Multi-domain system level modeling approach for assessment of degradation behaviour under thermal and thermo-mechanical stress

Within the scope of this work, a multi-domain system modeling approach that is compatible with various electronical components and subsystems used in automotive and railway applications is to be developed. This approach serves the development of a hybrid, model-based condition monitoring of complex electronic and mechatronic systems. It aims at the implementation of condition monitoring in relevant applications of automotive and railway technology, e.g., safety-relevant electronic systems for train control and control units of electrified automobiles. Furthermore, the multi-physics modeling of the mentioned electronic components is performed using different object-oriented simulation environments, such as Simulink and OpenModelica1 in order to obtain as much information as possible that is relevant for the reliability assessment of the modeled systems. The approach is applied on two common example circuits used in complex electronic systems, a clocking circuit with a crystal oscillator and a full-wave bridge rectifier circuit. Moreover, the investigated circuits as well as the degradation behaviour under external loads during the operational lifetime in order to model the functionality are demonstrated.