29 citations · 83 across the 15 of their papers we have counts for
8 papers · 1 filter
Deep regularization networks for inverse problems with noisy operators
Fatemeh Pourahmadian, Yang Xu
A supervised learning approach is proposed for regularization of large inverse problems where the main operator is built from noisy data. This is germane to superresolution imaging…
Ensemble WSINDy for Data Driven Discovery of Governing Equations from Laser-based Full-field Measurements
Abigail C. Schmid, Alireza Doostan, Fatemeh Pourahmadian
This work leverages laser vibrometry and the weak form of the sparse identification of nonlinear dynamics (WSINDy) for partial differential equations to learn macroscale governing…
Deep learning for full-field ultrasonic characterization
Yang Xu, Fatemeh Pourahmadian, Jian Song +1
This study takes advantage of recent advances in machine learning to establish a physics-based data analytic platform for distributed reconstruction of mechanical properties in lay…
Time- vs. frequency- domain inverse elastic scattering: Theory and experiment
Xiaoli Liu, Jian Song, Fatemeh Pourahmadian +1
This study formally adapts the time-domain linear sampling method (TLSM) for ultrasonic imaging of stationary and evolving fractures in safety-critical components. The TLSM indicat…
Poroelastic near-field inverse scattering
Fatemeh Pourahmadian, Kevish Napal
A multiphysics data analytic platform is established for imaging poroelastic interfaces of finite permeability (e.g., hydraulic fractures) from elastic waveforms and/or acoustic po…
Differential tomography of micromechanical evolution in elastic materials of unknown micro/macrostructure
Fatemeh Pourahmadian, Houssem Haddar
Differential evolution indicators are introduced for 3D spatiotemporal imaging of micromechanical processes in complex materials where progressive variations due to manufacturing a…
Real-time imaging of interfacial damage in layered composites
Fatemeh Pourahmadian, Irene de Teresa
A theoretical platform is developed for active elastic-wave sensing of (stationary and advancing) fractures along bi-material interfaces in layered composites. Damaged contact surf…
A synoptic approach to the seismic sensing of heterogeneous fractures: from geometric reconstruction to interfacial characterization
Fatemeh Pourahmadian, Bojan B. Guzina, Houssem Haddar
A non-iterative waveform sensing approach is proposed toward (i) geometric reconstruction of penetrable fractures, and (ii) quantitative identification of their heterogeneous conta…