Experimental Investigation of Ice Adhesion

Alansatan, Sait; Papadakis, Michael

doi:10.4271/1999-01-1584

Cited by 6 publications

(4 citation statements)

References 10 publications

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“…Deionized water was used as water impurities could result in a large discrepancy in ice adhesion strength. 50 The coatings were all applied to 30 mm diameter substrate disks and adhered to an aluminum fixture, called a boss, using hot melt adhesive (dry film adhesive #224, Lenderink Technologies, USA). The combined test piece (combination of the substrate disk and boss piece) was then attached to a vertical pipe and placed in the cold chamber and under the Mod-1 nozzle.…”

Section: Experimental Methodsmentioning

confidence: 99%

Atmospheric Ice Adhesion on Water-Repellent Coatings: Wetting and Surface Topology Effects

et al. 2015

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Recent studies have shown the potential of water-repellent surfaces such as superhydrophobic surfaces in delaying ice accretion and reducing ice adhesion. However, conflicting trends in superhydrophobic ice adhesion strength were reported by previous studies. Hence, this investigation was performed to study the ice adhesion strength of hydrophobic and superhydrophobic coatings under realistic atmospheric icing conditions, i.e., supercooled spray of 20 μm mean volume diameter (MVD) droplets in a freezing (-20 °C), thermally homogeneous environment. The ice was released in a tensile direction by underside air pressure in a Mode-1 ice fracture condition. Results showed a strong effect of water repellency (increased contact and receding angles) on ice adhesion strength for hydrophobic surfaces. However, the extreme water repellency of nanocomposite superhydrophobic surfaces did not provide further adhesion strength reductions. Rather, ice adhesion strength for superhydrophobic surfaces depended primarily on the surface topology spatial parameter of autocorrelation length (Sal), whereby surface features in close proximities associated with a higher capillary pressure were better able to resist droplet penetration. Effects from other surface height parameters (e.g., arithmetic mean roughness, kurtosis, and skewness) were secondary.

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Section: Experimental Methodsmentioning

confidence: 99%

Atmospheric Ice Adhesion on Water-Repellent Coatings: Wetting and Surface Topology Effects

et al. 2015

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“…Since the heat transfer coefficient of air is much lower than that of the bare substrate, the freezing time is significantly longer. According to classical nucleation theory. J normalt normalo normalt normala normall = J normalb normalu normall normalk V + J normalw − normala S normalw − normala + J normalw − normals S normalw − normals where J bulk , J w–a , and J w–s represent the spontaneous nucleation rate inside water, the nucleation rate of water droplets contacting air, and water droplets reaching the substrate surface, respectively; V , S w–a , and S w–s represent the volume of a water droplet, the area between air and water droplets, and the water droplet and substrate, respectively …”

Section: Resultsmentioning

confidence: 99%

“…where J bulk , J w−a , and J w−s represent the spontaneous nucleation rate inside water, the nucleation rate of water droplets contacting air, and water droplets reaching the substrate surface, respectively; V, S w−a , and S w−s represent the volume of a water droplet, the area between air and water droplets, and the water droplet and substrate, respectively. 28 Figure 7b displays the icing mechanism diagram of droplets on the biomimetic SHS. In general, the nucleation rate inside water droplets depends on uniform nucleation.…”

Section: J J V J S J Smentioning

confidence: 99%

Superhydrophobic Surfaces with Excellent Ice Prevention and Drag Reduction Properties Inspired by Iridaceae Leaf

Zhou,

Feng,

Wang

et al. 2024

Langmuir

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The anti-icing and drag-reduction properties of diverse microstructured surfaces have undergone extensive study over the past decade. Nonetheless, tough environments enforce stringent demands on the composite characteristics of superhydrophobic surfaces (SHS). In this study, fresh composite structures were fabricated on a metal substrate by nanosecond laser machining technology, drawing inspiration from the hardy plant Iridaceae. The prepared sample surface mainly consists of a periodic microrhombus array and irregular nanosheets. To comprehensively investigate the effect of its special structure on surface properties, three surfaces with different sizes of rhombic structures were used for comparative analysis, and the results show that the SH-S2 sample is optimal. This can significantly delay the freezing time by an impressive 1404 s at −10 °C while revealing the sample surface anti-icing strategy. In addition, the rheological experiments determined over 300 μm of slip length for the SH-S2 sample, and the drag reduction rate of the surface reaches nearly 40%, which is well aligned with the results of the delayed icing experiments. Finally, the mechanical durability of the SH-S2 surface was investigated through scratch damage, sandpaper abrasion, reparability trials, and icing and melting cycle tests. This research presents a new approach and methodology for the application of SHS on polar ship surfaces.

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“…There is no correlation between ice adhesion strength and surface roughness. The study of Sait Alansatan et al showed that the ice adhesion strength varies with the surface roughness change, but there is no clear trend between them [20].…”

Section: Mechanical Theorymentioning

confidence: 99%

A Brief Review of Blade Surface Icing Adhesive Theories for Wind Turbines

Shen,

2023

Wind Turbine Icing - Recent Advances in Icing Characteristics and Protection Technology

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In cold and humid areas, ice easily accumulates on the blade surface of the wind turbine. The icing on the blade surface causes the power efficiency of wind turbines to decline, even leading to safety accidents. In order to research and develop efficient anti-icing and de-icing technologies, exploring the adhesive properties between ice and the blade surface is necessary. Therefore, in this paper, the main theories of the icing adhesive mechanism have been briefly summarized, including mechanical, electronic, and wetting theories, from the aspechts of theory and experimental research, which can provide a reference for researching icing mechanisms and the development of anti-icing and de-icing technologies for wind turbines.

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Experimental Investigation of Ice Adhesion

Cited by 6 publications

References 10 publications

Atmospheric Ice Adhesion on Water-Repellent Coatings: Wetting and Surface Topology Effects

Atmospheric Ice Adhesion on Water-Repellent Coatings: Wetting and Surface Topology Effects

Superhydrophobic Surfaces with Excellent Ice Prevention and Drag Reduction Properties Inspired by Iridaceae Leaf

A Brief Review of Blade Surface Icing Adhesive Theories for Wind Turbines

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