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 info for Acoustic Emission in Friction
2) from the viewpoint of their correlation with processes in the friction zone and requirements to hardware used to register the signals. The following statistical characteristics of electrical signals produced by an acoustic emission detector serve as basic characteristics of discrete AE: the total number of pulses, the number of pulses per unit time, the amplitude distribution of pulses and its statistical moments, the amplitude-time distribution of pulses, the spectral density (or the correlation function), and the probability densities of the signal characteristics.
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. 36 CHAPTER 1 21.
8) that the lesser (or the gage quality factor), the closer is the amplitude distribution at predetection count to the initial distribution. 8) serves to reconstruct the initial amplitude distribution of AE pulses based on the distribution registered at predetection count. It is apparent that the same reasoning is true for the amplitude-time distribution of AE pulses. In this case n A should be replaced with a function describing the amplitude-time distribution of pulses n A, t). The obtained relations allow one to determine a correlation between the total AE N and the count rate N˙ at predetection and postdetection count.
Acoustic Emission in Friction 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