Relevant bibliographies by topics / Abrasion

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'Abrasion'

Author: Grafiati
Published: 4 June 2021
Last updated: 31 January 2023

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Journal articles on the topic "Abrasion"

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Kouketsu, Fernanda, Daniel Pacholok, Tiago Cousseau, and Carlos Henrique da Silva. "Abrasive wear resistance of idler roll polymeric materials." Surface Topography: Metrology and Properties 10, no. 3 (August 26, 2022): 034002. http://dx.doi.org/10.1088/2051-672x/ac89a2.

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Abstract Idler rolls are an integral part of belt conveyors. Recently, steel idler rolls have been replaced with polymeric ones in low to middle load applications, bringing several advantages due to the polymer’s lightweight and low abrasiveness in the conveyor belt. However, using polymeric material for high load application brings challenges, particularly presenting similar structural and abrasion resistance to steel. This work puts forwards a methodology using a rubber-wheel tribometer to evaluate the abrasion resistance of polymeric idler rolls in their most severe operating condition (halted idler roll) and defines a threshold limit based on the results obtained with steel idler rolls. The methodology was applied to 07 different polymeric materials. To further understand materials abrasions resistance, scratching tests were performed, and the main wear mechanisms, verified by scanning electron microscopy (SEM) and abrasion factor (FAB), were discussed along with the material properties. The main conclusions are: i) some polymeric materials present abrasion resistance similar to steel rolls; ii) the wear micromechanisms, verified by SEM and FAB, are good indicators of abrasion resistance of the materials but insufficient because they do not include temperature and fatigue effects resulting from multi abrasive events; iii) the additive fillers significantly altered the abrasive resistance of materials, although they do not change the material properties significantly.
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Twomey, Dara M., Lauren A. Petrass, and Paul R. Fleming. "Abrasion injuries on artificial turf: A real risk or not?" South African Journal of Sports Medicine 26, no. 3 (September 29, 2014): 91. http://dx.doi.org/10.17159/2413-3108/2014/v26i3a105.

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Abrasion injuries result in damage only to the surface layer of skin and can result in player discomfort and changes in performance. The perceived fear of abrasion injuries on artificial turf playing surfaces has significantly affected the adoption of these surfaces, particularly in sports that involve frequent player-surface interactions. The underreporting of abrasion injuries due to how time-loss injuries are defined and the lack of validity of the current abrasion measurement device highlight the need for more research to understand fully the incidence and nature of abrasions on artificial turf playing surfaces and the effect of these injuries on playing behaviour. Improved reporting of abrasion injuries and a more biofidelic test device could assist in both the development of abrasion-related injury prevention strategies and in dispelling players’ negative perceptions of abrasions on artificial turf.
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Usman, Ediar. "THE INCLINATION OF COASTLINE CHANGES AND ITS IMPLICATION FOR LANDUSE MANAGEMENT OF KARAWANG DISTRICT, WEST JAWA PROVINCE." BULLETIN OF THE MARINE GEOLOGY 24, no. 1 (February 15, 2016): 14. http://dx.doi.org/10.32693/bomg.24.1.2009.11.

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Result of observation at 11 locations and the coastline analysis at year map 1990 published by Bakosurtanal and year map 2005 published by Bappeda of Karawang District shows that the existence of changes of the coastline is caused by abrasion and accretion process. The coastal abrasions are occurred in Muarabaru, South Pusakajaya, Cemarajaya and Tanjungpakis areas. The coastal accretions are occurred in Ciparage - Sukajaya, Mekarpohaci, Cemarajaya - South Pusakajaya, East and West Tanjungpakis areas. During the periods of 15 years the abrasions are occurred with the width of 813,171 ha (8,13171 km2) and the coastal long of 30,637 km, and accretions with the width of 1346,22 ha (13,4622 km2) and the coastal long of 43,313 km. Every year the width of abrasion is about 54,21 ha or about 0,5421 km2/year and the width of accretion is about 89,748 ha/year or 0,8975 km2/year. The growth of coastal area about 89,748 ha/year or 0,8975 km2/year. If the coastal management is conducted at the abrasion coasts, the coastal damage can be decreased, and the coastal growth for the productive landuse can be increased. Keywords: coastline changes, abrasion, accretion, landuse development. Hasil pengamatan pada 11 lokasi dan analisis garis pantai pada peta tahun 1990 yang dipublikasikan oleh Bakosurtanal dan peta tahun 2005 yang dipublikasikan oleh Bappeda Kabupaten Karawang menunjukkan adanya perubahan garis pantai yang disebabkan oleh proses abrasi dan akresi. Pantai abrasi terjadi di daerah Muarabaru, Pusakajaya Selatan, Cemarajaya, Sedari dan Tanjungpakis. Pantai akresi terjadi di daerah Ciparage - Sukajaya, Mekarpohaci, Cemarajaya - Pusakajaya Selatan dan Tanjungpakis Timur & Barat Selama kurun 15 tahun telah terjadi abrasi seluas 813,171 ha (8,13171 km2) dengan panjang pantai 30,637 km, dan akresi seluas 1346,22 ha (13,4622 km2) dengan panjang pantai 43,313 km. Setiap tahun terjadi abrasi seluas 54,21 ha atau sekitar 0,5421 km2/tahun dan akresi seluas 89,748 ha/tahun atau sekitar 0,8975 km2/tahun. Pertumbuhan kawasan pantai masih lebih besar, yaitu sekitar 89,748 ha/tahun atau sekitar 0,8975 km2/tahun. Bila pengelolaan dilakukan pada pantai-pantai abrasi, maka kerusakan pantai dapat dikurangi dan pertumbuhan pantai untuk lahan produktif masih dapat ditingkatkan. Kata kunci: perubahan garis pantai, abrasi, akresi, pengembangan tataguna lahan.
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Wang, Huai Zhi, Zhi Ping Wang, Yang Lu, Ya Fei Li, and Guo Qing Tian. "Study on Friction and Wear Properties of Plasma and Laser Coatings of Aluminium Bronze Powder." Advanced Materials Research 148-149 (October 2010): 621–27. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.621.

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Cu-14Al-X alloys was made into powder and then the powder was coated onto the surface of AISI 1045 steel respectively via plasma spraying and laser cladding technologies. Microstructure and phases of the coating were investigated by EPMA, XRD, SEM et al. Friction and wear properties of the two coatings were tested by RFT- friction and wear testing machine. The results indicates that the two coatings all consists of β′, α, K and γ2 phases and the structure of laser cladding is more evenly distributed. Under the condition of boundary lubrication, abrasion mechanism of laser coating remains abrasive grain abrasion. There is also adhesion abrasion under the condition of high load. While abrasion mechanism of plasma coating is slight abrasive grain abrasion and adhesion abrasion under low load. With the load increasing, adhesion abrasion intensifies. In a word, microstructure of laser coating is more even and compact.
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ZDRAVECKÁ, E., J. TKÁČOVÁ, and M. ONDÁČ. "Effect of microstructure factors on abrasion resistance of high-strength steels." Research in Agricultural Engineering 60, No. 3 (September 12, 2014): 115–20. http://dx.doi.org/10.17221/20/2013-rae.

