Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Axel von Freyberg"'
Publikováno v:
Measurement: Sensors, Vol 33, Iss , Pp 101162- (2024)
In incremental sheet forming, geometrical deviations occur due to deflections of the forming stylus. To compensate the deviations, a non-contact in-process tool deflection measurement is required that is capable of measuring the tool tip position wit
Externí odkaz:
https://doaj.org/article/7ef742fab30c4c089bec43b77ef88081
Publikováno v:
Frontiers in Energy Research, Vol 11 (2023)
Thermographic flow visualization is an established tool for analyzing the actual flow behavior of real wind turbines in operation. While the laminar-turbulent flow transition as well as the beginning of flow separation can be localized in the thermog
Externí odkaz:
https://doaj.org/article/885fd7d8211b4db2a0d6a2ccb4cbc1e9
Autor:
Jakob Dieckmann, Caroline Dorszewski, Nicholas Balaresque, Axel von Freyberg, Andreas Fischer
Publikováno v:
Applied Sciences, Vol 14, Iss 3, p 1166 (2024)
The position of the laminar–turbulent flow transition affects the aerodynamic efficiency of wind turbine rotor blades. An established diagnostic tool is infrared thermography, which enables flow visualization on in-service wind turbines, including
Externí odkaz:
https://doaj.org/article/889a7bb09d5148b2bfdc54d5d5e7960c
Publikováno v:
Sensors, Vol 23, Iss 20, p 8593 (2023)
As incrementally formed sheets show large geometric deviations resulting from the deflection of the forming tool, an in-process measurement of the tool tip position is required. In order to cover a measuring volume of 2.0 m × 1.0 m × 0.2 m and to a
Externí odkaz:
https://doaj.org/article/70806c0e071f49db9467e8c1047bb7c9
Wind Turbine Tower Deformation Measurement Using Terrestrial Laser Scanning on a 3.4 MW Wind Turbine
Publikováno v:
Energies, Vol 14, Iss 11, p 3255 (2021)
Wind turbine plants have grown in size in recent years, making an efficient structural health monitoring of all of their structures ever more important. Wind turbine towers deform elastically under the loads applied to them by wind and inertial force
Externí odkaz:
https://doaj.org/article/5ca7186e4c8e498ead57409cb6978f1b
Publikováno v:
Sensors, Vol 21, Iss 3, p 937 (2021)
The demand for extensive gear shape measurements with single-digit µm uncertainty is growing. Tactile standard gear tests are precise but limited in speed. Recently, faster optical gear shape measurement systems have been examined. Optical gear shap
Externí odkaz:
https://doaj.org/article/b0240b1ed9344671baf67697fb8b0fc1
Publikováno v:
Sensors, Vol 20, Iss 14, p 3910 (2020)
To reduce wind turbine failures by defective drive trains, deviations in the geometry of large gears (diameter ≳ 1 m) must be extensively determined with single-digit micrometer uncertainties. Fixed measuring volumes limit standard measuring method
Externí odkaz:
https://doaj.org/article/c95b7d96e5ae4c0a9661f1b3947c25cc
Publikováno v:
tm - Technisches Messen. 89:544-553
The demand for scalable measuring systems for the fast measurement of tooth-individual shape parameters of large gears is increasing. Due to a limited measuring speed and a limited measuring volume, standard tactile gear measuring systems are only co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e002a7d141a7ce5b12231909e8a53a33
https://doi.org/10.1515/teme-2021-0135
https://doi.org/10.1515/teme-2021-0135
Autor:
Paula Helming, Alex Intemann, Klaus-Peter Webersinke, Axel von Freyberg, Michael Sorg, Andreas Fischer
Wind turbines have grown in size in recent years, making efficient structural health monitoring of all of their structures even more important. Wind turbine blades deform elastically under the loads applied to them by wind and inertial forces acting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ca55f141b56fa7a3677d395a9176aa8
https://wes.copernicus.org/articles/8/421/2023/
https://wes.copernicus.org/articles/8/421/2023/
Publikováno v:
tm - Technisches Messen.
Zusammenfassung Zum Umformen großer Bleche in kleinen Stückzahlen stellt die inkrementelle Blechumformung eine wirtschaftliche Alternative zum Tiefziehen dar. Auftretende Werkzeugablenkungen führen jedoch zu erhöhten Formabweichungen. Mit einer v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3654d5a6a324797e2b3cd49d4e6b71d3
https://doi.org/10.1515/teme-2022-0102
https://doi.org/10.1515/teme-2022-0102