https://fordatis.fraunhofer.de/handle/fordatis/19 Thu, 30 Apr 2026 16:29:34 GMT 2026-04-30T16:29:34Z https://fordatis.fraunhofer.de/handle/fordatis/467 Titel: Parameter Harmonization of Jiles-Atherton model Variants Datenautorinnen und Datenautoren: Thieltges, Sascha Zusammenfassung: This dataset provides the numerical results and optimization routines used to harmonize different Jiles–Atherton (JA) hysteresis model variants. The goal of the study was to determine whether parameter sets of one JA formulation can be transformed such that another formulation reproduces the same B(H) behaviour. Wed, 01 Jan 2025 00:00:00 GMT https://fordatis.fraunhofer.de/handle/fordatis/467 2025-01-01T00:00:00Z https://fordatis.fraunhofer.de/handle/fordatis/466 Titel: Comparative Analysis and Numerical Stability Assessment of Jiles-Atherton Model Variants (Source Code Release) Datenautorinnen und Datenautoren: Thieltges, Sascha Zusammenfassung: This repository provides the full source code and datasets used to compare multiple Jiles–Atherton (JA) hysteresis model variants, including Jiles86, Jiles92, Jiles94, Bergqvist96, Annakkage00, Cheng18, and Xue22. The material contains the numerical framework for computing complete B(H) cycles using a Runge–Kutta integration scheme, the stability assessment across 300 consecutive cycles, and the RMSE-based evaluation of convergence behavior under soft- and hard-magnetic parameter sets. The code enables full reproducibility of the model comparison, including parameter handling, cycle generation, and visualization tools. Wed, 01 Jan 2025 00:00:00 GMT https://fordatis.fraunhofer.de/handle/fordatis/466 2025-01-01T00:00:00Z https://fordatis.fraunhofer.de/handle/fordatis/465 Titel: Inverse Bestimmung der Jiles-Atherton-Parameter durch Optimierung (Differential-Evolution) und Surrogatmodellierung Datenautorinnen und Datenautoren: Thieltges, Sascha Zusammenfassung: The dataset includes a COMSOL model that replicates the experimental setup used for characterizing ferromagnetic hysteresis. Based on this model, synthetic training data were generated and used to create a surrogate model within COMSOL. This surrogate model was integrated into a MATLAB script that also processes experimental measurement data. The script performs an inverse identification of the Jiles–Atherton parameters using a Differential Evolution algorithm. This approach enables a model-based reconstruction of the ferromagnetic hysteresis curve for the investigated material. Wed, 01 Jan 2025 00:00:00 GMT https://fordatis.fraunhofer.de/handle/fordatis/465 2025-01-01T00:00:00Z https://fordatis.fraunhofer.de/handle/fordatis/284 Titel: TeaM Cables - European Tools and Methodologies for an efficient ageing management of nuclear power plant Cables Datenautorinnen und Datenautoren: Stumm, Christopher; Keller, Andreas Zusammenfassung: Teraherz measurements performed on xlpe specimens. Fri, 01 Sep 2017 00:00:00 GMT https://fordatis.fraunhofer.de/handle/fordatis/284 2017-09-01T00:00:00Z