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Table 2. Natural frequencies for 1 in. flange
connections, with axial coil, showing the
effects of reducing tube height and flange size;
(A) infield configuration, (B) modified
configuration

1 11.5 16.5
2 22.5 53.4
3 35.9 100.0
4 45.5 132.3
5 111.6 144.8
6 147.8 246.2
7 299.3 300.2
8 344.1 354.0
9 353.1 356.3
10 356.3 428.4

REFERENCES

1. AI-Asmi, K., Seibi, A,, Samanta, B. and Siddiqui, R., Investigation into the Failure of Pressure Transmitter Impulse Line.
Sahma Booster Station, Internal Report ME/SQU/July, 1995.
2. Callistcr, Jr, W. D., Material Science and Engineering--An Introduction, 3rd ed. John Wiley & Sons, Inc., 1994.
3. Hertzberg, R. W., Deformation and Fracture Mechanics of Engineering Materials, 2nd ed. John Wiley & Sons, Inc., 1983.
4. Shigley, J. S. and Mischke, C. R., Mechanical Engineering Des@, 5th ed. McGraw-Hill, 1989.