An algorithm for Structural Health Monitoring by Digital Image Correlation: Proof of concept and case study - Archive ouverte HAL
Article Dans Une Revue Optics and Lasers in Engineering Année : 2022

An algorithm for Structural Health Monitoring by Digital Image Correlation: Proof of concept and case study

Résumé

In the field of structural health monitoring, the use of Digital Image Correlation (DIC) on relevant surfaces offers remarkable advantages. Such a method is presented herein. The statistically stationary nature of usual loads makes it possible to determine, by training with DIC, a reduced kinematic basis (composed of "modes") and a statistical amplitude distribution for each mode. Further, a specific DIC technique is proposed to deal with such particular kinematics by introducing an extractor per mode that operates on images after a filtering step. This per-mode DIC measurement is reduced to a simple scalar product between the image and the corresponding extractor, which allows for very fast and noniterative processing. As an illustration, this methodology is deployed on a test case of fatigue crack propagation.
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Dates et versions

hal-03490633 , version 1 (17-12-2021)

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Jordan Curt, Matteo Capaldo, François Hild, Stéphane Roux. An algorithm for Structural Health Monitoring by Digital Image Correlation: Proof of concept and case study. Optics and Lasers in Engineering, 2022, 151, pp.106842. ⟨10.1016/j.optlaseng.2021.106842⟩. ⟨hal-03490633⟩
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