Analyses of internal structures and defects in materials using physics-informed neural networks

E Zhang, M Dao, GE Karniadakis, S Suresh - Science advances, 2022 - science.org
Characterizing internal structures and defects in materials is a challenging task, often
requiring solutions to inverse problems with unknown topology, geometry, material …

Derivative-informed neural operator: an efficient framework for high-dimensional parametric derivative learning

T O'Leary-Roseberry, P Chen, U Villa… - Journal of Computational …, 2024 - Elsevier
We propose derivative-informed neural operators (DINOs), a general family of neural
networks to approximate operators as infinite-dimensional mappings from input function …

Residual-based error correction for neural operator accelerated infinite-dimensional Bayesian inverse problems

L Cao, T O'Leary-Roseberry, PK Jha, JT Oden… - Journal of …, 2023 - Elsevier
We explore using neural operators, or neural network representations of nonlinear maps
between function spaces, to accelerate infinite-dimensional Bayesian inverse problems …

Linear and nonlinear elastic modulus imaging: an application to breast cancer diagnosis

S Goenezen, JF Dord, Z Sink… - IEEE transactions on …, 2012 - ieeexplore.ieee.org
We reconstruct the in vivo spatial distribution of linear and nonlinear elastic parameters in
ten patients with benign (five) and malignant (five) tumors. The mechanical behavior of …

[HTML][HTML] Resolving engineering challenges: Deep learning in frequency domain for 3D inverse identification of heterogeneous composite properties

Y Liu, Y Mei, Y Chen, B Ding - Composites Part B: Engineering, 2024 - Elsevier
The inverse identification of heterogeneous composite properties from measured
displacement/strain fields is pivotal in engineering. Traditional methodologies and emerging …

Circumventing the solution of inverse problems in mechanics through deep learning: Application to elasticity imaging

D Patel, R Tibrewala, A Vega, L Dong… - Computer Methods in …, 2019 - Elsevier
The ability to make decisions based on quantities of interest that depend on variables
inferred from measurement finds application in different fields of mechanics and physics …

Recent results in nonlinear strain and modulus imaging

TJ Hall, PE Barboneg, AA Oberai… - Current Medical …, 2011 - ingentaconnect.com
We report a summary of recent developments and current status of our team's efforts to
image and quantify in vivo nonlinear strain and tissue mechanical properties. Our work is …

[HTML][HTML] General finite-element framework of the virtual fields method in nonlinear elasticity

Y Mei, J Liu, X Guo, B Zimmerman, TD Nguyen… - Journal of Elasticity, 2021 - Springer
This paper presents a method to derive the virtual fields for identifying constitutive model
parameters using the Virtual Fields Method (VFM). The VFM is an approach to identify …

Data-driven elasticity imaging using cartesian neural network constitutive models and the autoprogressive method

C Hoerig, J Ghaboussi… - IEEE transactions on …, 2018 - ieeexplore.ieee.org
Quasi-static elasticity imaging techniques rely on model-based mathematical inverse
methods to estimate mechanical parameters from force-displacement measurements. These …

[HTML][HTML] Estimating the non-homogeneous elastic modulus distribution from surface deformations

Y Mei, R Fulmer, V Raja, S Wang… - International Journal of …, 2016 - Elsevier
We present a novel approach to solve the inverse problem in finite elasticity for the non-
homogeneous shear modulus distribution solely from known surface deformation fields. The …