An investigation of particle dynamics within a centrifugal accelerator type erosion tester

Deng, Tong; Bradley, M.S.A.; Bingley, M.S.

doi:10.1016/s0043-1648(00)00514-7

Cited by 17 publications

(10 citation statements)

References 5 publications

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“…The air drag force has the smallest contribution on the particle velocity vector. The calculation result is supported by experimental results that show little effect of particle size on either particle velocity or exit angle [28].…”

Section: Particle Dynamicssupporting

confidence: 63%

“…In mechanically powered type erosion testers, the particles are accelerated and launched with mechanical forces rather than compressed air. The three main types of mechanical erosion testers are: the centrifugal erosion tester [25][26][27][28][29][30][31], the rotary target with free falling abrasive particles [32], and the rotary cogwheel blaster [33].…”

Section: Mechanically Powered Erosion Testing Equipmentmentioning

confidence: 99%

“…Soderberg et al [25] slightly modified the design, naming it 'Erofuge' and derived the formula for particle velocity, particle fluxes and erosion rates. Based on the original design of Kleis et al and modified design of Soderberg et al, the centripetal accelerator erosion test facility [27][28][29][30][31] that was used by the Wolfson Centre for Bulk Solids Handling Technology of the University of Greenwich consisted of a balanced disc whose velocity of rotation could be varied continuously or fixed at any given value. The disc was 0.12 m in radius and contained six radial channels made from a high quality alumina ceramic.…”

Section: Design and Constructionmentioning

confidence: 99%

“…Furthermore, the test apparatus also affects other parameters of particle dynamics such as particle rotation and particle concentration in the abrasive jet. The experimental determination of particle velocity, particle trajectory, particle dispersion, and particle rotation has shown how they influenced particle movement and therefore the particle impact conditions [28].…”

Section: Particle Dynamicsmentioning

confidence: 99%

“…Deng et al [28,29] carried out a theoretical analysis and detailed experimental study of particle dynamics in the centrifugal erosion tester. A computational model was developed for the calculation of particle dynamic parameters.…”

Section: Particle Dynamicsmentioning

confidence: 99%

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The Effect Of Tangential Velocity Component In Abrasive Jet Micro-Machining Of Borosilicate Glass

Hasem¹

2021

Preprint

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Generally two types of erosion testers are used in solid particle erosion testing: air blast erosion testers and mechanically powered erosion testers. In the first portion of this thesis, the feasibility of implementing a mechanically powered erosion tester for abrasive jet micro-machining applications using very small particles was studied. It was found that, due to the ultrahigh vacuum requirement, such a device would not be practical. Therefore, in the second part of the thesis, the designed rotary mechanism was utilized as a rotary disc target holder apparatus and blasted with a typical air blast system. The apparatus could add or deduct a tangential velocity component into the system, allowing for detailed studies of the effect that the tangential velocity component has on the erosion of borosilicate glass using 25-150 μm aluminum oxide particles. Although the tangential velocity effect has been ignored for brittle materials by most researchers, the present results show that it can have an important role in erosion rate.Generally two types of erosion testers are used in solid particle erosion testing: air blast erosion testers and mechanically powered erosion testers. In the first portion of this thesis, the feasibility of implementing a mechanically powered erosion tester for abrasive jet micro-machining applications using very small particles was studied. It was found that, due to the ultrahigh vacuum requirement, such a device would not be practical. Therefore, in the second part of the thesis, the designed rotary mechanism was utilized as a rotary disc target holder apparatus and blasted with a typical air blast system. The apparatus could add or deduct a tangential velocity component into the system, allowing for detailed studies of the effect that the tangential velocity component has on the erosion of borosilicate glass using 25-150 μm aluminum oxide particles. Although the tangential velocity effect has been ignored for brittle materials by most researchers, the present results show that it can have an important role in erosion rate.

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Section: Particle Dynamicssupporting

confidence: 63%

Section: Mechanically Powered Erosion Testing Equipmentmentioning

confidence: 99%

Section: Design and Constructionmentioning

confidence: 99%

Section: Particle Dynamicsmentioning

confidence: 99%

Section: Particle Dynamicsmentioning

confidence: 99%

See 3 more Smart Citations

The Effect Of Tangential Velocity Component In Abrasive Jet Micro-Machining Of Borosilicate Glass

Hasem¹

2021

Preprint

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Aligned carbon nanotube reinforced high performance polymer composites with low erosive wear

Jinhu

Trevarthen

Deng

et al. 2014

Composites Part A: Applied Science and Manufacturing

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__________________________________________________________________________________________Please note that where the full text version provided on GALA is not the final published version, the version made available will be the most up-to-date full-text (post-print) version as provided by the author(s). Where possible, or if citing, it is recommended that the publisher's (definitive) version be consulted to ensure any subsequent changes to the text are noted. Citation for this version held on GALA:Chen, Jinhu, Trevarthen, James A., Deng, Tong, Bradley, Michael S.A., Rahatekar, Sameer S. and Koziol, Krzysztof K.K. (2014) This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractThe erosive wear behaviour of epoxy composites reinforced with aligned, as-produced carbon nanotube (CNT) films was investigated. The CNT film composites were fabricated in two different configurations, where the unidirectional (0°) and bi-directional (0°/90°) aligned CNT films were exposed to the particle stream. Results have shown that the unidirectional (0°) CNT film/epoxy composite exhibit superior erosive wear resistance compared to the unidirectional (0°) carbon fibre reinforced epoxy composite.Furthermore, the bi-directional (0°/90°) CNT film/epoxy composite shows even better resistance to erosion compared to the unidirectional (0°) CNT film/epoxy composite due to additional impact energy absorption resulted from CNT networks. Scanning Electron Microscopy (SEM) provides further insight into the erosive wear mechanisms of CNT film composites at different impingement angles. This work has successfully introduced aligned as-produced CNT films fabricating epoxy composites using

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Particle attrition mechanisms, their characterisation, and application to horizontal lean phase pneumatic conveying systems: A review

et al. 2018

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Understanding particle attrition is vital to the optimisation of a wide range of industrial processes. Lean phase pneumatic conveying is one such process, whereby the high energy particle impacts can cause undesirable loss in product quality or change in bulk behaviour. The attrition process is resolved into a material function and a process function; the combination of these functions dictate the attrition mechanism present, and the magnitude of failure observed. Subsequently, the forces applied to the particles are examined within the context of lean phase pneumatic conveying. Finally, empirical and numerical models are reviewed along with comments on experimental method. To summarise some of the findings of this review: the requirement of standardised test equipment is recognised in order to compare the wide variety of particulate materials under comparable loading conditions; stronger correlation between the results obtained from different particle attrition test methods is required; and finally, seldom are the manufacturing conditions (where applicable) linked to the particulate attrition behaviour.

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An investigation of particle dynamics within a centrifugal accelerator type erosion tester

Cited by 17 publications

References 5 publications

The Effect Of Tangential Velocity Component In Abrasive Jet Micro-Machining Of Borosilicate Glass

The Effect Of Tangential Velocity Component In Abrasive Jet Micro-Machining Of Borosilicate Glass

Aligned carbon nanotube reinforced high performance polymer composites with low erosive wear

Particle attrition mechanisms, their characterisation, and application to horizontal lean phase pneumatic conveying systems: A review

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