Probabilistic Multiphysics Reliability of Structural and Functional Materials under Coupled Thermomechanical and Reactive Conditions
DOI:
https://doi.org/10.71465/jgs65Keywords:
Multiphysics Coupling, Probabilistic Reliability, Thermomechanical Degradation, Reactive EnvironmentsAbstract
The reliable operation of advanced engineering systems in extreme environments necessitates a deep understanding of material degradation under complex, interacting physical and chemical stimuli. This paper investigates the probabilistic multiphysics reliability of structural and functional materials subjected to coupled thermomechanical and reactive conditions. Traditional deterministic approaches often fail to account for the inherent uncertainties in material properties, environmental conditions, and synergistic degradation mechanisms. By adopting a comprehensive probabilistic framework, this study elucidates how thermal gradients, mechanical stresses, and chemical reactions, such as oxidation and corrosion, interact to accelerate material failure. The research explores the theoretical foundations of multiphysics coupling, emphasizing the non-linear feedback loops between stress-assisted diffusion, temperature-dependent mechanical degradation, and environmentally assisted cracking. Through detailed conceptual modeling and rigorous experimental design paradigms, the analysis highlights the limitations of decoupled assessments and underscores the necessity of integrated probabilistic methodologies. The findings demonstrate that coupled multiphysics models predict significantly different failure probabilities compared to isolated physics models, primarily due to the exacerbating effects of mechanochemical interactions. The insights provided aim to guide the design and life prediction of critical components in aerospace, nuclear, and advanced energy generation sectors, ensuring higher safety margins and optimized operational longevity.
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Copyright (c) 2026 Jasmine Nelson (Author)
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