Edward H. Glaessgen

TL;DR: In this article, the Digital Twin system integrates ultra-high fidelity simulation with the vehicle s on-board integrated vehicle health management system, maintenance history and all available historical and fleet data to enable unprecedented levels of safety and reliability.

TL;DR: In this article, a molecular-dynamics model for crack propagation under steady-state conditions is developed to analyze intergranular fracture along a flat 99 [1 1 0] symmetric tilt grain boundary in aluminum.

TL;DR: ESCM provides an enhanced coupling methodology that is inherently applicable to three‐dimensional domains, avoids discretization of the continuum model to atomic scale resolution, and permits finite temperature states to be applied.

TL;DR: In this paper, the authors investigated the dislocation nucleation processes that occur at the tip of a crack in aluminum under a broad range of crystallographic orientations and temperatures, and interpreted the results using a Peierls continuum model that uses finite temperature material properties derived from molecular dynamics simulation.

TL;DR: In this article, a summary of the failure analyses and testing that were conducted to determine the cause of the X-33 liquid-hydrogen tank failure is presented, which includes microcracks of the inner facesheets and ensuing ingression of hydrogen and nitrogen, a low bondline strength and toughness, and the presence of foreign object debris.