In building a reliable aeroelastic model of a newly developed aircraft, one key factor is the coherence between ground vibration and flight flutter tests. This complex relation entails the complementarity of the ground and flight tests, and the …
In this paper, consistent multiple-input frequency-domain estimators will be presented based on a right matrix-fraction description of the frequency response function. This matrix-fraction description leads to a fast algorithm in the same way as the …
In the previous decade two new concepts in modal analysis have matured that might benefit the processing of flight flutter test data: Operational Modal Analysis with eXogenous inputs (OMAX), and the concept of transmissibility functions. OMAX is a …
During the recent years several new tools have been introduced in the field of Operational Modal Analysis (OMA) such as the transmissibility-based approach and the OMAX concept. Most OMA estimators assume that the ambient forces are random noise …
Ambient noise is generally seen as an unwanted excitation that disturbs the estimation of vibration parameters. Av- eraging techniques are then used to decrease as much as possible the influence of the noise. However, this noise also excites the …
Classical Experimental Modal Analysis (EMA) and Operational Modal Analysis (OMA) were recently combined into the so-called OMAX framework: Operational Modal Analysis with eXogenous inputs. In this framework both the artificial forces and the ambient …