Unified Mechanics of Metallic Structural Materials

Lee, Hsiao W.; Bin Jamal, Noushad; Fakhri, Hamidreza; Ranade, Ravi; Egner, Halina; Lipski, Adam; Piotrowski, Michał; Mroziński, Stanisław; Rao, Chebolu L.; Djukic, Milos B.; Basaran, Cemal

doi:10.1016/b978-0-323-90646-3.00006-x

Cited by 2 publications

(1 citation statement)

References 61 publications

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“…The Gurson model was calibrated using the unit cell approach with J2 plasticity theory and a linear H softening function. A simplified approach to modeling the combined effect of HELP and HEDE is to run a H-accelerated ductile damage model and a H-weakened cleavage fracture model at the same time, and take whichever that occurs earlier as the actual failure. , Recently, Lee et al , implemented the synergistic action of HELP and HEDE in steel based on the so-called unified mechanics theory. The theory quantifies material degradation by the total specific entropy production rate.…”

Section: Knowledge Base About Hementioning

confidence: 99%

Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Yu,

Díaz,

et al. 2024

Chem. Rev.

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Hydrogen is considered a clean and efficient energy carrier crucial for shaping the net-zero future. Large-scale production, transportation, storage, and use of green hydrogen are expected to be undertaken in the coming decades. As the smallest element in the universe, however, hydrogen can adsorb on, diffuse into, and interact with many metallic materials, degrading their mechanical properties. This multifaceted phenomenon is generically categorized as hydrogen embrittlement (HE). HE is one of the most complex material problems that arises as an outcome of the intricate interplay across specific spatial and temporal scales between the mechanical driving force and the material resistance fingerprinted by the microstructures and subsequently weakened by the presence of hydrogen. Based on recent developments in the field as well as our collective understanding, this Review is devoted to treating HE as a whole and providing a constructive and systematic discussion on hydrogen entry, diffusion, trapping, hydrogen–microstructure interaction mechanisms, and consequences of HE in steels, nickel alloys, and aluminum alloys used for energy transport and storage. HE in emerging material systems, such as high entropy alloys and additively manufactured materials, is also discussed. Priority has been particularly given to these less understood aspects. Combining perspectives of materials chemistry, materials science, mechanics, and artificial intelligence, this Review aspires to present a comprehensive and impartial viewpoint on the existing knowledge and conclude with our forecasts of various paths forward meant to fuel the exploration of future research regarding hydrogen-induced material challenges.

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Section: Knowledge Base About Hementioning

confidence: 99%

Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Yu,

Díaz,

et al. 2024

Chem. Rev.

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Comparative evaluation of fatigue life estimation under variable amplitude loading through damage models based on entropy

Rodríguez‐Reyes,

Abúndez‐Pliego,

Petatan‐Bahena

et al. 2024

Fatigue Fract Eng Mat Struct

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Three fatigue damage models based on entropy, originally developed for constant amplitude loading, were assessed and compared to each other aimed at stating whether its applicability can be extended towards variable amplitude loading conditions. A variable amplitude loading history, applied on a 2024‐T3 aluminum alloy reported in the literature, was processed using both rainflow cycle counting and spectral techniques to transform it into a distribution of simple processes with constant amplitudes, then the damage models were assessed under the new loading conditions. The results showed that the model by Khonsari, combined with the rainflow technique, exhibited the highest accuracy with regard to the referenced experimental results with a −0.67 standard deviation from the average data and a 16% error from the median. Therefore, it is possible to assess the fatigue damage accumulation in metallic materials under variable amplitude loading through a thermodynamic approach with models developed for constant amplitude loading.

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Unified Mechanics of Metallic Structural Materials

Cited by 2 publications

References 61 publications

Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Comparative evaluation of fatigue life estimation under variable amplitude loading through damage models based on entropy

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