In this paper, both experimental and analytical investigations have been conducted to investigate the fuel sheath (also known as clad tube) ballooning deformation and subsequent bursting. The work has been performed to simulate ballooning deformation of fuel sheaths under different heating rates and internal pressures in an inert atmosphere. An experimental setup has been designed to capture the temperature, pressure, and wall displacement data during the ballooning deformation of the sheath specimen. Also, a computer code in MATLAB has been developed to compute the stresses and strains at the ballooning site of the fuel sheath. The developed model has been validated with present and past experimental studies. A parametric study has also been conducted to study the effect of internal pressure, heating rate, and sheath dimensions on hoop or circumferential strain.
Ballooning Deformation of Zircaloy-4 Fuel Sheath
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received January 29, 2013; final manuscript received November 24, 2013; published online February 27, 2014. Assoc. Editor: Spyros A. Karamanos.
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Kaleem Khan, M., and Pathak, M. (February 27, 2014). "Ballooning Deformation of Zircaloy-4 Fuel Sheath." ASME. J. Pressure Vessel Technol. June 2014; 136(3): 031206. https://doi.org/10.1115/1.4026146
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