Anomalies in the results obtained from rotating disc accelerator erosion testers: a discussion of possible causes

Burnett, AJ; Bradley, M.S.A.; O'Flynn, D.J; Deng, Tong; Bingley, M.S.

doi:10.1016/s0043-1648(99)00227-6

Cited by 14 publications

(10 citation statements)

References 9 publications

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“…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%

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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: Mechanically Powered Erosion Testing Equipmentmentioning

confidence: 99%

Section: Design and Constructionmentioning

confidence: 99%

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

Hasem¹

2021

Preprint

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“…Figure 11 shows a schematic of such an apparatus. Burnett et al [137] analysed the results obtained from a centrifugal accelerator test apparatus and the subsequent variations within are discussed in depth within the context of erosion. Here, the effect of particle spin was addressed, imparted by the method of acceleration within the test device.…”

Section: Centrifugal Acceleratormentioning

confidence: 99%

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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“…Erosion tests were carried out at impact angles as close as possible to 10 • , 20 • , 30 • , 45 • and 90 • . A horizontally rotated target holder was used for all the erosion tests on the centrifugal accelerator erosion tester so that particle spin effect could be minimised [11]. The targets were exposed to the erodent jet for up to 200 min at each test run depending on the angle of impingement.…”

Section: On the Centrifugal Accelerator Erosion Testermentioning

confidence: 99%

Comparison between weight loss of bends in a pneumatic conveyor and erosion rate obtained in a centrifugal erosion tester for the same materials

Deng¹,

Li²,

Chaudhry³

et al. 2005

Wear

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Anomalies in the results obtained from rotating disc accelerator erosion testers: a discussion of possible causes

Cited by 14 publications

References 9 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

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

Comparison between weight loss of bends in a pneumatic conveyor and erosion rate obtained in a centrifugal erosion tester for the same materials

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