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Stasicki, Boleslaw and Boden, Fritz (2008) Optical measurement of surface deformation. [Other]
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Abstract
An electronic camera, which is synchronized with the oscillation via a digital phase shifter, is targeted on this pattern. By recording a reference frame e.g. at the neutral position of the wing as well as a second frame in the deflected position and comparing both, the displacement vectors of the dots can be calculated by means of correlation analysis. Hence the translation and the deformation of the examined surface are obtained. For qualitative preview this calculation can be done in real-time, so that the vectors are directly depicted on the screen. By using the digital phase shifter, the movement of the object and the corresponding vector fields can be displayed in real-time as slowly as desired (slow motion effect). To get real three-dimensional information about the movement and the deformation of the investigated surface, a stereoscopic camera setup consisting of two cameras targeted on the same dot pattern from different positions i.e. under different viewing angles can be used.
| Item URL in elib: | https://elib.dlr.de/51670/ | |||||||||
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| Document Type: | Other | |||||||||
| Title: | Optical measurement of surface deformation | |||||||||
| Authors: |
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| Date: | 2008 | |||||||||
| Refereed publication: | No | |||||||||
| Open Access: | No | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Number of Pages: | 2 | |||||||||
| Series Name: | Handout | |||||||||
| Status: | Published | |||||||||
| Keywords: | Image Pattern Correlation Technique (IPCT), DLR's prototype Fairchild Dornier (Do 728), videostroboscopy | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport (old) | |||||||||
| HGF - Program: | Aeronautics | |||||||||
| HGF - Program Themes: | Aircraft Research (old) | |||||||||
| DLR - Research area: | Aeronautics | |||||||||
| DLR - Program: | L AR - Aircraft Research | |||||||||
| DLR - Research theme (Project): | L - Flight Physics (old) | |||||||||
| Location: | Göttingen | |||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Experimental Methods | |||||||||
| Deposited By: | Micknaus, Ilka | |||||||||
| Deposited On: | 15 May 2008 | |||||||||
| Last Modified: | 27 Apr 2009 14:27 |
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