Modal analysis and testing of rotating structures (Q2748573)

The paper surveys the state-of-the-art of modal testing or experimental modal analysis of rotating structures. When applied to ordinary non-rotating structures, the modal testing is considered to be well established. Rotating structures impose special difficulties when one seeks the parameters of dynamic model experimentally. The paper focuses on necessary experimental techniques and their relationship to the current state of existing theories. Existing modal analysis methods, models and techniques, and their advantages, limitations and relevance are outlined and compared. In addition, the authors present some new developments allowing one to circumvent some of the above-mentioned difficulties.