@article{RahimpourChristianFeseretal., author = {Rahimpour, Ebrahim and Christian, Jochen and Feser, K. and Mohseni, Hossein}, title = {Modellierung der Transformatorwicklung zur Berechnung der {\"U}bertragungsfunktion f{\"u}r die Diagnose von Transformatoren}, series = {Elektrie: deutsche Elektrotechnik}, volume = {54}, journal = {Elektrie: deutsche Elektrotechnik}, number = {1-2}, address = {Berlin}, issn = {0013-5399}, pages = {18 -- 30}, language = {de} } @article{RahimpourChristianFeseretal., author = {Rahimpour, Ebrahim and Christian, Jochen and Feser, K. and Mohseni, Hossein}, title = {Transfer function method to diagnose axial displacement and radial deformation of transformer windings}, series = {IEEE Transactions on Power Delivery}, volume = {18}, journal = {IEEE Transactions on Power Delivery}, number = {2}, issn = {1937-4208}, doi = {10.1109/TPWRD.2003.809692}, pages = {493 -- 505}, language = {en} } @article{RahimpourChristianFeseretal., author = {Rahimpour, Ebrahim and Christian, Jochen and Feser, K. and Mohseni, Hossein}, title = {Transfer function method to diagnose axial displacement and radial deformation of transformer windings}, series = {IEEE Power Engineering Review}, volume = {22}, journal = {IEEE Power Engineering Review}, number = {8}, issn = {1558-1705}, doi = {10.1109/MPER.2002.4312519}, pages = {70 -- 70}, language = {en} } @article{RahimpourChristianFeseretal., author = {Rahimpour, Ebrahim and Christian, Jochen and Feser, K. and Mohseni, Hossein}, title = {Ability of transfer function method to diagnose axial displacement of transformer windings}, series = {European Transactions on Electrical Power (ETEP)}, volume = {12}, journal = {European Transactions on Electrical Power (ETEP)}, number = {3}, publisher = {Wiley}, issn = {1546-3109}, doi = {10.1002/etep.4450120309}, pages = {225 -- 234}, language = {en} } @article{RahimpourChristianFeseretal., author = {Rahimpour, Ebrahim and Christian, Jochen and Feser, K. and Mohseni, Hossein}, title = {Die F{\"a}higkeit eines detaillierten Modells zur Diagnose axialer Verschiebungen in Transformatorwicklungen mit Hilfe von {\"U}bertragungsfunktionen}, series = {Archiv f{\"u}r Elektrotechnik (Electrical Engineering)}, volume = {83}, journal = {Archiv f{\"u}r Elektrotechnik (Electrical Engineering)}, number = {1-2}, issn = {1432-0487}, doi = {10.1007/s002020000062}, pages = {55 -- 61}, language = {de} } @inproceedings{RahimpourLesaniMohsenietal., author = {Rahimpour, Ebrahim and Lesani, H. and Mohseni, Hossein and Christian, Jochen}, title = {Simulation and Analysis of the Transfer Function to Diagnose Mechanical faults in Transformer Windings}, series = {10th Iranian Conference on Electrical Engineering, Tabriz, Iran, May 2002}, volume = {4}, booktitle = {10th Iranian Conference on Electrical Engineering, Tabriz, Iran, May 2002}, pages = {654 -- 659}, language = {en} } @inproceedings{RahimpourChristianFeseretal., author = {Rahimpour, Ebrahim and Christian, Jochen and Feser, K. and Lesani, H.}, title = {Mathematical Model for Transformer Winding to Diagnose radial Deformation}, series = {16th International Power System Conference, Tehran, Iran, November 2001}, booktitle = {16th International Power System Conference, Tehran, Iran, November 2001}, language = {en} } @inproceedings{RahimpourChristianFeseretal., author = {Rahimpour, Ebrahim and Christian, Jochen and Feser, K. and Mohseni, Hossein}, title = {Ability of a Detailed Transformer Model to Diagnose Radial Deformation of Windings}, series = {International Conference on Advances in Processing, Testing and Application of Dielectric Materials, Wroclaw, Poland, 17-19 September, 2001}, booktitle = {International Conference on Advances in Processing, Testing and Application of Dielectric Materials, Wroclaw, Poland, 17-19 September, 2001}, language = {en} } @inproceedings{RahimpourChristianFeseretal., author = {Rahimpour, Ebrahim and Christian, Jochen and Feser, K. and