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Current development of high strength abrasion resistant steels is mostly oriented on high hardness, martensitic concept following the hypothesis that the abrasion resistance holds a proportional tendency with hardness. The various experimental observations have suggested that the high hardness of martenzite does not guarantee a high abrasion resistance because the brittle nature of martensite can lead to decrease their abrasive wear. The aim of this work was to analyse the influence of microstructure on abrasion resistance of selected high-strength low-alloyed steels used in the industry. The abrasive wear resistance of selected steels was obtained using an ASTM-G65 three-body abrasive wear test, microstructure and wear resistance determination. It was observed that grain refinement is an effective way of enhancing the abrasion resistance. In this context, micro alloyed steels offer an attractive combination of price and performance.
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Strzałkowski, Paweł, Urszula Kaźmierczak, and Michał Wolny. "Assessment of the method for abrasion resistance determination of sandstones on Böhme abrasion test apparatus." Bulletin of Engineering Geology and the Environment 79, no. 9 (June 9, 2020): 4947–56. http://dx.doi.org/10.1007/s10064-020-01868-x.

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Abstract The article analyses the method of testing the abrasion resistance of sandstones on Böhme abrasion test apparatus and describes the problems related to the implementation of this test, as well as the interpretation of the results. The tests were conducted in accordance with the requirements of the EN14157 standard on 14 samples of dry and water-saturated sandstones. The analysis of the results showed that the correlation coefficient for the results obtained in the case of dry samples tests in relation to water saturation was 0.944. It was also observed that the loss of volume during the abrasion process in the individual stages of the test is smaller with the increase of rotation on the disc. In the case of dry samples abrasion, the reason for this is the mixing of abrasive grain and worn stone. In the case of samples tested under conditions of water saturation, the sample is covered with the abrasive grain, which in further phases is liquefied and mixed with the worn stone mass. In this case, however, the abrasion is worse in comparison with the samples tested in the dry condition, because the liquid and mixed abrasive grain with the worn rock mass causes the sample to slide, which in turn results in the abrasion volume loss. The control of the abrasion resistance results obtained from the stone abrasion according to the EN14157 standard should be a comparison with the abrasion resistance results obtained in the process of calculating the abrasion volume loss of sample determined from height.
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Xiao, G. J., Y. Huang, R. K. Cheng, and Y. Lu. "Experimental Research on the Mathematical Model of Abrasion Ratio Based on the Abrasive Belt Grinding." Applied Mechanics and Materials 328 (June 2013): 480–85. http://dx.doi.org/10.4028/www.scientific.net/amm.328.480.

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Abrasion ratio is an important parameter to estimate the wear resistance of abrasive belt grinding, reacting the relationship between the material removal and the abrasive belt wear, and also, its value is an important basis to instruct the process of abrasive belt grinding. The mathematical model of material removal is obtained by analyzing the basic mechanism theory of centerless cylindrical grinding in this paper, and the impact curve which react the relationship between the abrasion ration and the material removal or cutting depth is obtained by using the software of Mathematica. The abrasion ratio is testified in this paper by the experiment test of abrasive belt grinding for the titanium alloy, 45# steel and 304# stainless steel, systematic analyzing the affection of abrasion ratio on the hardness ratio and the belt speed. Experimental result shows that: belt speed is superior than hardness ratio to the abrasion ratio, and the mathematical model of material removal is testified by this experimental research. So the mathematical model of material removal could be used with theoretical basis in belt grinding process.
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Suherna, Suherna, Patunru P, and Maspah Maspah. "ANALISIS KETAHANAN ABRASI MATERIAL OUTSOLE POLYURETHANE (PU) & NITRILE BUTADINE RUBBER (NBR) PADA SAFETY SHOES CHEETAH DI PT. X." SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin 13, no. 1 (June 1, 2019): 26. http://dx.doi.org/10.24853/sintek.13.1.26-31.

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Improved quality, strength and life time in terms of abrasion resistance on safety shoes outsole Cheetah material where the process use of some material has decreased in quality, besides due to usage factors, maintenance factors, and some of these materials also experience problems during use. This study is done to determine the abrasion resistance of each Outsole Polyurethane (PU) material and Nitrile Butadiene Rubber (NBR). Abrasion resistance test on the material method used the DIN Abrasion tester. Retrieval of data on outsole material was carried out on the outsole material with new conditions and that has been used in the field for a period of 1 year with a method of measuring abrasion resistance index and density of material. Calculation of average abrasion resistance for new Polyurethane (PU) type was 37 , 11 mm3 / year, while the average abrasion resistance for Polyurethane (PU) type that has been used for 1 year was 33.19 mm3 / year so that the difference is 3.92 mm3 / year or about 11% quality decrease of abrasion resistance. The average abrasion resistance with the new Nitrile Butadiene Rubber (NBR) type was 108.26 mm3 / year, the average abrasion resistance for Nitrile Butadiene Rubber (NBR) type with conditions already used in 1 year period was 107.44 mm3 / year so that the difference is 0.82 mm3 / year or about 1% decrease in quality decrease of abrasion resistance. Abrasion tolerance limits that have been set according to the SOP (Standard Operational Procedure) against abrasion resistance if SG ≥ 0.9 then the Abrasive Max is 150 and if SG ≤ 0.9 Then the Abrasive Max is 250.
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Zverev, Anton A., Aleksandr T. Bekker, Tatiana E. Uvarova, and Tamara D. Belyaeva. "THE METHOD OF MATHEMATICAL MODELING OF ICE ABRASIVE EFFECTS ON BERTHING FACILITIES." International Journal of Advanced Studies 11, no. 2 (June 30, 2021): 36–51. http://dx.doi.org/10.12731/2227-930x-2021-11-2-36-51.

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The ice cover has a significant abrasive effect on the surface of marine engineering structures. In areas with high dynamics of ice cover drift, one of the most important problems of providing load-bearing capacity of structural elements is to determine the intensity of their wear from abrasion by drifting ice. The magnitude of ice abrasion depends on many factors, the main of which are: contact pressure, abrasion path length and material resistance to ice abrasion. The length of the abrasion path and the magnitude of the contact pressure are determined by the processes of drift of ice formations and their interaction with the structure. To assess them, it is necessary to have a mathematical model for calculating the ice load. At the same time, experimental studies of various materials for resistance to ice abrasion make it possible to establish an empirical dependence of the intensity of ice abrasion. The combined use of a theoretical model of interaction and an empirical model of material destruction makes it possible to create a method for calculating the depth of ice abrasion. The article discusses the method of mathematical modeling of ice abrasive effects on berthing facilities.
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Takino, H., N. Isobe, H. Tobori, and S. Kohjiya. "Effect of Cohesion Loss Factor on Wet Skid Resistance of Tread Rubber." Tire Science and Technology 26, no. 4 (October 1, 1998): 258–76. http://dx.doi.org/10.2346/1.2135972.

