Several modal test techniques were employed in the recently completed modal test on a meteorological spacecraft. The primary technique, which was required by the customer, was the classical multiple-shaker sine-dwell method. Although this method is quite time-proven, it takes considerable time to perform the test. Very good results were obtained from this method. The results are used as a basis for comparison with the results of state-of-the-art, less proven but more time efficient test methods. The paper presents the results of the multiple-shaker sine-dwell test, and comparison is made with the results of both single-point random and multiple-point random tests. The paper concludes with a short discussion of the relative merits of each technique.
Comparison of sine and random test results from a satellite modal test
Vergleich von zeitunbestimmten und zufallsvariablen Pruefergebnissen in der Modalanalyse eines Satelliten
IMAC 3. Proc. of the 3rd Int. Modal Analysis Conf., Union College-Schenectady ; 2 , Jan ; 814-823
1985
10 Seiten, 8 Tabellen, 3 Quellen
Aufsatz (Konferenz)
Englisch
MODALANALYSE , MATHEMATISCHES MODELL , FINITE-ELEMENTE-METHODE , FREQUENZGANG , MODELLMETHODE , PRUEFMETHODE , SCHWACHSTELLENPRUEFUNG , WETTERSATELLIT , ZUFALLSPROZESS , KONSTRUKTIONSDATEN , MATHEMATISCHE TRANSFORMATION , ZUFALLSZAHL , ZUFALLSVARIABLE , SCHWINGUNGSSYSTEM , SCHWINGUNGSSPEKTRUM , SYSTEMVERGLEICH
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