This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Comparison of Modal Test Methods on the Voyager Payload
Annotation ability available
Sector:
Event:
Aerospace Meeting
Language:
English
Abstract
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.
Authors
Topic
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.Also In
References
- Klosterman A. Zimmerman R. “Modal Survey Activity Via Frequency Response Functions.” Paper 751063 SAE National Aerospace Engineering and Manufacturing Meeting Culver City, California November 1975
- Richardson M. “Modal Analysis Using Digital Test Systems.” Seminar on Understanding Digital Control and Analysis in Vibration Test Systems of the Shock and Vibration Information Center Greenbelt, Maryland June 1975
- Sloane E. McKeever B. “Modal Survey Techniques and Theory.” SAE National Aerospace Engineering and Manufacturing Meeting Culver City, California November 17-20 1975
- Brown D. Carbon G. Ramsey K. “Survey of Excitation Techniques Applicable to the Testing of Automotive Structures.” Paper 770029 SAE International Automotive Engineering Congress and Exposition Detroit 1977
- Knauer C. D. Peterson A. J. Rendahl N. B. “Space Vehicle Experimental Modal Definition Using Transfer Function Techniques.” SAE National Aerospace Engineering and Manufacturing Meeting Culver City, California November 17-20 1975
- Smith S. Woods A. A. Jr. “A Multiple Driver Admittance Technique for Vibration Testing of Complex Structures.” Shock and Vibration Bulletin 42, Part 3 January 1972
- Smith S. Stroud R. C. Hamma G. A. Hallauer W. L. Jr. Yee R. C. “MODALAB-- A Computerized Data Acquisition and Analysis System for Structural Dynamic Testing.” Proceedings of the Instrument Society of America's 21st International Instrumentation Symposium 12 1975
- Hallauer W. L. Jr. Stafford J. F. “On the Distribution of Shaker Forces in Multiple-Shaker Modal Testing.” Shock and Vibration Bulletin 48, Part 1 September 1978
- Ibrahim S. R. Mikulcik E. C. “A Method for the Direct Identification of Vibration Parameters from the Free Response.” Shock and Vibration Bulletin 47, Part 4 September 1977
- Ibrahim, S. R. “Random Decrement Technique for Identification of Structural Modes of Vibrations.” Journal of Spacecraft and Rockets 14 11 November 1977
- Leppert E. L. Lee S. H. Day F. D. Chapman P. C. Wada B. K. “Comparison of Modal Test Results: Multipoint Sine Versus Single Point Random.” Paper 760879 SAE Aerospace Engineering and Manufacturing Meeting San Diego, California November 1976
- Cole H. A. Jr. “On-Line Failure Detection and Damping Measurement of Aerospace Structures by Random Decrement Signatures.” NASA CR-2205 March 1973
- Ibrahim S. R. “Modal Confidence Factor in Vibration Testing.” Shock and Vibration Bulletin 48, Part 1 September 1978
- Ibrahim S. R. “Analysis of Flight Data Using the Time Domain Technique.” 49th Shock and Vibration Symposium Washington, D.C. October 1978