Model-Aided Diagnosis of Mechanical Systems

1 Introduction.- 1.1 The Intention.- 1.2 The Concept.- 1.3 Modelling.- 1.4 Summary.- 2 Review of Tools and Concepts of Diagnosis.- 2.1 Damage, Faults and their Descriptions.- 2.2 Symptoms.- 2.3 Damage Initiation and Evolution in Operating Systems.- 2.4 Summary.- 3 Fault-Related Processes: Monitoring, Measurements, Processing of Signals.- 3.1 Monitoring.- 3.2 Measurements.- 3.3 Signal Pre-processing.- 3.4 Signal Processing.- 3.5 Summary.- 4 Model-Supported Diagnostics Via Parameter Estimation.- 4.1 The General Procedure.- 4.2 Model Adjustment - Preparations.- 4.3 Model Adjustment - Methods.- 4.4 Algorithms.- 4.5 Practical Hints.- 4.6 Use of the Knowledge Base for Diagnosis.- 4.7 Summary.- 5 Decision, Assessment, and System Modification Procedures.- 5.1 Fundamentals of Decision.- 5.2 Symptom-based Decision.- 5.3 Model-based Decision.- 5.4 Assessment.- 5.5 System Modification Procedures.- 5.6 Summary.- 6 Examples and Remarks on Applications.- 6.1 An Academic Example: The FE-Model of a Satellite.- 6.2 Application in Mechanical Engineering.- 6.3 Application in Civil Engineering: Norderelb Bridge.- 6.4 Conclusion.- 7 Concluding Remarks.- References.