Damage Detection and Quantification via Multiview DIC at Varying Scales

Background

To minimize measurement uncertainties and create seamless procedures between tests and simulations for the characterization and prediction of damage in large scale structures, a system capable of monitoring the quantities of interest at different scales throughout the test is required.

Objective

The aim of this work is to develop a multiview DIC framework at varying scales in which kinematic fields are expressed on a unique mesh.

Methods

A three-point flexural test was performed on a concrete beam and the images acquired by three different cameras were used to perform DIC calculations.

Results

Displacement and strain fields were measured using mono and multiview implementations; their associated uncertainties were assessed. Damage initiation and growth within the sample was quantified based on the standard displacement uncertainty.

Conclusion

The reported results show that the proposed method reduced the associated displacement uncertainties. The onset and propagation of damage was successfully quantified.