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Experimental Vibration Analysis of Inflatable Beams for an AFIT Space Shuttle Experiment

Experimental Vibration Analysis of Inflatable Beams for an AFIT Space Shuttle Experiment

Paperback

Technology & EngineeringGeneral Education

ISBN10: 1288326912
ISBN13: 9781288326914
Publisher: Biblioscholar
Published: Nov 21 2012
Pages: 180
Weight: 0.57
Height: 0.38 Width: 6.14 Depth: 9.21
Language: English

The Department of Defense, NASA, and others are considering space-based inflatable structures to reduce the costs associated with the design, manufacturing, and launch of space structures. The Rigidized Inflatable Get-Away-Special Experiment (RIGEX) is an autonomous, self-contained Space Shuttle experiment that will inflate and rigidize several cylindrical beam structures. After inflation and rigidization, the experiment will perform a vibration analysis by exciting the rigidized beams with piezoelectric transducers (PZTs) and collecting the acceleration at the tip of the beam via a tri-axial accelerometer in the zero-g vacuum of space. This thesis presents the experimental vibration analysis for the beams on the ground, using a shaker for excitation to characterize the modal properties. Piezoelectric transducers are then used for excitation in modal tests in a near-vacuum. The test data for the bending modes are compared to an Euler-Bernoulli beam theory model to determine its validity for analytic prediction.

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