Abstract
High-rate monitoring, condition assessment, and control of structural systems experiencing high-rate dynamics is challenging due to these structures experiencing events of timescales below 10 ms. Examples of structures that require high-rate structural health monitoring include spacecraft, hypersonic vehicles, ballistic packages, and active barriers for blast mitigation. Subsecond model updating techniques for this unique class of structures must be capable of tracking the system through rapidly changing input forces and time-varying structural parameters. Moreover, any methodology designed for high-rate structural health monitoring must account for the challenges associated with high-speed data measurement and model updating in its formulation. This work presents and experimentally validates a subsecond model updating methodology for enabling high-rate structural health monitoring of a structure that undergoes system-level changes (i.e., damage) while accounting for uncertainties in the measurements, model, and system. To achieve this, a parallelized residual minimization model updating technique is implemented on an FPGA where model parameters are drawn from a continuously updated parameter pool. The parameter pool is updated based on previous system states and known upcoming events (e.g., impacts). In this work, the DROPBEAR experimental test bed at the Air Force Research Laboratory is used to validate the proposed methodology for a one-degree-of-freedom system with a continuously changing boundary condition. Results demonstrate that a continuously changing boundary condition can be successfully tracked at time intervals of 10 ms or less. Computational speed, prediction accuracy as a function of model size, and the role of measurement noise are examined in this work.
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References
Wadley, H., Dharmasena, K., He, M., McMeeking, R., Evans, A., Bui-Thanh, T., Radovitzky, R.: An active concept for limiting injuries caused by air blasts. International Journal of Impact Engineering. 37(3), 317–323 (2010). https://doi.org/10.1016/j.ijimpeng.2009.06.006
Dodson, J.C., Lowe, R.D., Foley, J.R., Mougeotte, C., Geissler, D., Cordes, J.: Dynamics of interfaces with static initial loading. In: Dynamic Behavior of Materials, vol. 1, pp. 37–50. Springer International Publishing, Cham (2013). https://doi.org/10.1007/978-3-319-00771-7_5
Stein, C., Roybal, R., Tlomak, P., Wilson, W.: A review of hypervelocity debris testing at the air force research laboratory. Space Debris. 2(4), 331–356 (2000). https://doi.org/10.1023/b:sdeb.0000030024.23336.f5
Chen, W., Hao, H.: Numerical study of blast-resistant sandwich panels with rotational friction dampers. Int. J. Struct. Stab. Dyn. 13(06), 1350014 (2013). https://doi.org/10.1142/s0219455413500144
Joyce, B., Dodson, J., Laflamme, S., Hong, J.: An experimental test bed for developing high-rate structural health monitoring methods. Shock. Vib. 2018, 1–10 (2018). https://doi.org/10.1155/2018/3827463
Parker Servo Systems. onexia.com/parker/pdf/ONExia-Parker-P-Series-Catalog.pdf (2016)
Hong, J., Dodson, J., Laflamme, S., Downey, A.: Transverse vibration of clamped-pinned-free beam with mass at free end. Appl. Sci. 9(15), 2996 (2019). https://doi.org/10.3390/app9152996
Acknowledgements
This material is based upon work supported by the United States Air Force through the Air Force Research Laboratory Summer Internship Program and AFRL/RWK contract number FA8651-17-D-0002 and partly by the National Science Foundation Grant No. 1850012 and 1937535. The support from these agencies is gratefully acknowledged. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the United States Air Force or the National Science Foundation.
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Carroll, M., Downey, A., Dodson, J., Hong, J., Scheppegrell, J. (2021). Subsecond Model Updating for High-Rate Structural Health Monitoring. In: Dilworth, B., Mains, M. (eds) Topics in Modal Analysis & Testing, Volume 8. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-030-47717-2_19
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DOI: https://doi.org/10.1007/978-3-030-47717-2_19
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