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Abstract The effect of cohesion loss factor on wet skid resistance has not been studied systematically using three major factors, i.e., adhesion, hysteresis, and cohesion. Two different abrasions, PICO and BPST, as the cohesion loss factor were investigated for different polymers, carbon black grades, and carbon black/oil loadings. These two abrasion mechanisms are quite different, and BPST abrasion was concluded to be more suitable as a cohesion loss factor for the BPST (wsn) and tire wet μa. From the difference between PICO and BPST abrasions, superior material factors were analyzed from the viewpoint of the compatibility of both abrasion life and wet skid resistance of tire.
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Dissertations / Theses on the topic "Abrasion"

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Popa, Mihaela. "Tooth cleaning : abrasive particles but no abrasion." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEI034.

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En 1997 Stuard L. Fischman a dit « Certainement on mange bien, on parle bien, on a l'air bien et on « sent frais » - mais on a aussi la plaque dentaire, la gingivite et les caries dentaires. Le lecteur peut déterminer les progrès réalisés en réfléchissant à son état de santé bucco-dentaire personnel! ». Vingt ans plus tard cette affirmation reste valide. L'acte le plus commun d'hygiène buccale est de se nettoyer les dents par brosse à dents, eau et dentifrice. Le rôle principal de la brosse à dents et du dentifrice est d'éliminer le biofilm dentaire responsable des maladies buccales. Il est largement admis que le biofilm dentaire est éliminé au moyen de particules de nettoyage trouvés dans la composition du dentifrice. Puisque le mécanisme des particules nettoyantes est couramment supposé abrasif, la recherche sur le nettoyage des dents a été principalement conduite du point de vue « abrasif », elles sont ainsi appelées « particules abrasives ». Néanmoins, le nettoyage des dents est un processus complexe impliquant plusieurs mécanismes (biochimiques, physico-chimiques et mécaniques), chacun activé par des facteurs à la fois internes (comme l'environnement oral individuel et les habitudes individuelles d'hygiène buccale) et externes La conception de la brosse à dents et la composition de dentifrice). Ce travail a commencé à partir de l'idée que le nettoyage des dents ne peut pas être réduit à un processus d'abrasion; par conséquence, afin d'acquérir une connaissance plus profonde du comportement réel des particules nettoyantes, il est nécessaire de comprendre la contribution de chaque mécanisme d'action impliqué. Un système biomimétique a été développé pour reproduire la brosse à dents, l'émail dentaire, la pellicule exogène acquise et le dentifrice (une suspension simplifiée à base de silice). Le système a été analysé d'un point de vue tribologique, en adoptant la théorie du « troisième corps » et en utilisant différentes techniques expérimentales (spectroscopie infrarouge, microscopie à force atomique, la microscopie électronique à balayage). On a déterminé la contribution de la mécanique et de la physico-chimie de la surface de l'émail dentaire, de la chimie du dentifrice et de la mécanique de la brosse à dents. Les résultats ont montré que la pellicule exogène acquise biomimétique n'a pas été rayée pendant le nettoyage des dents, mais plutôt lissée ou enlevée, ce qui suggère que l'abrasion n'est pas le mécanisme «gouvernant» du processus de brossage des dents. En effet, un mécanisme de «lubrification fractionnée» est supposé intervenir, favorisant la formation des agglomérats de silice supportent la charge normale dans des zones de contact localisées. L'efficacité du processus de nettoyage des dents est censée être contrôlée par la taille des agglomérats de silice, qui dépend à son tour de la mécanique et la physico-chimie de la surface de l’émail dentaire, de la chimie du dentifrice et de la mécanique de la brosse à dents
In 1997, Stuart L. Fischman wrote “We certainly eat well, speak well, look fine and ‘smell fresh’—but we also have plaque, gingivitis and dental caries. The reader can determine how much progress has been made by reflecting on his or her personal oral health status!” Two decades later, this affirmation is still valid. The most common act of oral hygiene is to clean one’s teeth via toothbrush, water, and dentifrice. The main role of toothbrush and dentifrice is to remove the dental biofilm responsible for oral diseases. Over the years, several studies have focused on improving toothbrushing techniques, toothbrush design, and dentifrice composition, often leading to conflicting results. It is largely accepted that dental biofilm is removed by means of cleansing particles, which can be found in many dentifrice compositions. Since the mechanism of the cleansing particles is commonly believed to be abrasive, research on teeth cleaning has been mainly conducted from an ‘abrasive’ point of view, so much so that cleansing particles are frequently referred to as ‘abrasive particles’. Nonetheless, teeth cleaning is a complex process involving several mechanisms (bio-chemical, physico-chemical, and mechanical), each one activated by factors that are both internal (such as individual oral environment and individual oral hygiene habits) and external (such as toothbrush design and dentifrice composition). This work started from the idea that teeth cleaning cannot be reduced to an abrasion process; consequently, in order to gain deeper knowledge about the actual behavior of the cleansing particles, it is necessary to understand the contribution of each mechanism involved. A biomimetic system was developed to reproduce toothbrush, dental enamel, acquired enamel pellicle, and dentifrice (modeled as a silica-based slurry). The system was analyzed from a tribological point of view, adopting the ‘third-body approach’ and employing different experimental techniques such as infrared spectroscopy, atomic force microscopy, and environmental scanning electron microscopy. The contribution of the dental enamel surface mechanics and physico-chemistry, of the dentifrice chemistry, and of toothbrush mechanics was assessed. Results showed that the biomimetic acquired enamel pellicle was not scratched during teeth cleaning, but rather smoothened or removed, suggesting that abrasion is not the governing mechanism of the toothbrushing process. Indeed, a ‘fractionated lubrication’ mechanism is believed to take part, promoting the formation of silica agglomerates that bear normal load at localized contact areas. The effectiveness of the teeth cleaning process is believed to be controlled by the size of the silica agglomerates, which in turn depends on dental enamel surface mechanics and physico-chemistry, dentifrice chemistry, and toothbrush mechanics
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Kelly, Damian Anthony. "Abrasion in oral care." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619939.

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Sadegzadeh, Massud. "Abrasion resistance of concrete." Thesis, Aston University, 1985. http://publications.aston.ac.uk/14253/.

