TY - JOUR
T1 - An algorithm for structural health monitoring by digital image correlation
T2 - Proof of concept and case study
AU - Curt, Jordan
AU - Capaldo, Matteo
AU - Hild, François
AU - Roux, Stéphane
N1 - Publisher Copyright:
© 2021
PY - 2022/4/1
Y1 - 2022/4/1
N2 - 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 reduces to a simple scalar product between the image and the corresponding extractor, which allows for very fast and non-iterative processing. As an illustration, this methodology is deployed on a test case of fatigue crack propagation.
AB - 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 reduces to a simple scalar product between the image and the corresponding extractor, which allows for very fast and non-iterative processing. As an illustration, this methodology is deployed on a test case of fatigue crack propagation.
U2 - 10.1016/j.optlaseng.2021.106842
DO - 10.1016/j.optlaseng.2021.106842
M3 - Article
AN - SCOPUS:85120682871
SN - 0143-8166
VL - 151
JO - Optics and Lasers in Engineering
JF - Optics and Lasers in Engineering
M1 - 106842
ER -