Comparison of sine dwell and broadband methods for modal testingThe objectives of modal tests for large complex spacecraft structural systems are outlined. The comparison criteria for the modal test methods, namely, the broadband excitation and the sine dwell methods, are established. Using the Galileo spacecraft modal test and the Centaur G Prime upper stage vehicle modal test as examples, the relative advantage or disadvantage of each method is examined. The usefulness or shortcomings of the methods are given from a practical engineering viewpoint.
Chen, Jay-Chung (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
September 6, 2013
January 1, 1989
Publication: ESA, Spacecraft Structures and Mechanical Testing