A Caltech Library Service

Uncertainty Analysis of Dynamic Rupture Measurements Obtained Through Ultrahigh-Speed Digital Image Correlation

Lattanzi, A. and Rubino, V. and Rossi, M. and Donzelli, A. and Rosakis, A. J. and Lapusta, N. (2023) Uncertainty Analysis of Dynamic Rupture Measurements Obtained Through Ultrahigh-Speed Digital Image Correlation. Experimental Mechanics . ISSN 0014-4851. doi:10.1007/s11340-022-00932-9. (In Press)

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


Background: The full-field behavior of dynamic shear cracks, with their highly transient features, has recently been quantified by employing Digital Image Correlation (DIC) coupled with ultrahigh-speed photography (at 1-2 million frames/sec). The use of ultrahigh-speed DIC has enabled the observation of complex structures associated with the evolution of the dynamic shear fractures under controlled laboratory conditions, providing a detailed description of their distinctive full-field kinematic features. This has allowed to identify, for instance, the spatiotemporal characteristics of sub-Rayleigh and intersonic shear ruptures, and to measure the evolution of dynamic friction during rupture propagation of frictional shear ruptures. Objective: Capturing such highly transient phenomena represents a challenging metrological process influenced by both ultra-fast imaging procedures and DIC analysis parameters. However, the effect of these parameters on the quantification of the rupture features has not been assessed yet. Here, a simulated experiment framework is presented and employed to evaluate the uncertainties associated with ultrahigh-speed DIC measurements. Methods: Finite element simulations replicate laboratory experiments of dynamic ruptures spontaneously propagating along frictional interfaces. Experimental images of the specimen acquired with an ultrahigh-speed camera are numerically deformed by the displacement fields obtained from the numerical simulations and are analyzed using the same DIC analysis procedure as in the laboratory experiments. Results: The displacement, particle velocity, and strain fields obtained from the DIC analysis are compared with the ground-truth fields of the numerical simulations, correlating the measurement resolution with the physical length scale of the propagating Mode II rupture. In addition, the full-field data are employed to estimate the capability of the ultrahigh-speed DIC setup to infer the dynamic friction evolution. Conclusions: This methodology allows us to quantify the accuracy of the ultrahigh-speed DIC measurements in resolving the complex spatiotemporal structures of dynamic shear ruptures, focusing on the impact of the key correlation parameters.

Item Type:Article
Related URLs:
URLURL TypeDescription ReadCube access
Lattanzi, A.0000-0001-7540-3136
Rubino, V.0000-0002-4023-8668
Rosakis, A. J.0000-0003-0559-0794
Lapusta, N.0000-0001-6558-0323
Additional Information:V.R. and A.J.R. would like to acknowledge the support of NSF (Grant EAR-1651235 and EAR-1651235), the US Geological Survey (USGS) (Grant G20AP00037), the NSF-IUCRC at California Institute of Technology-Center for Geomechanics and Mitigation of Geohazards (GMG), and the Southern California Earthquake Center (SCEC). SCEC is funded by NSF Cooperative Agreement EAR-1033462 and USGS Cooperative Agreement G12AC20038. V.R. thanks Fabrice Pierron for insightful discussions on the uncertainty quantification of DIC measurements.
Group:GALCIT, Division of Geological and Planetary Sciences, Seismological Laboratory, Center for Geomechanics and Mitigation of Geohazards (GMG)
Funding AgencyGrant Number
Center for Geomechanics and Mitigation of GeohazardsUNSPECIFIED
Southern California Earthquake Center (SCEC)UNSPECIFIED
Record Number:CaltechAUTHORS:20230123-451841300.38
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:118902
Deposited By: Research Services Depository
Deposited On:16 Feb 2023 17:33
Last Modified:16 Feb 2023 17:33

Repository Staff Only: item control page