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This thesis describes an experimental study of the abrasion resistance of concrete at both the macro and micro levels. This is preceded by a review related to friction and wear, methods of test for assessing abrasion resistance, and factors influencing the abrasion resistance of concrete. A versatile test apparatus was developed to assess the abrasion resistance of concrete. This could be operated in three modes and a standardised procedure was established for all tests. A laboratory programme was undertaken to investigate the influence, on abrasion resistance, of three major factors - finishing techniques, curing regimes and surface treatments. The results clearly show that abrasion resistance was significantly affected by these factors, and tentative mechanisms were postulated to explain these observations. To substantiate these mechanisms, the concrete specimens from the macro-study were subjected to micro-structural investigation, using such techniques as 'Mercury Intrusion Forosimetry, Microhardness, Scanning Electron Microscopy, Petrography and Differential Thermal Analysis. The results of this programme clearly demonstrated that the abrasion resistance of concrete is primarily dependent on the microstructure of the concrete nearest to the surface. The viability of indirectly assessing the abrasion resistance was investigated using three non-destructive techniques - Ultrasonic Pulse Velocity, Schmidt Rebound Hardness, and the Initial Surface Absorption Test. The Initial Surface Absorption was found to be most sensitive to factors which were shown to have influenced the abrasion resistance of concrete. An extensive field investigation was also undertaken. The results were used to compare site and laboratorypractices, and the performance in the accelerated abrasion test with the service wear. From this study, criteria were developed for assessing the quality of concrete floor slabs in terms of abrasion resistance.
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Ribeiro, Vilmondes. "Abrasividade pendular e a resistência mecânica das rochas." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/3/3134/tde-20082010-164048/.

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A interação entre rocha e metal, na forma de operações como perfuração, escavação e cominuição, dá origem a dois efeitos: um desejado, desagregação da rocha e outro indesejado, desgaste do metal. Como o desgaste, dramaticamente, influencia o desempenho dos equipamentos, é fundamental para estabelecer uma base para equações de predição de taxas de desgaste potencial. Neste contexto, Golovanevskiy e Bearman (2008), propuseram mais um método para avaliação da abrasividade. Este método, ensaio de abrasão por impacto deslizante (Gouging Abrasion Test), é realizado em condições de alta tensão/alto impacto de desgaste e é caracterizado pela maior taxa de remoção de material de todos os modos de desgaste e, portanto, representa o modo mais severo de desgaste abrasivo.O método consiste, basicamente, de uma ponteira cilíndrica com uma ponta cônica de 90º. Esta ponteira, em trajetória pendular, atinge uma amostra de rocha com energia de impacto de aproximadamente 300 joules e velocidade da ordem de 5,2 m/s. Semelhante à metodologia de cálculo de abrasividade Cerchar (CAI), o Gouging Abrasion Index (Gi) é calculado como sendo a média do diâmetro da ponta cônica, após desgaste, em milímetros e multiplicado por 10. Este trabalho verificou a adequabilidade do Gouging Abrasion Test, para um pequeno número de amostras de rocha que representam, qualitativamente, os principais tipos de rocha encontrados no Brasil e a sua correlação com outros ensaios consagrados como resistência à compressão, desgaste Amsler e dureza Knoop. Está análise mostrou alta correlação entre Gi e dureza knoop (R² = 0,94), baixa correlação com desgaste Amsler (R² = 0,41) e nenhuma correlação com resistência à compressão uniaxial.
The rock-metal interaction, like occurs in operations as drilling, excavation and crushing, generates two effects: the desired rock degradation and the undesirable metal wear. As the wear dramatically influences the process performance of the equipment, it is critical to establish a basis for predictive equations to estimate potential wear rates. Following this context, in 2008 Golovanevskiy and Bearman proposed a method for abrasiveness evaluation. The method, Gouging Abrasion Test, employs high-stress load gouging/sliding impact wear and is characterized by the highest material removing rate than all wear modes, therefore representing the most severe type of abrasive wear. The method consists, in a few words, of a steel wear tool with a 90o sharp conical tip. This tip attacks a rock sample in a swinging trajectory with a impact energy of more than 300 joules and a speed around 5,2 m/s. Like the Cerchar Abrasivity Index (CAI) calculation, the Gouging Abrasion Index (Gi) is determined as 10 times de average diameter in millimeters of de conical tip (now flat) after one event of wear. This work intends to improve the knowledge about Gouging Abrasion Test, and evaluates its suitability in a small group of rocks that represents some of the main types to be found in Brazil\'s rock cutting, drilling and crushing works. Its relation to other frequent tests like uniaxial compressive strength, Amsler abrasive wear and Knoop hardness were also verified. The results show high correlation between Gi and Knoop hardness (R2 = 0,94), low correlation with Amsler wear (R2 = 0,41) and no relation to uniaxial compressive strength.
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Wu, Guangchang. "The mechanisms of rubber abrasion." Thesis, Queen Mary, University of London, 2017. http://qmro.qmul.ac.uk/xmlui/handle/123456789/25986.

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Rubber abrasion is one of the most important properties for rubber products, such as tyres. However, due to its complexity rubber abrasion is still a very challenging topic in rubber research. Rubber abrasion is not governed by a single mechanism. Different mechanisms can dominate the abrasion behaviour depending on the rubber compound, base polymer type, loading severity, contact conditions, testing temperature and chemical environment. This study investigates the different mechanisms for rubber abrasion and the transition between these mechanisms using two types of abrasion apparatus, a blade abrader and a surface abrader, respectively. Blade abrasion was used to generate the abrasion pattern. Once the abrasion pattern was formed on the rubber surface under unidirectional sliding, the underlying mechanism was primarily one of fatigue crack growth, which is referred as "fatigue wear" in the literature. An independent pure shear fatigue test with various loading profiles was conducted to predict the crack growth rate using a fracture mechanics approach during these abrasion tests. The tearing energy during blade abrasion was calculated using a fracture mechanics approach. A Finite Element Analysis (FEA) technique using the Virtual Crack Closure Technique (VCCT) was adopted. The VCCT approach was a simpler, faster and more reliable approach to derive the tearing energy under these complicated large strain contact conditions. The prediction of the abrasion rate using this independent measurement of the crack growth resistance of materials worked best for unfilled SBR material. A bespoke surface contact abrasion machine was used to investigate rubber abrasion on silicon carbide sandpaper under both dry and wet conditions. Depending on the materials, contact conditions and sliding velocity, two different mechanisms were observed. The first being a mechanochemical degradation, during which a sticky layer was generated on the rubber surface. This behaviour is also called "smearing wear". The second failure mode resulted from a purely mechanical fracture named "abrasive wear". It seemed that the carbon black filled rubber was more susceptible to smearing wear than the silica filled one. Higher sliding velocities promoted smearing wear, possibly due to higher temperatures being generated at the interface. Alternatively, water lubrication was seen to promote abrasive wear. Therefore, the abrasion mechanism changed to more rapid abrasive wear under wet conditions, which resulted in a significant increase in the rate of weight loss. Finally, the sticky debris generated during the smearing wear was characterised using various different techniques. This revealed that the sticky debris had more oxygen and lower carbon and sulphur content. It contained a greater amount volatiles and generated more char formation during its degradation in the air. The molecular weight of the sticky debris was much lower when compared to the original uncured rubber. It seemed that in the sticky debris the filler network can slowly recover and the degraded polymer chains can re-absorb back onto filler surface forming "bound rubber", which leads to faster rates of weight loss.
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Cozza, Ronaldo Câmara. "Estudo do comportamento do coeficiente de desgaste e dos modos de desgaste abrasivo em ensaios de desgaste micro-abrasivo." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/3/3151/tde-31032008-101929/.

