Jim Lua
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View article: A non-melting additive approach to structural repair of aluminum aircraft fastener holes
A non-melting additive approach to structural repair of aluminum aircraft fastener holes Open
View article: Multi-stage precipitation modeling for AA 7050 hole repairs in additive friction stir deposition
Multi-stage precipitation modeling for AA 7050 hole repairs in additive friction stir deposition Open
A multi-stage precipitation model is formulated to predict the microstructural evolution and explain the high performance of additive friction stir deposited aluminum alloy 7050 (AA 7050) for hole repair. The first stage is the heating pro…
View article: Large language models, physics-based modeling, experimental measurements: the trinity of data-scarce learning of polymer properties
Large language models, physics-based modeling, experimental measurements: the trinity of data-scarce learning of polymer properties Open
Large language models (LLMs) bear promise as a fast and accurate material modeling paradigm for evaluation, analysis, and design. Their vast number of trainable parameters necessitates a wealth of data to achieve accuracy and mitigate over…
View article: 3D Progressive Failure Modeling of Drop-Weight Impact on Composite Laminates
3D Progressive Failure Modeling of Drop-Weight Impact on Composite Laminates Open
Composite laminates are susceptible to out-of-plane impact loads due to the lack of reinforcement in the through-thickness direction. Unlike the localized damage induced by a high velocity impact where the incident energy is dissipated nea…
View article: A Dual Spring Modeling Approach for Static and Fatigue Failure Assessments of Carbon/Epoxy Composite Sub-Elements
A Dual Spring Modeling Approach for Static and Fatigue Failure Assessments of Carbon/Epoxy Composite Sub-Elements Open
A dual spring model is developed for the static and fatigue damage predictions of laminates interface in composite structures. Stress concentrations can be induced by the defects formed in the fabrication or service process. A conventional…
View article: The second Sandia Fracture Challenge: predictions of ductile failure under quasi-static and moderate-rate dynamic loading
The second Sandia Fracture Challenge: predictions of ductile failure under quasi-static and moderate-rate dynamic loading Open
View article: The second Sandia Fracture Challenge: predictions of ductile failure under quasi-static and moderate-rate dynamic loading
The second Sandia Fracture Challenge: predictions of ductile failure under quasi-static and moderate-rate dynamic loading Open
Ductile failure of structural metals is relevant to a wide range of engineering scenarios. Computational methods are employed to anticipate the critical conditions of failure, yet they sometimes provide inaccurate and misleading prediction…