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This seminar systematically explains the fundamental understanding of vibration problems centered on self-excited vibration and practical AI-based data analysis methods. Rather than focusing only on theory or AI techniques, it emphasizes the “organization, reconstruction, and utilization” of field data, enabling participants to acquire truly applicable analytical skills.

・ Fundamental understanding and identification of self-excited vibration
・ Typical patterns and diagnostic methods for unexplained vibration
・ Proper interpretation and reconstruction of vibration data
・ Feature extraction concepts suitable for AI
・ Practical processes leading to anomaly detection

• 1. What is self-excited vibration (fundamental difference from forced vibration)
• 
  1-1 Fundamental mechanism of vibration sustained by energy supply
  1-2 Differences from forced vibration and typical misinterpretations
• 1-3 Technical requirements for identifying self-excited vibration
  
  2. Why causes become unclear (common pitfalls)
• 
  2-1 Difficulty of diagnosis due to “invisible external forces”
  2-2 Misconception that frequency match equals root cause identification
• 
  3. Signs that suggest self-excited vibration
  
  3-1 Vibration that occurs or persists independent of rotational speed or input
  3-2 Behavior where amplitude increases, decreases, or diverges over time
  3-3 Nonlinear phenomena that appear or disappear depending on conditions
  3-4 Cases where countermeasures have little effect
  
  4. Classification and characteristics of typical self-excited vibration
  
  4-1 Friction-induced (stick-slip, etc.)
  4-2 Friction characteristics and transition to negative damping
  4-3 Fluid-induced (Kármán vortices, flow-induced vibration, etc.)
  4-4 Fluid-structure interaction and oscillation conditions
  4-5 Structural / control-induced (negative damping, feedback instability)
  4-6 Negative damping and control instability
  
  
• 5. Identification from field data
  
  5-1 Interpretation of time waveforms
  5-2 Avoiding misdiagnosis from FFT dependence
  5-3 Separation of synchronous and asynchronous components
  
  

• 7. Effective countermeasure patterns (design, structure, operation)
  
  7-1 Concept of stiffness and mass modification
  7-2 Conditions for effective damping addition
  7-3 Adjustment of contact, fluid, and operational conditions

• 8. Failure cases of countermeasures and their causes
  
  8-1 Risks of countermeasures without identifying causes
  8-2 Limitations of simplistic countermeasures