Experimental and Characterization Study on Mechanical Behavior and Failure Mechanism of Light-weight Fibrous Network Materials

ZHANG Yao; JI Wei

doi:10.19554/j.cnki.1001-3563.2025.19.003

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Packaging Engineering ›› 2025, Vol. 46 ›› Issue (19) : 24-30. DOI: 10.19554/j.cnki.1001-3563.2025.19.003

Special Topic on Protective Metamaterial and MetastructureAgainst Impact

Experimental and Characterization Study on Mechanical Behavior and Failure Mechanism of Light-weight Fibrous Network Materials

ZHANG Yao^*, JI Wei

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Abstract

The work aims to explore the macroscopic mechanical properties of fibrous network materials and the intrisinc mechanism of their unique network microstructure deformation and systematically investigate the mechanical behavior of phenolic-impregnated carbon fibrous network materials by macroscopic and mesoscopic mechanical analysis. The anisotropic mechanical behaviors of the in-plane and out-of-plane directions of fibrous network materials were studied through uniaxial compression and cyclic compression mechanical experiments. Research showed that the stiffness and strength of the materials in the in-plane direction were superior to those in the out-of-plane direction. Further, in situ observation methods were used to characterize the macroscopic mechanical properties and typical failure modes. The work reveals the intrinsic correlation mechanism between typical deformation mechanisms such as fiber segment bending, buckling, and inter-fiber contact sliding in microstructures and the macroscopic failure types of fibrous network structures, and clarifies the intrinsic mechanism of macroscopic anisotropy in fibrous network structures. These materials are expected to be applied in heat insulation and cushioning functional packaging.

Key words

fibrous network structures / mechanical properties / damage evolution

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ZHANG Yao, JI Wei. Experimental and Characterization Study on Mechanical Behavior and Failure Mechanism of Light-weight Fibrous Network Materials[J]. Packaging Engineering. 2025, 46(19): 24-30 https://doi.org/10.19554/j.cnki.1001-3563.2025.19.003

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