Microstructure generation and full-field multi-scale analyses for short fiber reinforced thermoplastics: Application to PA66GF composites

Composite Structures, Journal Year: 2024, Volume and Issue: 341, P. 118175 - 118175

Published: May 9, 2024

Language: Английский

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Multiscale damage analysis of through-thickness woven composites under in-plane and out-of-plane loadings: A coupled shell-based model

Composite Structures, Journal Year: 2025, Volume and Issue: unknown, P. 118969 - 118969

Published: Feb. 1, 2025

Language: Английский

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Thermomechanical response of high performance benzoxazine/epoxy polymers based nanocomposites

High Performance Polymers, Journal Year: 2025, Volume and Issue: unknown

Published: March 14, 2025

This study investigates the thermomechanical performance of advanced nanocomposites reinforced with Multi-Walled Carbon Nanotubes (MWCNTs) and Aluminum Nitride nanoparticles (AlN), using two distinct thermosetting resins: polybenzoxazine (PBz) epoxy. PBz was selected for its exceptional thermal stability, radiation shielding, low moisture absorption, mechanical resilience, while epoxy offers benchmark processing efficiency, structural reliability, cost-effectiveness, superior properties. Nanocomposites containing 1 wt.% AlN or MWCNTs were prepared characterized. Thermal properties evaluated through Differential Scanning Calorimetry (DSC) Thermogravimetric Analysis (TGA), behavior assessed Dynamic Mechanical (DMA). The characterized quasi-static tensile creep tests, as well dynamic compression tests Split Hopkinson Pressure Bar (SHPB). results demonstrated significant improvements in both stability strength. Notably, under high strain rates, exhibited a 125.52% increase failure stress compared to neat resin, showed 58.6% improvement. In contrast, provided moderate improvements, PBz-1%AlN epoxy-1%AlN achieving 57.28% 24.4% increases stress, respectively. also highlights inherent advantages over epoxy, PBz-based consistently outperformed their counterparts terms strength, resistance response. comparative analysis synergistic effects nanofillers optimizing nanocomposites. These findings provide crucial insights potential applications high-performance within aerospace, automotive, defense industries, where lightweight materials durability, are critical.

Language: Английский

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Advances in Multiscale Modeling and Mechanical Properties Characterization of 3D‐Braided Composites

Advanced Engineering Materials, Journal Year: 2024, Volume and Issue: 26(22)

Published: Oct. 14, 2024

The 3D‐braided composites have been widely used in aerospace and other fields due to the excellent mechanical properties, designability, resistance delamination. Accurately analyzing evaluating properties of braided composite structures is key, which successfully designs related structural components. However, complex internal meso–microscopic structures, directly establishing a solid structure model predict behavior poses certain challenges. multiscale research methods are type approach that studies cross‐scale characteristics at macro–meso–microscopic scales couples relevant into whole. Its emergence provides possibility for overall performance composites. In this article, first, analysis models 3D‐multidirectional‐braided reviewed, then theoretical numerical progress on static dynamic regular components summarized. addition, distortion variation geometric shapes structure; therefore, also special‐shaped Finally, key problems presented.

Language: Английский

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Evaluation of Effect of Microstructure Size on Plastic Processes of Polycrystalline Metal Using Second-Order Homogenization

Published: Jan. 1, 2024

Language: Английский

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