Investigation on CT characterization of pore structure in nylon-uncured rubber composite from a microscopic view

Li, Yong; Chi, Yanmeng; Han, Shanling; Miao, Yuqing; Chen, Long

doi:10.1038/s41598-021-95178-1

Cited by 4 publications

(1 citation statement)

References 18 publications

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“…Yong Li et al applied the X-ray three-dimensional (3D) microscope to nylon and nylon-rubber composites separately. Utilizing the 3D visualization program, a three-dimensional reconstruction and pore-fracture network model are created, followed by quantitative data and comparative analysis [9] .…”

Section: Introductionmentioning

confidence: 99%

Investigation on pore characteristics of carbon fiber composite using micro-CT

Chi¹,

Han²,

Miao³

et al. 2023

International Conference on Optoelectronic Materials and Devices (ICOMD 2022)

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Carbon fiber reinforced resin matrix composite (CFRP) has been widely used in aerospace, military and other fields because of its low density and high strength. In composite components, the reliability of materials is significantly impacted by flaws like bubbles. The microscopic CT (computed tomography) technique is suitable for identifying material flaws. This paper takes CFRP as an example to study the pore structure characteristics. The porosity of the sample is 18.66%. Three distinct areas of the carbon fiber were chosen simultaneously, It makes up 98.58% of the pore size in the ROI (regions of interest)-1 area when the pore diameter is between 200μm and 400μm. When the pore size is 41.98-131μm, 98.58% of the total pore size is represented. The inner pore diameter of ROI-3 is 41.98-52.90μm, and there are 31,023 pores in total, which is 42.35% of all pores. The fractal dimensions of cuboid pore models in three distinct regions are centered in the ranges 1. 62-1.68, 1.52-1.55, and 1.35-1.38, respectively. This suggests that a significant portion of the pores at the microscale or even smaller scale are determined by the number of pores and that the filling capacity of pores varies, which is extremely important for the subsequent cross-scale seepage behavior and seepage law of composite materials.

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Section: Introductionmentioning

confidence: 99%

Investigation on pore characteristics of carbon fiber composite using micro-CT

Chi¹,

Han²,

Miao³

et al. 2023

International Conference on Optoelectronic Materials and Devices (ICOMD 2022)

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Mesoscopic Tensile Deformation of Steel Cord with Diverse Layered Nonuniformity Based on Microcomputed Tomography Optimizing Simulation Model

Li,

Ma,

Kong

et al. 2024

steel research int.

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The finite‐element analysis plays a crucial role in enhancing the quality and predicting the safety of steel cord. The conventional parametric model for finite‐element analysis often overlooks the inhomogeneity of steel cord, making it difficult to achieve precise simulation. This article utilizes microcomputed tomography to track the mesoscopic deformation of real steel cord during stretching, reconstructing 3D digital images and quantitatively analyzing the corresponding rule for an optimized finite‐element modeling method. In comparison to the parametric model's experimental deviation of 28.37% in strain, the actual structural tensile model aligns with the tensile test with a deviation of only 2.88%, indicating high processing quality. In addition, when simulating the impact of layered nonuniformity on the fracture strain of cords, it is observed that a small degree of nonuniformity leads to an increase in compression between the cord filaments and subsequently enhances the fracture strain. This study provides a practical and dependable quantitative analysis on a mesoscopic scale to optimize the design and production of cords.

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