Table 8.

Fatigue lives of critical points under random excitation.

Critical Points	Damages	Lives (h)
A1	1.5 × 10−13	1.86 × 1010
A2	6.67 × 10−9	4.17 × 105
A3	1.78 × 10−16	1.56 × 1013
A4	1.38 × 10−10	2.02 × 107
A5	1.12 × 10−22	2.48 × 1019
A6	1.29 × 10−7	2.16 × 104
B1	2.84 × 10−16	9.79 × 1012
B2	7.91 × 10−11	3.51 × 107
B3	1.39 × 10−23	2.00 × 1020
B4	1.64 × 10−13	1.70 × 1010
B5	5.81 × 10−24	4.79 × 1020
B6	6.30 × 10−8	4.41 × 104