Zur geotechnischen Anwendung wissensbasierter Systeme mit Elementen der Fuzzy-Logik

Available from TIB Hannover: RA 2774(53)+a+b+c / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Ueber Knochenechinokokken des Beckens

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Environmental EMC aspects of resistance welding equipment

Resulting from the connection between the change rate of a magnetic field and the induced currents in an exposed human body, pulsating magnetic fields have to be evaluated analysing the waveforms of the field or the field-generating current A corresponding assessment guideline is given in the German safety regulation on "Electromagnetic Fields" BGV Bll. Considering the specific output current waveforms of resistance welding installations, in the paper appropriate procedures to determine the waveform-dependent exposure limits are explained by the examples of an a.c. resistance welding machine and a resistance welding inverter. Based on investigations of the field distribution the occurring actual flux density values are compared to the ascertained exposure limits and a practical method to determine minimum distances ensuring compliance with the given regulations is shown

Comparison of Analytical Transformer Leakage Inductance Models: Accuracy vs. Computational Effort

Fast and accurate models of design and operating parameters are crucial for optimisation-based design of power electronic converters. The leakage inductance of transformers is one of these design parameters. This paper compares various analytical 1D and 2D leakage inductance models, and assesses them with respect to a trade-off between accuracy vs. computational effort. The computed leakage inductance per length values are compared to 2D FEM simulation results to determine the model accuracy, whereas the calculation times are extracted as indicator of each model's computational effort. The considered models are applied to six existing transformer geometries and compared to measurements. Roth's model is the most accurate of the considered models, Rogowski's model is the fastest model, and Margueron's model is the most versatile as it takes the magnetic permeability of the core into account

Empfehlungen zur Vermeidung von Planungs- und Ausschreibungsfehlern bei Ingenieurbauwerken Spundwandbauwerke

SIGLEAvailable from TIB Hannover: RA 2774(58) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Festschrift aus Anlass des 65. Geburtstages von Univ.-Prof. Dr.-Ing. Victor Rizkallah

SIGLEAvailable from TIB Hannover: RA 2774(49) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Schadensvermeidung bei Baugrubensicherungen. Traegerbohlwaende, Stahlspundwaende, Kurzzeitanker, Grundwasserabsenkungen

Available from TIB Hannover: RO 9741(13)+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman