Comparative Study of Response of Vibrations for Circular …
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Table 5 Taguchi method plan and results
Trial No. Defect type 1
2
3
Amplitude
(Vibrometer)
(µm)
Amplitude
(FFT) (µm)
Mathematical
model
1
Circular
1
1000 10 22
22.932
21.06
2
1
1000 15 24
26.262
24.02
3
1
1500 10 28
30.912
28.50
4
1
1500 15 27
29.532
27.22
5
Square
1 * 1 1000 10 25
27.573
25.64
6
1 * 1 1000 15 24
27.110
24.80
7
1 * 1 1500 10 26
29.110
26.43
8
1 * 1 1500 15 27
29.262
27.00
Trial 1
Trial 5
Fig. 5 Amplitude versus frequency plot
Figure 5 shows amplitude of vibration for the circular and square defect on rolling
element of bearing only.
Vibration amplitude was calculated by a mathematical model developed using
dimensional analysis Eq. (7). The values of amplitude of vibration predicted by the
mathematical model and experimental results are shown in Table 5. It is clear that the
numerical results and experimental results show good agreement for all eight trials.
6 Conclusion
Summary of outcomes of the investigations:
1. The result obtained using a mathematical model for trial 1 is 22.932 µm and
experimental analysis is 21.06 µm matches. Similarly, results in all cases match
as shown Table 5.