Failure Behavior of Pressurized Spherical Tanks Depending on Manufacturing Method

Abstract:

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There are numerous applications of pressure vessels in aerospace field for storing liquid or gaseous media. Generally the metallic vessels have been manufactured by welding two hemispheres, which are machined or spin-formed. In this study, the solid state bonding method was utilized with blow forming to manufacture aerospace titanium tanks. This solid state joining technology replaced the welding process and without any secondary material or liquid phases in bonding process, homogeneous microstructure was obtained at bonding interface. Using this method, a titanium tank of a space vehicle was manufactured and during a hydraulic pressurizing test, the strain and acoustic emission signals are observed to investigate the effect of solid state bonding method on the failure mode and performance of the tank.. This result was compared with the one made by conventional method of spin forming and welding. The result shows that the pressurization rate and the acoustic emission signal increasing rate provide a similar tendency for a vessel of integrity, while the signal increasing rate is much higher than the pressurization rate for a vessel with welding defects. It is clear that the failure mode of the solid state bonded tank is different from the welded tank due to the completely united interface by diffusion process.

Info:

Periodical:

Key Engineering Materials (Volumes 324-325)

Edited by:

M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz

Pages:

551-554

DOI:

10.4028/www.scientific.net/KEM.324-325.551

Citation:

H. S. Lee et al., "Failure Behavior of Pressurized Spherical Tanks Depending on Manufacturing Method ", Key Engineering Materials, Vols. 324-325, pp. 551-554, 2006

Online since:

November 2006

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Price:

$35.00

[1] M.J. Debreceni, W.D. Lay, T.K. Kuo, and D.E. Jaekle, Jr., AIAA96-2749, Proc. of 32 th AIAA/ ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Lake Buena Vista, FL, U.S.A., July(1996).

DOI: 10.2514/6.1998-3200

[2] W.H. Tam, M.J. Debreceni, M.S. Hersh, and C.D. Nye, AIAA99-2831, Proc. of 35 th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit June(1999).

[3] M. Cane, D. Sharp, M. Coleman, and B. Webb, AIAA90-2348, Proc. of 26 th AIAA/SAE/ ASME/ASEE Joint Propulsion Conference, Orlando, FL, U.S.A., July(1990).

[4] B. Dykstra, Metal Forming, Precision Metalforming Association, September, 2001, p.50 (2001).

[5] H.S. Lee and J.H. Yoon, Proc. of Conference on Pressure Vessels Technology, November 28, 2003, Seoul, Korea, The Korean Society of Mechanical Engineers (2003).

[6] MIL-STD-1522A, Standard General Requirements for Safe Design and Operation of Pressures Missile and Space Systems, DOD, U.S.A. (1992).

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