Mohseni, Hossein}, title = {Calculation of the Transfer Function to Diagnose Axial Displacement and Radial Deformation of Transformer Windings}, series = {12th International Symposium on High Voltage Engineering, Bangalore, India, 20-24 August 2001}, volume = {5}, booktitle = {12th International Symposium on High Voltage Engineering, Bangalore, India, 20-24 August 2001}, number = {7-41}, pages = {1199-1202}, language = {en} } @inproceedings{RahimpourChristianFeseretal., author = {Rahimpour, Ebrahim and Christian, Jochen and Feser, K. and Mohseni, Hossein}, title = {Modeling of transformer windings for the calculation of the transfer function for the monitoring of transformers}, series = {15th International Power System Conference, Tehran, Iran, November 2000}, booktitle = {15th International Power System Conference, Tehran, Iran, November 2000}, language = {en} } @article{FrankeZieglerMerhof, author = {Franke, J{\"o}rg and Ziegler, Christian and Merhof, Jochen}, title = {Workflowoptimierung im Umfeld medizinischer Großger{\"a}te}, series = {Professional Process}, volume = {3}, journal = {Professional Process}, number = {1}, pages = {26 -- 28}, language = {de} } @article{HoefflinSauerSchiffleretal., author = {H{\"o}fflin, Dennis and Sauer, Christian and Schiffler, Andreas and Manara, Jochen and Hartmann, J{\"u}rgen}, title = {Pixelwise high-temperature calibration for in-situ temperature measuring in powder bed fusion of metal with laser beam}, series = {Heliyon}, volume = {10}, journal = {Heliyon}, number = {7}, publisher = {Elsevier BV}, issn = {2405-8440}, doi = {10.1016/j.heliyon.2024.e28989}, abstract = {High-temperature calibration methods in additive manufacturing involve the use of advanced techniques to accurately measure and control the temperature of the build material during the additive manufacturing process. Infrared cameras, blackbody radiation sources and non-linear optimization algorithms are used to correlate the temperature of the material with its emitted thermal radiation. This is essential for ensuring the quality and repeatability of the final product. This paper presents the calibration procedure of an imaging system for in-situ measurement of absolute temperatures and temperature gradients during powder bed fusion of metal with laser beam (PBF-LB/M) in the temperature range of 500 K-1500 K. It describes the design of the optical setup to meet specific requirements in this application area as well as the procedure for accounting the various factors influencing the temperature measurement. These include camera-specific effects such as varying spectral sensitivities of the individual pixels of the sensor as well as influences of the exposure time and the exposed sensor area. Furthermore, influences caused by the complex optical path, such as inhomogeneous transmission properties of the galvanometer scanner as well as angle-dependent transmission properties of the f-theta lens were considered. A two-step fitting algorithm based on Planck's law of radiation was applied to best represent the correlation. With the presented procedure the calibrated thermography system provides the ability to measure absolute temperatures under real process conditions with high accuracy.}, language = {en} } @article{WeberKruegerBlumAltEppingetal., author = {Weber-Kr{\"u}ger, Mark and Blum, Moritz and Alt-Epping, Bernd and Dittrich, Marc and Goss, Franz and Henking, Tanja and Abdul-Khaliq, Hashim and Knappe, Dorit and Neitzke, Gerald and Perings, Christian and Rittger, Harald and Stanze, Henrikje and Witte, Klaus K. and Dutzmann, Jochen}, title = {Therapiezielfestlegung und -{\"a}nderung im Verlauf der chronischen Herzinsuffizienz}, series = {Zeitschrift f{\"u}r Herz-,Thorax- und Gef{\"a}ßchirurgie}, journal = {Zeitschrift f{\"u}r Herz-,Thorax- und Gef{\"a}ßchirurgie}, publisher = {Springer Science and Business Media LLC}, issn = {0930-9225}, doi = {10.1007/s00398-026-00757-x}, language = {en} }