Anti-Erosion Function in Animals and its Biomimetic Application

Han, Zhiwu; Zhang, Junqiu; Ge, Chao; You, Long; Jiang, Jialian; Liu, Qingping; Liu, Ren

doi:10.1016/s1672-6529(09)60217-1

Cited by 40 publications

(21 citation statements)

References 15 publications

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“…However, at least for solid particle erosion, another school of thought exists, which in fact promotes rugged, rough surfaces, inspired by the antierosion performance of skins and shells of desert animals. [124][125][126] The antierosion coatings were developed with bionic functional surfaces inspired by desert scorpions (who supposedly should sustain permanent sand erosion in desert). It was proved that grooved surface shows best erosion protection, as compared with smooth and convex surfaces.…”

Section: Structured Coatings Surfaces: Surface Roughnessmentioning

confidence: 99%

Toolbox for optimizing anti‐erosion protective coatings of wind turbine blades: Overview of mechanisms and technical solutions

Mishnaevsky

2019

Wind Energy

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Factors and structural parameters of coatings influencing the efficiency of protective coating systems against rain erosion of wind turbine blades are reviewed. The possibilities to enhance the attenuation of wave energy from droplet impact, increase damping and varying stiffness, creating interfaces for wave reflection, adding reinforcement for wave scattering, and creating additional layers or skeleton‐like reinforcing or wave absorbing structures, are discussed in the paper. Formulas for quantitative estimation of these effects as well as qualitative relationships between the structural parameters of coatings and their performance are presented. Recommendations and promising directions for the improvement of the protective coating systems for rain erosion protection of wind turbine blades are presented.

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Section: Structured Coatings Surfaces: Surface Roughnessmentioning

confidence: 99%

Toolbox for optimizing anti‐erosion protective coatings of wind turbine blades: Overview of mechanisms and technical solutions

Mishnaevsky

2019

Wind Energy

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“…has an important effect on the erosion rate. The maximum erosion of ductile material occurs at angles between 20-30 ∘ [17]. The probability of particle impact angle distribution on the blade surface is shown in Figure 8.…”

Section: Particles Impact Angle Analysis Particle Impact Anglementioning

confidence: 99%

“…In nature, some animals, for example, scorpion, are living in the sand and other gas/solid mixed-media environment, which exhibit excellent antierosion function under gas/solid mixed media environment [16]. Han et al [17] showed that scorpions through the adaptation of the living environment and their own evolution, the formation of a special distribution of the convex and groove on the back, which can change the state of the surface boundary layer flow, and hence, reduce erosion of surface. Figure 1 illustrates the morphology of desert scorpion and biomimetic modeling.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Erosion Caused by Biomimetic Axial Fan Blade

Zhang

Han

Cao

et al. 2013

Advances in Materials Science and Engineering

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Damage caused by erosion has been reported in several industries for a wide range of situations. In the present work, a new method is presented to improve the erosion resistance of machine components by biomimetic method. A numerical investigation of solid particle erosion in the standard and biomimetic configuration blade of axial fan is presented. The analysis consists in the application of the discrete phase model, for modeling the solid particles flow, and the Eulerian conservation equations to the continuous phase. The numerical study employs computational fluid dynamics (CFD) software, based on a finite volume method. User-defined function was used to define wear equation. Gas/solid flow axial fan was simulated to calculate the erosion rate of the particles on the fan blades and comparatively analyzed the erosive wear of the smooth surface, the groove-shaped, and convex hull-shaped biomimetic surface axial flow fan blade. The results show that the groove-shaped biomimetic blade antierosion ability is better than that of the other two fan blades. Thoroughly analyze of antierosion mechanism of the biomimetic blade from many factors including the flow velocity contours and flow path lines, impact velocity, impact angle, particle trajectories, and the number of collisions.

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“…However, such practices are not economical. Another alternative method is to add a special structure that changes the flow pattern [6,7]. Researchers control a flow pattern by these structures so as to change the situation in which contact between solid particles and surfaces occur, thereby protecting the materials [8].…”

Section: Introductionmentioning

confidence: 99%

Design of a Bio-Inspired Anti-Erosion Structure for a Water Hydraulic Valve Core: An Experimental Study

Wang

Zhang

et al. 2019

Biomimetics

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Animals and plants have numerous active protections for adapting to the complex and severe living environments, providing endless inspiration for extending the service life of materials and machines. Conch, a marine animal living near the coast and chronically suffering from the erosion of sand in water, has adapted to the condition through its anti-erosion conch shell. Romanesco broccoli, a plant whose inflorescence is self-similar in character, has a natural fractal bud’s form. Coupling the convex domes on the conch shell and the fractal structure of Romanesco broccoli, a novel valve core structure of a water hydraulic valve was designed in this paper to improve the particle erosion resistance and valve core’s service life. Three models were built to compare the effect among the normal structure, bionic structure, and multi-source coupling bionic structures, and were coined using 3D printing technology. A 3D printed water hydraulic valve was manufactured to simulate the working condition of a valve core under sand erosion in water flow, and capture the experimental videos of the two-phase flow. Furthermore, based on the water hydraulic platform and one-camera-six-mirror 3D imaging subsystem, the experiment system was established and used to compare the performance of the three different valve cores. As a result, the results showed that the coupling bionic structure could effectively improve the anti-erosion property of the valve core and protect the sealing face on the valve core from wear. This paper presents a novel way of combining advantages from both animal (function bionic) and plant (shape bionic) in one component design.

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Anti-Erosion Function in Animals and its Biomimetic Application

Cited by 40 publications

References 15 publications

Toolbox for optimizing anti‐erosion protective coatings of wind turbine blades: Overview of mechanisms and technical solutions

Toolbox for optimizing anti‐erosion protective coatings of wind turbine blades: Overview of mechanisms and technical solutions

Numerical Analysis of Erosion Caused by Biomimetic Axial Fan Blade

Design of a Bio-Inspired Anti-Erosion Structure for a Water Hydraulic Valve Core: An Experimental Study

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