By Victor M. Baranov,Evgeny M. Kudryavtsev,Gennady .A. Sarychev, et al.Elsevier|Elsevier Science||Elsevier ScienceAdult NonfictionScience, Technology, EngineeringLanguage(s): EnglishOn sale date: 08.04.2011Street date: 29.07.2011Preview
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Extra resources for Acoustic Emission in Friction
E. friction surface damage. 3. Sources of AE Signals at Friction of Solids Sources of AE Elastic interaction, impacts Changes in stress-strain state of a local volume of solid surface layer Plastic deformation, damage Generation, motion and interaction of dislocations Energy liberation at repeated deformation or phase hardening-weakening and damage of surface layer Changes in friction surface structure Formation of microcracks, micropores and new surfaces because of wear Appearance of wear debris Surface spalling and formation of fatigue pit Characteristics of AE are sensitive to the wear mode.
SIMULATION OF CHARACTERISTICS OF ACOUSTIC EMISSION IN FRICTION 41 If the characteristic size of the latter is less than the spacing between them then within a single spot we can neglect contributions of other spots to the surface deformation and assume the deformation to be determined only by the pressure distribution over the spot under consideration. 3) Sj Here the coordinates r = x y change within the spot and in its vicinity. Deformation within contact spots depends on the mean distance between the surfaces that is governed by the force pressing them together.
18. G. V. A. Shtremel, Acoustic emission characteristics describing single brittle crack, Defect Control (in Russian), 1994, no 12, pp. 29–34. 19. M. Rogers, The application of vibration signature analysis and acoustic emission source location to on-line condition monitoring of anti–friction bearing, Tribology International, 1979, vol. 12, no 2, pp. 51–59. 20. A. M. Schavelin, Acoustic emission method for research and control of friction pairs, Tribology International, 1991, vol. 24, no 1, pp. 11–16.