Particle tracking

Estimation of the Deformation Gradient Tensor by Particle Tracking Near a Free Boundary with Quantified Error

Background Obtaining accurate displacement measurements for large material deformation and/or rotation presents a distinct challenge to digital image correlation (DIC) due to cumulative and decorrelation errors, particularly near material …

Crack tip kinematics reveal the process zone structure in brittle hydrogel fracture

When brittle hydrogels fail, several mechanisms conspire to alter the state of stress near the tip of a crack, and it is challenging to identify which mechanism is dominant. In the fracture of brittle solids, a sufficient far-field stress results in …

High-Resolution Quasistatic Near-Crack-Tip Deformation Fields in Brittle Hydrogels

At the tip of a propagating crack, the stress field becomes singular - and diverges to infinity. In reality, this divergent stress is regularized, as material failure occurs; furthermore, the nature of the singularity at the crack tip can be …