Abstract
The use of non-contact measurement methods for detecting and locating sources of nonlinearities can be potentially a break-through in the nowadays experimental modal analysis. The primary goal is to define more effective test strategies, whereby contact sensors will measure the nonlinear vibration responses at the best location possible. Jointed structures are a typical example where a large number of the joint can pose the question of where what and how to measure the nonlinear response. Upon the identification of one, or more, nonlinear response mode the objective is to determine where is the source of such nonlinear vibration. Nonlinearity can be characterised when its source is well defined and can be adequately tested. This paper will attempt to detect and locate the source of nonlinearity from a multi-beam jointed assembly. The approach will be carried out by using both contact and non-contact measurement methods, the results of which will be compared and evaluated. The operator to detect the source of nonlinearity will be the coherence function applied to random response data.
Original language | English |
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Title of host publication | Rotating Machinery, Optical Methods and Scanning LDV Methods |
Subtitle of host publication | roceedings of the 37th IMAC, A Conference and Exposition on Structural Dynamics 2019 |
Editors | Christopher Niezrecki, Javad Baqersad, Dario Di Maio |
Place of Publication | Cham |
Publisher | Springer |
Pages | 1-13 |
Number of pages | 13 |
Volume | 6 |
ISBN (Electronic) | 978-3-030-12935-4 |
ISBN (Print) | 978-3-030-12934-7 |
DOIs | |
Publication status | Published - 2019 |
Externally published | Yes |
Event | 37th Conference and Exposition on Structural Dynamics, IMAC 2019 - Orlando, United States Duration: 28 Jan 2019 → 31 Jan 2019 Conference number: 37 |
Publication series
Name | Conference Proceedings of the Society for Experimental Mechanics Series |
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Publisher | Springer |
ISSN (Print) | 2191-5644 |
ISSN (Electronic) | 2191-5652 |
Conference
Conference | 37th Conference and Exposition on Structural Dynamics, IMAC 2019 |
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Abbreviated title | IMAC |
Country/Territory | United States |
City | Orlando |
Period | 28/01/19 → 31/01/19 |
Keywords
- Bolted joints
- Nonlinear vibration testing
- SLDV