Accurate prediction of discontinuous crack paths in random porous media via a generative deep learning model

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(40)

Published: Sept. 25, 2024

Pore structures provide extra freedoms for the design of porous media, leading to desirable properties, such as high catalytic rate, energy storage efficiency, and specific strength. This unfortunately makes media susceptible failure. Deep understanding failure mechanism in microstructures is a key customizing high-performance crack-resistant media. However, solving fracture problem materials computationally intractable due highly complicated configurations microstructures. To bridge structural responses random unique generative deep learning model developed. A two-step strategy proposed deconstruct process, which sequentially corresponds elastic deformation crack propagation. The geometry microstructure translated into scalar field an intermediate variable, then, path predicted. neural network precisely characterizes strong interactions among pore structures, multiscale behaviors fracture, discontinuous essence Crack paths are accurately predicted by simply inputting images targets, without any additional input physical information. prediction enjoys outstanding performance with accuracy 90.25% possesses robust generalization capability. present record so far, accomplished within second. study opens avenue high-throughput evaluation heterogeneous complex geometries.

Language: Английский

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Injectable and drug-loaded gelatin methacrylate and carboxymethylated-sulfated xanthan gum hydrogels as biomimetic mineralization constructs

Carbohydrate Polymers, Journal Year: 2025, Volume and Issue: 355, P. 123354 - 123354

Published: Feb. 4, 2025

Language: Английский

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Sea anemone-inspired smart epoxy coating with mechanical energy relieving capability for improved corrosion protection in simulated marine environment

Progress in Organic Coatings, Journal Year: 2025, Volume and Issue: 201, P. 109110 - 109110

Published: Feb. 7, 2025

Language: Английский

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Fabrication of bimetallic interpenetrating structures with enhanced impact resistance via 3D-printing of high-entropy alloy lattices and vacuum melt infiltration of Al-based alloys

Virtual and Physical Prototyping, Journal Year: 2025, Volume and Issue: 20(1)

Published: Feb. 16, 2025

Language: Английский

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Recent Advances of Auxetic Metamaterials in Smart Materials and Structural Systems

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Abstract Auxetic metamaterials refer to materials and structures with extraordinary deformation, i.e., transverse expansion (contraction) under uniaxial tension (compression). In recent decades, a very wide range of innovative functional performance has been discovered stemming from this behavior. This desirable exhibition adaptivity, programmability, functionality provides great potential in soft intelligent systems. However, thus far, the mainstream research on auxetic focused subjective design, monotonic mechanical properties, passive tunability. review thorough overview classical properties applications, primary objective proposing new roadmap auxetics for advances interdisciplinary field. The fundamental works are categorized different configurations mechanisms. particular, integration shape morphing, actuation, sensing, multiphysical response, inverse design is reviewed detail. To accelerate development smart structural systems, applications generalized into robotics (outside body), human–machine interaction (surrounding healthcare devices (inside body). Finally, several significant topics emphasized theory, material choice, manufacturing technique, applications.

Language: Английский

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Characterization of Rate-Dependent Behaviors of 3D Printed Material under Shear Impact

International Journal of Impact Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 105314 - 105314

Published: March 1, 2025

Language: Английский

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Fabrication of mechanically robust nanoporous ZrSiO₄ ceramics at low temperature with a low doping level of Mn dopant

International Journal of Applied Ceramic Technology, Journal Year: 2024, Volume and Issue: 21(3), P. 1954 - 1964

Published: Jan. 3, 2024

Abstract Zircon (ZrSiO 4 ) ceramics have been widely used in many fields due to their excellent physical and chemical properties. However, ZrSiO typically possess moderately low mechanical properties, which hinders wider application. Meanwhile, elevated temperatures (∼1500°C) are required obtain high‐purity synthetic ceramics, is time‐ energy‐consuming. In the present study, we prepared mechanically robust at temperature (∼1170°C) with a doping level of Mn dopant (<2 mol%). The ceramic processed by hot isostatic pressing .5 mol% achieved highest flexural strength (512 MPa), elastic modulus (341 GPa), nanohardness (20.8 GPa). These values significantly higher than conventional ceramics. strengthening mechanisms were attributed formation homogeneously‐distributed nanopores incomplete densification submicron grains (∼300 nm). avoided stress concentration deflected microcracks during loading, endowed grain refinement strengthening. results reported this study would offer guidance fabricate dopant.

Language: Английский

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Toughing epoxy nanocomposites with Graphite-Nanocellulose layered framework

Composites Part A Applied Science and Manufacturing, Journal Year: 2024, Volume and Issue: 182, P. 108159 - 108159

Published: March 19, 2024

Language: Английский

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Together but not scrambled: A perspective on chaotic printing/bioprinting

Aggregate, Journal Year: 2024, Volume and Issue: 5(4)

Published: April 11, 2024

Abstract Structures in nature are often multi‐material, and their structures have a fine balance between segregation aggregation (mixed, but not scrambled) that provides functionality. Chaotic fabrication, technology exploits the ability of chaotic advection to create predictable reproducible multilayered structures, excels at producing materials where this can be achieved finely tuned. This method is based on use mixing systems, which produce constructs with highly organized internal micro‐architecture simple cost‐effective way. manuscript perspective how printing great enabler manufacture advanced materials, including living tissues. may overcome many critical hurdles currently faced manufacturing biofabrication (e.g., creating wide array interfaces, reaching high resolutions rapidly low cost, densely vascularized tissues). The introduces technology, explains idea originated, presents timeline recapitulation milestones so far, describes main characteristics, advantages, limitations, challenges concludes future perspectives evolution versatile method.

Language: Английский

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Significantly Promoting the Thermal Conductivity and Machinability of Negative Thermal Expansion Alloy via In Situ Precipitation of Copper Networks

Advanced Science, Journal Year: 2024, Volume and Issue: 11(40)

Published: Aug. 28, 2024

Abstract Rapid advancements in electronic devices yield an urgent demand for high‐performance packaging materials with high thermal conductivity, low expansion, and great mechanical properties. However, it is a challenge current design philosophies to fulfill all the requirements simultaneously. Here, effective strategy proposed significantly promoting conductivity machinability of negative expansion alloy (Zr,Nb)Fe 2 through eutectic precipitation copper networks. The dual‐phase exhibits isotropic chips‐matched coefficient enhancement exceeding 200% compared , along ultimate compressive strength 550 MPa. addition reorganizes composition which smooths magnetic transition shifts toward higher temperature, resulting linear wide temperature range. highly fine lamellae construct networks within serving as highways heat transfer electrons phonons. situ forming also facilitates properties by enhancing interfacial bonding bearing additional stress after yielding . This work provides novel alloys via

Language: Английский

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