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Esta Dissertação tem por objetivo estudar o comportamento de diferentes materiais sob a ação de desgaste micro-abrasivo. Como parte do trabalho, foi projetada e construída uma máquina de ensaio desgaste por micro-abrasão por esfera rotativa fixa, com configuração mecânica com diferenças em relação às observadas na literatura (Gee et al., 2005). Como corpos-de-prova, foram utilizadas pastilhas intercambiáveis de metal duro (classe P20) e aço ferramenta M2. As esferas foram de aço AISI 1010 cementado e aço AISI 52100 temperado e revenido. Durante os ensaios, foi inserida entre a esfera e o corpo-de-prova uma pasta abrasiva preparada com carbeto de silício preto, com tamanho médio de partícula de 5 µm. Inicialmente, foram realizados ensaios preliminares, com a finalidade de analisar não só o comportamento do equipamento, mas também estudar a transição entre os modos de desgaste que podem ocorrer durante o desgaste micro-abrasivo. A transição entre os modos de desgaste foi estudada em função da carga normal e dos materiais utilizados durante o ensaio. Os resultados obtidos indicaram boa reprodutibilidade do equipamento e coerência com resultados da literatura. Em seguida, em ensaios denominados definitivos, foram pesquisadas as atuações dos modos de desgaste abrasivo e a obtenção do regime permanente de desgaste. Os resultados mostraram que, com a variação da distância de deslizamento, houve alterações nas ocorrências dos modos de desgaste abrasivo. Por outro lado, em alguns ensaios, o coeficiente de desgaste tendeu a permanecer constante, o que caracteriza a obtenção do regime permanente de desgaste. Entretanto, em outros, o coeficiente de desgaste teve uma evolução aleatória com a distância de deslizamento, fornecendo indicativos de que o desgaste não entrou em regime.
This work presents a study on the behavior of different materials under the action of micro-abrasive wear. A micro-abrasive wear testing machine with fixed sphere was designed and constructed, presenting a mechanical configuration with differences with respect to those found in the literature (Gee et al., 2005). M2 tool steel and WC-Co P20 were used as testing specimen materials. Ball materials were cemented AISI 1010 steel and quenched and tempered AISI 52100 steel. During the tests, an abrasive slurry, prepared with black silicon carbide (SiC) particles (average particle size of 5 µm), was supplied to the contact between the specimen and the ball. Initially, preliminary tests were conducted to study the wear mode transitions that can occur during the micro-abrasive wear and to analyze the operational conditions of the equipment. The wear mode transitions were evaluated as a function of the applied normal load and of the materials used. The results indicated good reproducibility and qualitative agreement with those found in the litarature. Later, a new set of tests was conducted, which analyzed the evolution of the abrasive wear modes and the achievement of steady state wear as a function of sliding distance. The results indicated a continuous variation in the abrasive wear modes with sliding distance. Additionally, in some tests, the wear coefficient tended to stabilize in constant value, which characterizes the achievement of steady state regime. However, in other tests, the wear coefficient presented a non constant evolution of wear coefficient with the sliding distance, which denotes that the constant regime of wear was not obtained.
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Doan, Yen The. "Experimental investigation and wear simulation of three-body abrasion." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2015. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-158239.

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The wear process in three-body contact causes problems of abrasion such as volume loss and changes of geometry of the triboelements. The wear problem leads to increased failure and high costs for repairing or replacing equipment. To understand the nature of the wear behaviour and to predict the wear rate in advance, experimental investigation and numerical simulation of the wear process are required. In this work, the wear process is analysed and the influencing parameters governing the wear behaviour are investigated experimentally to develop a new wear model. Main influential factors are considered such as kinematics of abrasive particles, contact stiffness of the particle layer, friction characteristics, and wear factors. The experiments to study kinematics of particle layers are performed on a new observation tester. To define the contact stiffness of abrasive particles, experiments are conducted by the uniaxial spindle compression tester. Moreover, a tribometer test rig with applied load up to 200 N and velocity up to 1000 mm/s is used to investigate the friction characteristics and the wear behaviour of three-body tribosystem. Analyses of influential factors on the wear behaviour in dependency of predefined process parameter are carried out. Additionally, based on the results of the experimental investigations, approximation equations representing the relation of the influential factors and the process parameters are determined. A three-body wear model is build up to represent the wear behaviour by physical wear laws. Furthermore, these approximation equations and the relevant parameters obtained by experimental investigations are included in the Fleischer’s wear equation to simulate the wear process. With the coupled model the wear process of the sample can be simulated twodimensional over the sliding distance. It is possible to predict the wear depth and the wear intensity, which can be used to estimate the wear rate. Additionally, from the results of the wear simulation the worn surface and the local contact pressure in the contact region are determined which provide a deeper insight into the wear process. With this simulation the understanding of the wear behaviour can be improved which is important to solve wear problems.
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Evans, Paul Done. "The hardness and abrasion of polymers." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/38305.

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Liang, Hancheng. "Investigating the mechanism of elastomer abrasion." Thesis, Queen Mary, University of London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.582606.

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This study aims to understand the mechanism of elastomer abrasion using Finite Element Analysis (FEA) techniques. A blade abrasion device is used to create the abrasion patterns. The initiation of the abrasion patterns is investigated by observing how the cracks develop on the moulded flat elastomer surface. At first, cracks initiate at the location of the maximum tensile stress, yielding a crack growth angle of between 30o~50° with the elastomer surface. The angle being greater as the normal load applied on the blade is increased. The crack growth angle reduces as the crack increases in length. It passes through several steps, each with a reduced crack growth angle and eventually reaches a much smaller angle generally observed at the steady state of abrasion. This initial crack growth process is predicted well by the FEA simulation. Both the experimental and the computed results suggest that the initial cracks in elastomer abrasion originate from micro-vibrations generated during the slip phase of stick-slip motion. This stick-slip motion is regularly encountered during the frictional contact between a soft elastomer and hard abrader. The propagation of the abrasion patterns after reaching steady state is also investigated using a blade abrasion device. The second part of this investigation examines the effect of the normal and frictional forces on the rate and direction of crack growth during the abrasion process. Comparison is drawn between the rates of material loss as measured experimentally under a range of test conditions and the predictions calculated using a fracture mechanics based FEA. For the first time here it is shown that an explicit dynamic FEA model can be used to reliably predict the stored energy release rate in a complicated large strain contact model. A series of different finite element models were developed to investigate the tearing processes at a specific asperity under each revolution or pass of the abrasion blade. These models predict for SBR materials the rate of the resulting tearing processes well.
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Cozza, Ronaldo Câmara. "Estudo do desgaste e atrito em ensaios micro-abrasivos por esfera rotativa fixa em condições de força normal constante e pressão constante." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3151/tde-26082011-143752/.

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O ensaio de desgaste micro-abrasivo por esfera rotativa vem conquistando elevada aceitação em universidades e centros de pesquisa, sendo amplamente adotado em estudos envolvendo desgaste abrasivo de materiais. Dois modos de desgaste abrasivo podem ser observados neste tipo de ensaio: rolamento resulta quando as partículas abrasivas rolam sobre a superfície do corpo-de-prova, enquanto riscamento é observado quando as partículas abrasivas deslizam sobre o mesmo; o tipo do modo de desgaste abrasivo apresenta uma significante influência sobre o comportamento de um sistema tribológico. Diversos trabalhos envolvendo coeficiente de atrito durante ensaios de desgaste abrasivo estão disponíveis na literatura, mas somente uma pequena parcela dedicaram-se ao estudo do coeficiente de atrito desenvolvido em ensaios de desgaste micro-abrasivo conduzidos por esfera rotativa. Adicionalmente, pesquisas preliminares reportaram que os resultados são dependentes da variação de pressão, ocasionada pela condução de ensaios sob condições de força normal constante. Logo, o propósito desta Tese de Doutorado é pesquisar a relação entre coeficiente de atrito e modos de desgaste abrasivo em ensaios desgaste micro-abrasivo por esfera rotativa, em condições de força normal constante e pressão constante. Ensaios ball-cratering foram conduzidos com esferas de aço AISI 52100 e um corpo-de-prova de aço-ferramenta AISI H10. A pasta abrasiva foi preparada com partículas de carbeto de silício (SiC) preto (tamanho médio de partícula de 3 m) e água destilada. Diferentes valores de força normal constante e pressão constante foram definidos para os experimentos. As forças normal (N) e tangencial (T) foram monitoradas continuamente durante os ensaios e a relação entre T/N foi calculada para fornecer uma indicação do coeficiente de atrito atuante no sistema tribológico esfera / partículas abrasivas / corpo-de-prova. Em todos os casos, análises por Microscopia Óptica das crateras de desgaste revelaram somente a presença de desgaste abrasivo por riscamento. Entretanto, observações mais detalhadas, conduzidas por Microscopia Eletrônica de Varredura, indicaram que diferentes níveis desgaste abrasivo por rolamento atuaram ao longo dos riscos, fenômeno nomeado de micro-rolling abrasion (microrolamento). Além disso, os resultados obtidos mostraram, também, que: i) a distância de deslizamento apresenta significante influência sobre a transição entre os modos de desgaste abrasivo, ii) para os valores de força normal constante e pressão constante adotados, o coeficiente de atrito manteve-se, aproximadamente, na mesma faixa de valores e iii) o coeficiente de atrito é independente da taxa de desgaste.
The micro-scale abrasive wear test by rotative ball has gained large acceptance in universities and research centers, being widely used in studies on the abrasive wear of materials. Two wear modes are usually observed in this type of test: rolling abrasion results when the abrasive particles roll on the surface of the tested specimen, while grooving abrasion is observed when the abrasive particles slide; the type of wear mode has a significant effect on the overall behaviour of a tribological system. Several works on the friction coefficient during abrasive wear tests are available in the literature, but only a few were dedicated to the friction coefficient in micro-abrasive wear tests conducted with rotating ball. Additionally, recent works have identified that results may also be affected by the change in contact pressure that occurs when tests are conducted with constant applied force. Thus, the purpose of this work is to study the relationship between friction coefficient and abrasive wear modes in ball-cratering wear tests conducted at constant normal force and constant pressure. Micro-scale abrasive wear tests were conducted with a ball of AISI 52100 steel and a specimen of AISI H10 tool steel. The abrasive slurry was prepared with black silicon carbide (SiC) particles (average particle size of 3 m) and distilled water. Two constant normal force values and two constant pressure values were selected for the tests. The tangential and normal loads were monitored throughout the tests and their ratio was calculated to provide an indication of the friction coefficient. In all cases, optical microscopy analysis of the worn craters revelated only the presence of grooving abrasion. However, a more detailed analysis conducted by SEM has indicated that different degrees of rolling abrasion have also occurred along the grooves. The results have also shown that: i) the sliding distance presents an important role on the wear mode transition, ii) for the selected values of constant normal force and constant pressure, the friction coefficient presented, approximately, the same range of values and ii) the friction coefficient was independent of the wear rate.
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Books on the topic "Abrasion"

1

Hatherly, Lyn. Acts of Abrasion. Melbourne, Victoria, Australia: Five Islands Press, 2006.

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Sadegzadeh, Massud. Abrasion resistance of concrete. Birmingham: University of Aston. Department of Civil Engineering and Construction, 1985.

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Natoli, Steve. Air abrasion in dentistry. Chicago, IL: American Dental Assistants Association, 1998.

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Laird, George. Abrasion-resistant cast iron handbook. Des Plaines, Ill: American Foundry Society, 2000.

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Spenceley, Sandy. Impact and abrasion resistance of Shotcrete. Sudbury, Ont: Laurentian University, School of Engineering, 1997.

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Wahome, E. W. The significance of dental attrition in the reconstruction of prehistoric diets: A general review. [Nairobi]: University of Nairobi, Dept. of History, 1989.

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Miyoshi, Kazuhisa. Effect of abrasive grit size on wear of manganese-zinc ferrite under three-body abrasion. [Washington, DC: National Aeronautics and Space Administration, 1987.

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National Association of Corrosion Engineers. Sheet rubber linings for abrasion and corrosion service. Houston: NACE, 1998.

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Redmalm, Go ran. Dentifrice abrasivity. Stockholm: Kongl Carolinska Medico Chirurgiska Institutet, 1987.

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Elwell, David William John. Toughness and abrasion resistance of high alloy cast iron. Birmingham: Aston University. Departmentof Mechanical and Production Engineering, 1986.

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Book chapters on the topic "Abrasion"

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Bährle-Rapp, Marina. "Abrasion." In Springer Lexikon Kosmetik und Körperpflege, 2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_19.

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Marker, Brian R. "Abrasion." In Encyclopedia of Earth Sciences Series, 1–4. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-12127-7_3-1.

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Gooch, Jan W. "Abrasion." In Encyclopedic Dictionary of Polymers, 3. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_33.

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Slowik, Volker, Steffen Müller, Christian Wagner, and Viktor Mechtcherine. "Abrasion." In RILEM State-of-the-Art Reports, 119–24. Dordrecht: Springer Netherlands, 2017. http://dx.doi.org/10.1007/978-94-024-1013-6_7.

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Marker, Brian R. "Abrasion." In Encyclopedia of Earth Sciences Series, 1–4. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73568-9_3.

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Morandi, Uliano, Alessandro Stefani, and Christian Casali. "Pleural Abrasion." In Minimally Invasive Thoracic and Cardiac Surgery, 205–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-11861-6_18.

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Gooch, Jan W. "Color Abrasion." In Encyclopedic Dictionary of Polymers, 155. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2615.

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Gooch, Jan W. "Abrasion Coefficient." In Encyclopedic Dictionary of Polymers, 3. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_34.

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Gooch, Jan W. "Abrasion Cycle." In Encyclopedic Dictionary of Polymers, 3. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_35.

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Gooch, Jan W. "Abrasion Resistance." In Encyclopedic Dictionary of Polymers, 3–4. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_36.

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Conference papers on the topic "Abrasion"

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Mally, Timothy S., Roger H. Walker, and Jesse J. French. "Empirical Estimation of the Abrasion Endurance Life of Epoxy Coatings for Applications on Transmission Pipelines." In ASME 2012 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/pvp2012-78648.

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Internal and external pipeline erosion due to suspended particulate matter, wax and sand content, and geoseismic motion can rapidly reduce pipeline wall thicknesses to critically low values. Due to low shrinkage rates on curing, epoxy polymer coatings are well suited for slowing the rate at which pipe wall thickness is lost. The abrasion resistance of an epoxy coating is a function of the hardness of the coating, the abrasive particle velocity, angle of impact, and particle size. This paper describes the authors’ attempts to estimate longevity of certain Bisphenol-A based epoxy coatings against particulate abrasion. Details are presented for the abrasion resistance testing of four different commercial epoxy coatings. Experimental methodology is detailed consisting of two different methods of accelerated erosion testing: water-jet droplet erosion and fixed frequency mechanical abrasion. The methods are used to calculate abrasion endurance lifetime for a variety of pipeline installation environments. Test samples are exposed to abrasive wear for a given period of time and material loss is measured. Loaded and unloaded abrasion testing is used to represent forces proportional to buried and non-buried piping. Erosion volume and time to the specified erosion depth are compared with control data on uncoated carbon steel substrates. This accelerated erosion data is transposed to reflect in-situ life expectancies.
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Knuuttila, J., S. Ahmaniemi, E. Leivo, P. Sorsa, P. Vuoristo, and T. Mantyla. "Wet Abrasion and Slurry Erosion Resistance of Sealed Oxide Coatings." In ITSC 1998, edited by Christian Coddet. ASM International, 1998. http://dx.doi.org/10.31399/asm.cp.itsc1998p0145.

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Abstract Several recently published studies have shown remarkable improvements in dry abrasion resistance and corrosion resistance of aluminum phosphate sealed oxide coatings when compared to unsealed ones. There are numerous applications in chemical industry where a corrosive environment is accompanied with abrasive or erosive particles. In this study the wet abrasion resistance and slurry erosion resistance of aluminum phosphate-sealed and unsealed oxide coatings were studied and compared to their dry abrasion resistance. In wet abrasion tests kaolin and water mixture was used as the abrasive. In slurry erosion tests several abrasives in water with various pH values was used as the erosive medium. The coatings were characterized for microstructure and their wear mechanisms were analyzed using SEM. The results from wear tests are reported and correlated with coating properties. The influence of coating quality to the relative improvement achieved by sealing is presented and discussed.
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Badisch, E., P. Geiderer, R. Polak, and F. Franek. "Design of Abrasion Resistant Surfaces by Textures on Macroscopic Size." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63884.

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Although abrasive wear is a predominant type of wear in almost all fields of industry, it is particularly relevant to the field of mining and mineral processing. This wear mechanism is mainly influenced by the abrasive particle (e.g. hardness, size, shape, mass), the wear kinematics (impact angle, impact velocity), and also by the worn material itself (e.g. surface, structure, hardness). Today, a lot of work is done to develop systems which are resistant against wear caused by mineral abrasives. One goal for higher abrasion resistance is the use of macroscopic surface textures which hinder the abrasive particles from hitting unprotected surface areas (especially for dry, coarse abrasives) or force the formation of surface adherent mineral embedment which leads to a self-protection effect (especially for fine, wet type of abrasives). However, there is a serious lack of systematic and scientific knowledge for the design of abrasion resistant surfaces. The aim of this study was to evaluate the efficiency of macroscopic surface textures on their ability of minimizing abrasive attack, finally with the purpose to establish design rules for abrasion resistant surfaces. Profile geometry, profile distribution and surface arrangements were investigated on the wear protecting properties. It could be observed that the surface protection factor against abrasion can be adjusted by distribution and surface coverage. A strong influence of the grain size of the abrasives used on the wear behavior was observed.
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"ABRASION OF MAGNETORHEOLOGICAL FLUIDS." In Engineering Mechanics 2019. Institute of Thermomechanics of the Czech Academy of Sciences, Prague, 2019. http://dx.doi.org/10.21495/71-0-169.

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Tyutrin, Roman S., Egor E. Pomnikov, and Andrey K. Baenkhaev. "Concrete-Ice Abrasion Mechanism." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-42381.

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There are not many data related to the mechanism of concrete-ice abrasion published. Some of researches try to find similarities in concrete-ice abrasion mechanism with various wear mechanisms from tribology, others propose their own theory. In general, ice abrasion of concrete has some similarities, noticed by researches, with wear mechanisms of other materials for example same splitting on several stages (surface, transition, stable), or relation between friction and abrasion rate. Most of the equations use hardness or fracture toughness as the characteristic of the material. These parameters were tested both for ice and concrete in general. But may these results be applicable for micro scale modelling? This article gives an overview of several possible mechanisms and describes their main points. As well as author’s hypothesis of the mechanism is proposed.
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De Mello, J. D. B., C. Binder, V. B. Deme´trio, and A. N. Klein. "Effect of the Nature of Nitride Phases on the Micro Abrasion of Plasma Nitrided Sintered Iron." In ASME/STLE 2007 International Joint Tribology Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ijtc2007-44255.

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In the present investigation, the effect of plasma nitriding on the micro abrasion behavior of sintered unalloyed iron is investigated. Plasma nitriding was carried out using two different sets of operative parameters in order to produce microstructures composed of different dominant iron nitrides, e.g. Fe4N (γ) and Fe2–3N (ε), phases. Micro abrasive wear tests were carried out in a “free ball” micro abrasion tester using SiC slurries. The tribological parameters were kept constant during the tests. The ε phase microstructures presented a superior abrasion resistance.
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Zhang, Tao, CiChang Chen, Dan Li, and DongLi Lv. "Experimental Study of Mechanism of Silt Abrasion Influenced by Cavitation in Hydraulic Machinery." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-06040.

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Experiments of cavitation erosion, silt abrasion and their synergetic erosion on Al hydrofoils were made in a testing-section. The erosion depth on hydrofoils was measured, and results showed that the depth value increased gradually with the condition changed from silt abrasion to synergetic erosion (lie due to contemporary action of silt abrasion and cavitation bubble collapse) and meanwhile with the position changed form the front part to the trailing edge of hydrofoil. The microtopography on hydrofoils was observed under the three experimental conditions. The cavitation erosion results appeared as regular-shape pits which differed only in the number per unit area at different position. The silt abrasion patterns was uniform in characteristics around one fixed point on hydrofoil. From the front part to the trailing edge of hydrofoil, the main abrasive wear patterns changed from ploughing type to wedge type. Small scale ploughing or cutting type and large scale wedge type were the main erosion patterns of the synergetic erosion directly caused by solid particles. From the front part to the trailing edge of hydrofoil, the size of small and large scale abrasive wear patterns increased gradually. Combining the analysis and processing of cavitation structure with the silt abrasion and synergetic erosion patterns, a viewpoint about silt abrasion influenced by cavitation was put forward. During the stage of growth of attached cavity, the hydrofoil was eroded by solid particles at small angle as a result of solid particles subjected to cavitation nucleation being accelerated along the surface of hydrofoil, and the erosion patterns were dominated by ploughing or cutting type. During the stage of cavitation cloud collapse in main flow, the hydrofoil was eroded by impact abrasion of solid particles at large angle resulted from solid particles being accelerated to high velocity by micro-jet or pressure wave, and the dominating erosion pattern was wedge type.
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YAMAGUCHI, K., and N. TAKAKURA. "EFFECT OF ABRASIVE GRAIN SIZE ON SURFACE FINISH AND ABRASION IN ABRASIVE - FLOW FINISHING OF ALUMINIUM." In Proceedings of the International Symposium. WORLD SCIENTIFIC, 1997. http://dx.doi.org/10.1142/9789814317405_0036.

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Ferguson, D., D. Wilt, J. Kolecki, and M. Siebert. "Abrasion on Mars - Pathfinder results." In 37th Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1999. http://dx.doi.org/10.2514/6.1999-376.

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Staricna, Nikola, Peter Koscak, and Milan Dzunda. "Abrasion of tires in aviation." In 2021 New Trends in Aviation Development (NTAD). IEEE, 2021. http://dx.doi.org/10.1109/ntad54074.2021.9746514.

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Reports on the topic "Abrasion"

1

Lever, James, Susan Taylor, Garrett Hoch, and Charles Daghlian. Evidence that abrasion can govern snow kinetic friction. Engineer Research and Development Center (U.S.), December 2021. http://dx.doi.org/10.21079/11681/42646.

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The long-accepted theory to explain why snow is slippery postulates self-lubrication: frictional heat from sliding melts and thereby lubricates the contacting snow grains. We recently published micro-scale interface observations that contradicted this explanation: contacting snow grains abraded and did not melt under a polyethylene slider, despite low friction values. Here we provide additional observational and theoretical evidence that abrasion can govern snow kinetic friction. We obtained coordinated infrared, visible-light and scanning-electron micrographs that confirm that the evolving shapes observed during our tribometer tests are contacting snow grains polished by abrasion, and that the wear particles can sinter together and fill the adjacent pore spaces. Furthermore, dry-contact abrasive wear reasonably predicts the evolution of snow-slider contact area and sliding-heat-source theory confirms that contact temperatures would not reach 0°C during our tribometer tests. Importantly, published measurements of interface temperatures also indicate that melting did not occur during field tests on sleds and skis. Although prevailing theory anticipates a transition from dry to lubricated contact along a slider, we suggest that dry-contact abrasion and heat flow can prevent this transition from occurring for snow-friction scenarios of practical interest.
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Ludtka, G. M. ADVANCED ABRASION RESISTANT MATERIALS FOR MINING. Office of Scientific and Technical Information (OSTI), April 2004. http://dx.doi.org/10.2172/885603.

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Mackiewicz-Ludtka, G. Advance Abrasion Resistant Materials for Mining. Office of Scientific and Technical Information (OSTI), June 2004. http://dx.doi.org/10.2172/940296.

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Scott, Keana C. K. Correlating Mechanical Abrasion with Power Input. Gaithersburg, MD: National Institute of Standards and Technology, 2022. http://dx.doi.org/10.6028/nist.sp.1200-30.

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Scott, Keana C. K. Correlating Mechanical Abrasion with Power Input. Gaithersburg, MD: National Institute of Standards and Technology, 2022. http://dx.doi.org/10.6028/nist.sp.1278.

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Worthington, Monty, Muhammad Ali, and Tom Ravens. Abrasion Testing of Critical Components of Hydrokinetic Devices. Office of Scientific and Technical Information (OSTI), December 2013. http://dx.doi.org/10.2172/1110808.

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Miller, David C., Matt T. Muller, and Lin J. Simpson. Review of Artificial Abrasion Test Methods for PV Module Technology. Office of Scientific and Technical Information (OSTI), August 2016. http://dx.doi.org/10.2172/1295389.

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Fenske, George, and Oyelayo Ajayi. An Abrasion Wear Model of Rotary Shear Comminution of Biomass Feedstock. Office of Scientific and Technical Information (OSTI), August 2021. http://dx.doi.org/10.2172/1819740.

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Cummings, D. I., B. A. Kjarsgaard, H. A. J. Russell, and D. R. Sharpe. Abrasion of kimberlite pebbles in a tumbling mill: implications for diamond exploration. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2011. http://dx.doi.org/10.4095/288022.

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JENSEN, C. E. Transducer Abrasion test results in support of ultrasonic inspection of Double Shell Tanks (DST). Office of Scientific and Technical Information (OSTI), February 2003. http://dx.doi.org/10.2172/810652.

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