Anomalies in the results obtained from rotating disc accelerator erosion testers: a discussion of possible causes
✍ Scribed by A.J Burnett; M.S.A Bradley; D.J O'Flynn; T Deng; M.S Bingley
- Book ID
- 104266378
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 366 KB
- Volume
- 233-235
- Category
- Article
- ISSN
- 0043-1648
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✦ Synopsis
During recent erosion research at the University of Greenwich using a rotating disc accelerator erosion tester no peak has been observed in the curve of erosion damage vs. angle of impingement. This lack of peak has been observed for tests on a range of steels at a variety of particle impact velocities and fluxes and is contrary to previously reported results. Results of erosion tests on targets at various Ž . orientations are given in this paper. The targets used in this work were all made from 0.8% carbon steel SAE1074 . It is shown that changing the orientation of the target in such a tester can lead to different mechanisms of impact erosion occurring owing to changes in Ž . the particle dynamics at impact. Several reasons for this behaviour are suggested by the authors including: a the variation of particle flux Ž . across the target surface as the angle of orientation of the target to the flow of particles is changed, b the variation in the occurrence of Ž . inter-particulate collisions with the angle of target orientation, and c the effects of particle sliding on the walls of the acceleration mechanism inducing particle spin such that the mechanism of cutting is increased at low angles of particle impingement.