Study on the Autofrettage Pressure for SCBA Type3 Cylinder

Title & Authors
Study on the Autofrettage Pressure for SCBA Type3 Cylinder
Kim, Kwang Seok; Lee, Kyomin; Lee, Jaehun; Cho, Seongmin;

Abstract
In this study, experiments and finite element method analysis were used to determine the autofrettage pressure that is optimal and then maximizes the cycling life of Type3 composite cylinders used in self-contained breathing apparatus. For both approaches, the cylinders were pressurized at 100, 110, $\small{{\ldots}}$, 290 % of the test pressure, respectively. The stresses were computed by the FEM analysis; while the strains of cylinders were recorded and the failure modes were monitored during the cycling test. As a result, from the good agreements between the simulations and experiments, it was concluded that at least 70 % of the test pressure should be applied as the autofrettage pressure in order to takes visible effect on the cycling life, and 160 % of the test pressure induces the maximum cycling life and the desired failure mode.
Keywords
Type3 Cylinder;Autofrettage Pressure;Cycling Life;Failure Mode;
Language
Korean
Cited by
References
1.
B. S. Kim, B. H. Kim, J. B. Kim, and C. R. Joe, 1997, "Study on the developing of composite CNG pressure vessels," ICCM-11, Int'l Conf. on Composite Materials, Gold Coast, Australia, pp. 401-418.

2.
Rosata D. V. and Grove C. S., 1984, "Filament winding: its development, manufacture, application, and design," Interscience Publishers.

3.
James D. E. and James A. Y., 1987, "Graphite epoxy pressure vessel dome reinforcement study," 32nd International SAMPE Symposium.

4.
Sun X. K., Du S. Y., and Wang G. D., 1999, "Bursting problem of filament wound composite pressure vessels," International Journal of Pressure Vessels and Piping, Vol. 76, pp. 55-59.

5.
Mohammad Z. K., 2000, "Finite element analysis of composite pressure vessels with a load sharing metallic liner," Composite Structure, Vol. 49, pp. 247-255.

6.
Kwang T. K., Jung S. K., Doh Y. D., Cho W. M., and Jung B., 2000, "The Performance Improvement of Filament Wound Composite Pressure Vessels," SAMPE, pp. 1427-1438.

7.
Park J. S., Jeung S. S., and Chung J. H., 2006, "Cycling life prediction method considering compressive residual stress on liner for the filament-wound composite cylinders with metal liner," The Korean Society for Composite Materials, Vol. 19, No. 1, pp. 22-28.