29 citations · 164 across the 22 of their papers we have counts for
22 papers
Solitonic State in Microscopic Dynamic Failures
H. O. Ghaffari, M. Pec, W. A. Griffith
Onset of permanent deformation in crystalline materials under a sharp indenter tip is accompanied by nucleation and propagation of defects. By measuring the spatio-temporal strain…
Microscopic Observation of the Light-Cone-Like Thermal Correlations in Cracking Excitations
H. O. Ghaffari, W. A. Griffith
Many seemingly intractable systems can be reduced to a system of interacting spins. Here, we introduce a system of artificial acoustic spins which are manipulated with ultrasound e…
Dynamic Evolution of Microscopic Wet Cracking Noises
H. O. Ghaffari, W. A. Griffith, P. M. Benson
Characterizing the interaction between water and microscopic defects is one of the long-standing challenges in understanding a broad range of cracking processes. Different physical…
Observation of the Kibble-Zurek Mechanism in Microscopic Acoustic Cracking Noises
H. O. Ghaffari, P. Benson, K. Xia +1
The fast evolution of microstructure is key to understanding crackling phenomena. It has been proposed that formation of a nonlinear zone around a moving crack tip controls the cra…
Faulting of rocks at three-dimensional stress field by micro-anticracks
H. O. Ghaffari, M. H. B. Nasseri, R. Paul Young
Using 9-sets of different laboratory earthquake tests, we examined the nature of cracking under true triaxial stress conditions in the lithosphere . We found that 3D stress state c…
Functional-Friction Networks: New Insights on the Laboratory Earthquakes
H. O. Ghaffari, B. D. Thompson, R. P. Young
We report some new applications of functional complex networks on acoustic emission waveforms from frictional interfaces. Our results show that laboratory faults undergo a sequence…