1k citations · 1.1k across the 10 of their papers we have counts for
10 papers
Symmetry constrained neural networks for detection and localization of damage in metal plates
James Amarel, Christopher Rudolf, Athanasios Iliopoulos +2
The present paper is concerned with deep learning techniques applied to detection and localization of damage in a thin aluminum plate. We used data collected on a tabletop apparatu…
Projection-based model-order reduction via graph autoencoders suited for unstructured meshes
Liam K. Magargal, Parisa Khodabakhshi, Steven N. Rodriguez +2
This paper presents the development of a graph autoencoder architecture capable of performing projection-based model-order reduction (PMOR) using a nonlinear manifold least-squares…
Fluid-Solid Coupled Simulation of Hypervelocity Impact and Plasma Formation
Shafquat T. Islam, Wentao Ma, John G. Michopoulos +1
The generation of plasma from hypervelocity impacts is an active research topic due to its important science and engineering ramifications in various applications. Previous studies…
Modeling the evolution of representative dislocation structures under high thermo-mechanical conditions during Additive Manufacturing of Alloys
Markus Sudmanns, Athanasios P. Iliopoulos, Andrew J. Birnbaum +2
Mesoscale simulations of discrete defects in metals provide an ideal framework to investigate the micro-scale mechanisms governing the plastic deformation under high thermal and me…
The interplay of local chemistry and plasticity in controlling microstructure formation during laser powder bed fusion of metals
Markus Sudmanns, Andrew J. Birnbaum, Yejun Gu +4
Additive manufacturing (AM) of metallic components promises many advantages over conventional manufacturing processes through high design flexibility across multiple length scales…
Projection-tree reduced order modeling for fast N-body computations
Steven N. Rodriguez, Athanasios P. Iliopoulos, Kevin T. Carlberg +3
This work presents a data-driven reduced-order modeling framework to accelerate the computations of -body dynamical systems and their pair-wise interactions. The proposed framew…
Stability of Helical Vortex Structures Shed from Flexible Rotors
Steven N. Rodriguez, Justin W. Jaworski, John G. Michopoulos
The presented investigation is motivated by the need to uncover connections between underlying rotor fluid-structure interactions and vortex dynamics to fatigue performance and cha…
Inference and Prediction of Nanoindentation Response in FCC Crystals: Methods and Discrete Dislocation Simulation Examples
Michail Tzimas, John Michopoulos, Giacomo Po +2
Nanoindentation, a common technique for probing the mechanical properties of crystalline materials, exhibits both surface and bulk-dominated responses that are linked to the parent…
Intrinsic Strain Aging, Boundaries, and Origins of Cellular Substructure in Additively Manufactured 316L
Andrew J. Birnbaum, John C. Steuben, Erin J. Barrick +2
The observation of sub-grained cellular features in additively manufactured (AM)/selectively laser melted (SLM) 316L stainless steel components has remained an interesting, though…
Bright triplet excitons in lead halide perovskites
Michael A. Becker, Roman Vaxenburg, Georgian Nedelcu +13
Nanostructured semiconductors emit light from electronic states known as excitons[1]. According to Hund's rules[2], the lowest energy exciton in organic materials should be a poorl…