Micromorphology and fractal evaluation of Dinizia excelsa Ducke wood under three different cut conditions by atomic force microscopy

Conceição, William Silva da; Matos, Robert Saraiva; Bufalino, Lina; Ramos, Glenda Quaresma; Zayas, Fidel Guerrero; Filho, Henrique Duarte da Fonseca

doi:10.1016/j.measurement.2021.109490

Cited by 5 publications

(1 citation statement)

References 38 publications

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“…The work also uses furrows analysis allowing the comparison of the micro-network for characteristic fracture zones. The study supplies the mean depth of the furrows, as well as the density of the furrows [32,33]. Additionally, SEM pictures were made using the PFIB-SEM technique to obtain a cross-section of the post-failure of a 10HNAP steel specimen.…”

Section: Surface Topography Measurementmentioning

confidence: 99%

The impact of surface slope and calculation resolution on the fractal dimension for fractures of steels after bending-torsion fatigue

Macek

2022

Surf. Topogr.: Metrol. Prop.

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The article presents the results of the fractal dimension measurements on the fatigue fracture surfaces of 10HNAP and S355J2 steels specimens after combined bending-torsion fatigue. For smooth and ring-notched specimens, three loading conditions were analyzed: (1) bending; (2) bending-torsion; and (3) torsion fatigue. Post-failure surface topography measurements were carried out on the entire fracture surfaces using an optical profilometer. The fractal dimension was computed with general slope and after removing them by leveling operation, as well as with two different resolutions. The analysis of the fractal dimension delineated by the enclosing boxes method (EBM) allowed to formulate guidelines that, in terms of further estimation of the method of failure, the optimum is extra-fine resolution without leveling.

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Section: Surface Topography Measurementmentioning

confidence: 99%

The impact of surface slope and calculation resolution on the fractal dimension for fractures of steels after bending-torsion fatigue

Macek

2022

Surf. Topogr.: Metrol. Prop.

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The correlation of fractal dimension to fracture surface slope for fatigue crack initiation analysis under bending-torsion loading in high-strength steels

et al. 2023

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Volume fractal and surface fractal analysis of the pore structure of natural and heat-treated spruce wood using the mercury intrusion porosimetry test

Gao

Wang

et al. 2022

Holzforschung

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Fractal geometry describes the complex pore structure in natural and heat-treated wood and the relationship between pore structure and wood properties, such as strength, heat conductivity, and transport properties. However, the fractal types and the scale-dependent properties of natural and heat-treated wood remain unclear. In this study, comprehensive fractal analysis of the pore structure of natural and heat-treated spruce wood was carried out based on mercury intrusion porosimetry data. Both the volume fractal and surface fractal of natural and heat-treated wood were determined. The results showed that the two fractal types had different scale-dependent fractal properties. Four regions were identified in the pore structures. A volume fractal region was identified for pores in the region of 2–90 μm, while a surface fractal region was identified for pores in the region of 90 nm–7 μm. The pore structure in the region of 2–90 μm that corresponded to the large pore (the lumina in the cell) range showed strong volume fractal properties, and the fractal dimensions were 2.645–2.884. The pore structure in the region of 90 nm–7 μm that corresponded to the small pore (voids on or in cell walls) range showed strong surface fractal properties, and the fractal dimensions were 2.323–2.999. The range of fractal regions was hardly affected by the heat treatment atmospheres. These results showed that fractal geometry can be used to characterize the pore structures of natural and heat-treated wood. These findings are expected to explain the differences in properties between natural and heat-treated wood in the future.

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Micromorphology and fractal evaluation of Dinizia excelsa Ducke wood under three different cut conditions by atomic force microscopy

Cited by 5 publications

References 38 publications

The impact of surface slope and calculation resolution on the fractal dimension for fractures of steels after bending-torsion fatigue

The impact of surface slope and calculation resolution on the fractal dimension for fractures of steels after bending-torsion fatigue

The correlation of fractal dimension to fracture surface slope for fatigue crack initiation analysis under bending-torsion loading in high-strength steels

Volume fractal and surface fractal analysis of the pore structure of natural and heat-treated spruce wood using the mercury intrusion porosimetry test

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