Measurement approaches for the analysis of soil layer by microparticle adhesion

Casari, Nicola; Fortini, Annalisa; Pinelli, Michele; Suman, Alessio; Vulpio, Alessandro; Zanini, Nicola

doi:10.1016/j.measurement.2021.110185

Cited by 10 publications

(5 citation statements)

References 58 publications

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“…This standard powder (ISO 12103-1:2016 standard [32]) is composed of silica dioxide (75%), aluminum trioxide (20%), and other minor oxides (magnesium, iron, etc. ), and it is commonly used for testing filtration systems and machine degradation [33]. The erosion resistance was evaluated by the sample weight loss, measured using a Kern ABT 100-5NM (Kern, Balingen, Germany) analytical balance with an accuracy resolution of 0.01.…”

Section: Methodsmentioning

confidence: 99%

Effects of Heat Treatment and Erosion Particle Size on Erosion Resistance of a Hypereutectic High-Chromium Cast Iron

Suman,

Fortini

2024

Coatings

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This research addresses the erosive resistance of a hypereutectic high-chromium cast iron subjected to solid particle erosion. The study stems from a specific application of high-chromium cast iron, i.e., the critical surfaces of large industrial fans operating in a cement clinker grinding plant where such damage is a limiting factor for the components’ lifespan. A dedicated experimental investigation on the impact of substrate microstructure and erodent particle size on erosion resistance was set. The experimental campaign, conducted on a dedicated test bench per the ASTM G76 standard, comprised the analysis of the as-received, tempered, and destabilized conditions for the cast iron. From a preliminary image analysis of the microstructural features, two diameters of the erodent powder for the erosion tests were defined. The observed erosion rate decreased with the increase in the mean particle diameter of the erodent, indicating more severe erosive conditions for smaller particles. From the analysis of the worn surfaces, it was possible to highlight the involved mechanisms concerning the considered test combinations. For the as-received condition, the erosion rate with the larger mean particle diameter of the erodent decreased three times compared to the smaller one. For the heat-treated conditions, the erosion rate was halved with the larger mean particle diameter of the erodent. The proposed analysis, intended to acquire more insight into the limiting factor for the components’ lifespan for erosive wear damage, proved that erosion resistance is not dependent on the material’s hardness. The contribution of the mean particle diameter of the erodent is predominant compared to the substrate conditions.

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Section: Methodsmentioning

confidence: 99%

Effects of Heat Treatment and Erosion Particle Size on Erosion Resistance of a Hypereutectic High-Chromium Cast Iron

Suman,

Fortini

2024

Coatings

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“…Soil adhesion is a very complex integrated mechanical behavior, and the current method of theoretical analysis to establish a mathematical model of adhesion between the soil and its foreign matter is not feasible [14]. Measurement of soil adhesion still mainly relies on the direct measurement of soil adhesion instruments [15] .1833 SCHIBLER first began the study of soil adhesion, and determination of soil adhesion to iron and wood in the materials of tillage implements, FOUNTAINE, and other metal disc as a measuring disc to test the soil normal adhesion, NICHCLOS and other research on tangential adhesion. In the 1960s, Britain and Japan developed soil adhesion meters [16] , and China also developed SF-1 soil adhesion measuring devices in the 1970 s [17] .…”

Section: Fig 1 Cotton Planting Patterns In Xinjiang Regionmentioning

confidence: 99%

Experimental study on the adhesion force of ground film in sandy soil in South Xinjiang

Guo,

Bai,

Wang

et al. 2024

Preprint

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Xinjiang is the most important cotton producing area in China. In the cotton planting process, mulching drip irrigation technology is usually used, which has the functions of moisturizing and inhibiting weed growth, etc. After one planting cycle, residual mulching film in the soil will adhere to the soil, resulting in difficult mechanical recovery of mulching film. At present, the influence of various factors on the adhesion between soil and mulching film is unclear. In order to solve this problem, single-factor experiment and multi-factor experiment were used to verify the variation rule of soil adhesion. The results of single factor experiment showed that the effect of soil particle size on its adhesion increased first and then decreased, and the maximum adhesion appeared in the particle size of 8.47um to 33.87um. The influence of soil contact time on the adhesion of mulch film increased first and then stabilized, and reached the peak value at 5 minutes. When soil is affected by pressure, soil adhesion increases first and then decreases, and reaches the maximum at 1500N. Soil moisture content also affected the adhesion, reaching the maximum value at 22.87%. Multi-factor analysis showed that contact time, moisture content and particle size had significant effects together. The regression equation was established to predict the adhesion between film and soil, which provided theoretical support for the treatment of residual film and mechanized recovery.

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“…The SFS allows the obtainment of three-dimensional information starting from a two-dimensional detection. As shown in [37], this technique could be useful to estimate the deposit thickness even if, due to the mathematical constraints, the results have to be validated after a calibration procedure, reducing the applicability to on-field detection.…”

Section: Comparisonmentioning

confidence: 99%

“…As shown in the previous paragraph, this technique is helpful in making a qualitative assessment of the contamination. A more precise detection to move this analysis from a qualitative to a quantitative framework should be based on the study of shading (SFS techniques) and the possibility of checking the image detection with options based on the quantitative assessment of the deposited layer [28,29,37].…”

Section: Remarks and Guidelinesmentioning

confidence: 99%

Compressor fouling detection by image analysis

Suman

Zanini

Pinelli

2023

J. Phys.: Conf. Ser.

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Gas turbine fouling is commonly known as responsible for performance degradation in terms of compression ratio and efficiency. The adhesion of micro-sized particles (soil, soot, salt, etc.) caused the modification of the blade shapes and the surface roughness. Both of these two effects determine the modification of the compressor performance over the unit operation. Due to the lack of capability to forecast the fouling intensity, it could be useful to estimate the fouling intensity during the machine overhaul, collecting strategical data by which a specific characterization of a given machine in a given operating site can be done. The present paper proposes and validates a helpful methodology for estimating the deposit intensity by an image analysis procedure. An image-detection technique has been carried out before and after the contamination process, and, using a subtraction process, a quantitative analysis of the fouled regions can be developed. The results show that, with a careful light and camera setup, the intensity of the deposits can be estimated with an acceptable tolerance band, which allows the possibility of collecting quantitative data on compressor deposits during overhaul operations. This generates a valuable starting point for predicting the overtime degradation of the unit and/or estimating the filtration section efficiency.

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Measurement approaches for the analysis of soil layer by microparticle adhesion

Cited by 10 publications

References 58 publications

Effects of Heat Treatment and Erosion Particle Size on Erosion Resistance of a Hypereutectic High-Chromium Cast Iron

Effects of Heat Treatment and Erosion Particle Size on Erosion Resistance of a Hypereutectic High-Chromium Cast Iron

Experimental study on the adhesion force of ground film in sandy soil in South Xinjiang

Compressor fouling detection by image analysis

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