Condition monitoring is a methodological approach and research field concerned with assessing the operational health and performance status of equipment, systems, or structures. It involves the systematic collection and analysis of data from assets during operation to identify deviations from normal behavior that may indicate degradation, anomalies, or impending failure. This concept investigates changes in key parameters through various sensing and diagnostic techniques, enabling predictive maintenance strategies, optimizing asset utilization, and enhancing reliability and safety by facilitating timely intervention before critical failure occurs.