Modal Identification of Solar Array Using Vibro Acoustic Test Data

Details Modal Identification of Solar Array Using Vibro Acoustic Test Data Modal Identification of Solar Array Using Vibro Acoustic Test Data

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.558..145p&link_type=abstract

Proceedings of the 5th International Symposium on Environmental Testing for Space Programmes Noordwijk, The Netherlands (ESA SP-

Computer Science

Scientific paper

This paper presents two industrial tools for vibration tests. First, the automatic test comparison is described : it allows to compare two measurement sets coming from two different tests, in order to identify non-linearities, frequency shifts or set-up problems. Measurement points with large discrepancies are immediately identified, whatever is the number of analyzed channels. The notching technique is then presented. The aim is to establish a test specification taking into account response level limits to avoid specimen over-testing. Two methods are described: direct limitation of levels and global limitation on the entire frequency band. These tools are implemented in the DynaWorks software and were developed in association with ESA- ESTEC.

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