We have developed a new method for measuring time intervals of Acoustic Emission (AE) generation for diagnosis of a radial rolling bearing. The method makes the AE signal itself a trigger of the oscillation of the clock pulse and measures the time interval of AE generation by integration of the clock pulses. The measurement device consists of the threshold, clock, time interval measurement and memory circuit, and was applied to rolling contact fatigue experiments. It was confirmed by the experiments that the measured time intervals of AE generation on the inner raceway or the ball agreed with the value calculated based on the kinetics of the rolling bearing. Moreover, we could identify the elements in which a fatigue crack was propagating by the method before the spalling appeared. The identified elements agreed with the failed elements.

1.
Barkov A. V., Rogov S. N., and Ioudine I. A., 1996, “Algorithms for Automated Rolling Element Bearing Diagnosis,” Proc. Annu. Meet. Vib. Inst., Vol. 20, p. 69.
2.
Berry
J. E.
,
1991
, “
How to Track Rolling Element Bearing Health with Vibration Signature Analysis
,”
Sound Vib.
, Vol.
25
, No.
11
, p.
24
24
.
3.
Carter D. L., 1996, “A New Method of Processing Rolling Element Bearing Signals,” Proc. Annu. Meet. Vib. Inst., Vol. 20, p. 35.
4.
Darlow M. S., and Badgley R. H., 1975, “Early Detection of Defects in Rolling-Element Bearings,” SAE Paper, 750209.
5.
Ensor L. C., Feng C. C., Whittier R. M., and Diercks A. D., 1975, “A Study of the Detection of Bearing Failure,” NASA Connact NAS 8-29916.
6.
Eschmann P., Hasbargen L. and Weigand K., 1953, Die Wa¨lzlagerpraxis, Verlag von R. Oldenbourg, Mu¨nchen, p. 100.
7.
Inoue N., Nishimoto S., Fujimoto Y., and Harada S., 1987, “Failure Detection for Rolling Bearings using Acoustic Emission Technique,” Proc. JAST Tribol. Conf., Osaka, p. 101.
8.
International Organization for Standardization, 1990, “Rolling Bearings—Dynamic Load Ratings and Rating Life—Part 1: Calculation Methods,” International Standard 281.
9.
James
R.
,
Reber
B.
,
Baird
B.
, and
Neal
W.
,
1973
, “
Acoustic Instrumentation Technique predicts Mechanical Failures
,”
The Oil and Gas J.
, Vol.
72
, p.
49
49
.
10.
Yoshioka T. and Mano H., 1997, “Relationship between Acoustic Emission Source Position and Spalling Position in Radial Rolling Bearings,” Proc. 24th Leeds-Lyon Symp. on Tribol., Dowson, D. et al., ed., Elsevier, Amsterdam (in press).
This content is only available via PDF.
You do not currently have access to this content.