Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7004779 | Wear | 2013 | 27 Pages |
Abstract
Wear of abradable linings has been investigated on a scaled test rig platform, re-creating the wear mechanisms observed between the blade tip and abradable material that occur in an aero-engine compressor. The characterisation of the wear process has been performed using a stroboscopic imaging technique, capable of investigating the nature of the blade tip strike on the abradable, and the adhesive transfer of the material to the blade tip during a test. It was found in tests with low incursion rates that there was adhesive transfer, whereas with high incursion rates a cutting behaviour was observed. Analysis with the stroboscopic imaging technique allowed the adhesive transfer during the test as a function of the rub length to be recorded. Three phases were identified for adhesive transfer during test; an initiation phase with low rate of adhesion, steady state adhesion, and fracture of adhered material followed by re-initiation. These results also highlight how the standard practice of performing analysis of adhered material at the end of a test does not necessarily characterise the overall mechanics of adhesive transfer satisfactorily.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
N. Fois, J. Stringer, M.B. Marshall,