Comparison of modal test methods on the Voyager payloadA 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.
Document ID
19790041898
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hanks, B. R. (NASA Langley Research Center Hampton, VA, United States)
Miserentino, R. (NASA Langley Research Center Hampton, Va., United States)
Ibrahim, S. R. (Old Dominion University Norfolk, Va., United States)
Lee, S. H. (NASA Langley Research Center Hampton, VA, United States)
Wada, B. K. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)
Date Acquired
August 9, 2013
Publication Date
November 1, 1978
Subject Category
Ground Support Systems And Facilities (Space)
Report/Patent Number
SAE PAPER 781044
Meeting Information
Meeting: Society of Automotive Engineers, Aerospace Meeting