Health monitoring of bolted joints using modal-based vibrothermography
| Autor: | Dario Di Maio, Nicholas A J Lieven, Xintian Chi |
|---|---|
| Přispěvatelé: | Applied Mechanics |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Technology
Computer science Science 020209 energy General Chemical Engineering Modal analysis General Physics and Astronomy 020101 civil engineering 02 engineering and technology Residual 0201 civil engineering 0202 electrical engineering electronic engineering information engineering General Materials Science Vibrothermography Joint (geology) General Environmental Science Structural health monitoring business.industry General Engineering Finite element analysis Structural engineering Finite element method Vibration Modal Bolted joint Infrared thermography General Earth and Planetary Sciences business |
| Zdroj: | SN Applied Sciences, 2(8):1446. Springer Chi, X, Di Maio, D & Lieven, N A J 2020, ' Health monitoring of bolted joints using modal-based vibrothermography ', SN Applied Sciences, vol. 2, no. 8, 1446 (2020) . https://doi.org/10.1007/s42452-020-03251-7 SN Applied Sciences, Vol 2, Iss 8, Pp 1-22 (2020) |
| ISSN: | 2523-3963 |
| Popis: | This article presents a novel modal-based vibrothermographic approach for health monitoring of loosening bolted joints in coupled structures. In this article, the theoretical background supporting this proposed approach is firstly presented. Through finite element analyses on a simple bolted structure with varying joint conditions achieved by adjustment of bolt loads, the relationship between the bolt load and the temperature increase in the vibrating bolted joint during vibrothermographic tests was revealed. Experimental vibrothermographic tests on a more complex structure were completed to verify the observations from the finite element analyses while demonstrating the viability of the vibrothermographic approach in a laboratory environment. It has been shown that this vibrothermographic approach was able to determine the stage of a bolted joint in its progression of failure by tracing the changes in the temperature increase in relevant regions during vibrothermographic tests. Moreover, additional tests have been performed to illustrate that this approach was effective even by using only the residual responses of the structure’s vibration that were away from the resonances, which indicates it is more applicable to structures with higher damping as such structures have stronger residual responses during vibration that can be utilized. In the concluding observations of the article, the procedure for practical application of this approach is summarized, and its potential for further development is discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink