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Fatigue damage prediction based on strain field estimates using a smoothed Kalman filter and sparse measurements
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.), Solid Mechanics (Div.).ORCID iD: 0000-0001-9862-1144
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0003-3611-2250
2018 (English)In: Proceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics, KU Leuven - Departement Werktuigkunde , 2018, p. 2805-2817Conference paper, Published paper (Refereed)
Abstract [en]

In this work, we address the problem of fatigue damage prediction in a truck component excited by road induced vibrations. The damage is computed from strains estimated from sparse measurements of the dynamic response. Two different fixed-lag smoothing algorithm are employed, an augmented Kalman filter extended with a fixed-lag smoother and a smoothed joint input-state estimation algorithm. The system is described with a finite element model, and due to the complexity of reproducing the system by the model, the resulting representation may contain a number of discrepancies. Nevertheless, both smoothing algorithms succeed in capturing the dynamic behaviour of the component, although the estimated strains are affected more by the large model error than the estimated acceleration are. Furthermore, it is shown that the proposed methodology of strain estimation and fatigue damage calculations correlate well with the observed failure of a component when tested in a full-scale fatigue test of a truck chassis- International Conference on Uncertainty in Structural Dynamics.

Place, publisher, year, edition, pages
KU Leuven - Departement Werktuigkunde , 2018. p. 2805-2817
National Category
Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:kth:diva-246514Scopus ID: 2-s2.0-85060378508ISBN: 9789073802995 (print)OAI: oai:DiVA.org:kth-246514DiVA, id: diva2:1299254
Conference
28th International Conference on Noise and Vibration Engineering, ISMA 2018 and 7th International Conference on Uncertainty in Structural Dynamics, USD 2018, 17 September 2018 through 19 September 2018
Note

QC 20190326

Available from: 2019-03-26 Created: 2019-03-26 Last updated: 2019-03-26Bibliographically approved

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Lagerblad, UlrikaKulachenko, Artem

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