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Dirk Stöbener on Muck Rack

Dirk Stöbener

As seen in: Journal of Manufacturing and Materials Processing, MDPI
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Articles by Dirk Stöbener

Shadow-Imaging-Based Triangulation Approach for Tool Deflection Measurement

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By Axel von Freyberg, Dirk Stöbener, Andreas Marco Fischer, Marina Terlau
| MDPI
3.2. Experimental Setup with Three Sensors In the experiments, sensor 1 is investigated in an axial measurement range of 500 mm beginning at a minimum measuring distance of 300 mm. The investigated lateral measurement range is 300 mm in horizontal direction and 200 mm in vertical direction, each centered in front of the sensor.
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Noise reduction in high-resolution speckle displacement measurements through ensemble averaging

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By Andreas M. Fischer, Dirk Stöbener, Andreas Tausendfreund, León Schweickhardt
| osapublishing.org
Abstract To measure surface displacement on micro samples, a non-invasive method with both a low displacement measurement uncertainty below 100 nm and high spatial resolution of around 20 µm is required. In digital image speckle correlation, both requirements can be fulfilled individually but not simultaneously. To lower the displacement measurement uncertainty without deteriorating the spatial resolution, an ensemble averaging technique over multiple uncorrelated speckle patterns is presented.
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Laser light source limited uncertainty of speckle-based roughness measurements

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By Andreas M. Fischer, Dirk Stöbener, Stefan Patzelt
| osapublishing.org
Abstract Surface microtopography measurement (e.g., form, waviness, roughness) is a precondition to assess the surface quality of technical components with regard to their applications. Laser speckle-based roughness measurement is an optical scattered light measuring technique that provides field of view dimensions of some square millimeters and measuring frequencies in the kilohertz domain enabling in-process roughness characterization of even moving part surfaces.
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