserer, Hans-Bernward; Wackenrohr, Steffen; Sauer, Christopher; Kästner, Markus; Hausotte, Tino; Hübner, Sven; Nürnberger, Florian; Schleich, Benjamin; Behrens, Bernd-Arno; Wartzack, Sandro; Merklein, Marion; Reithmeier, Eduard (Basel : MDPI, 2021)
    Fringe projection profilometry in combination with other optical measuring technologies has established itself over the last decades as an essential complement to conventional, tactile measuring devices. The non-contact, ...
  • Metal forming tool monitoring based on a 3D measuring endoscope using CAD assisted registration 
    Hinz, Lennart; Kästner, Markus; Reithmeier, Eduard (Basel : MDPI AG, 2019)
    In order to provide timely, reliable, and comprehensive data for the maintenance of highly stressed geometries in sheet-bulk metal forming tools, this article features a possible setup by combining a 3D measuring endoscope ...
  • Multiscale optical inspection systems for the regeneration of complex capital goods 
    Schlobohm, Jochen; Li, Yinan; Pösch, Andreas; Langmann, Benjamin; Kästner, Markus; Reithmeier, Eduard (Amsterdam : Elsevier, 2014)
    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 ...
  • On the development of a low-cost rigid borescopic fringe projection system 
    Schlobohm, Jochen; Pösch, Andreas; Kästner, Markus; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 2015)
    Examining the geometry of complex industrial free form objects, like a blade integrated disk (blisk) of a jet engine compressor, is currently subject to research. High measurement precision and speed are required and the ...
  • A raspberry pi based portable endoscopic 3D measurement system 
    Schlobohm, Jochen; Pösch, Andreas; Reithmeier, Eduard (Basel : MDPI AG, 2016)
    Geometry measurements are very important to monitor a machine part’s health and performance. Optical measurement system have several advantages for the acquisition of a parts geometry: measurement speed, precision, point ...
  • Structured light sensor with telecentric stereo camera pair for measurements through vacuum windows 
    Beermann, Rüdiger; Quentin, Lorenz; Kästner, Markus; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 2019)
    Within the Collaborative Research Centre 1153 Tailored Forming a process chain is being developed to manufacture hybrid high performance components made from different materials. The optical geometry characterization of ...