Comparison of Modal Test Methods on the Voyager Payload 781044
A comparison of the performance of modern modal data analysis methods on test data from the Voyager Jupiter/Saturn payload is presented. Four different test/data-analysis combinations are compared--multiple-point sine excitation tests, single-point random-excitation tests using two different techniques of manipulating Fourier transform data, and a time-domain method for analyzing random data. Results indicate that all four methods can give comparable results. Of the four, the time-domain approach detects more modes in the test data and, at the same time, shows the greatest promise for reducing the time and cost of modal testing.
Citation: Hanks, B., Miserentino, R., Ibrahim, S., Lee, S. et al., "Comparison of Modal Test Methods on the Voyager Payload," SAE Technical Paper 781044, 1978, https://doi.org/10.4271/781044. Download Citation
Author(s):
B. R. Hanks, R. Miserentino, S. R. Ibrahim, S. H. Lee, B. K. Wada
Affiliated:
NASA, Langley Research Center, Hampton, VA, NASA, Jet Propulsion Lab, Pasadena, CA
Pages: 11
Event:
Aerospace Meeting
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1978 Transactions-V87-A
Related Topics:
Test procedures
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