Calibration of hoop stress in ring tensile test with Zircaloy-4 tube

Title
Calibration of hoop stress in ring tensile test with Zircaloy-4 tube
Author
윤종헌
Keywords
Zirconium (Zr) alloy; Zircaloy-4 tube; Hoop stress; Digital image correlation (DIC); ARAMIS; Hill yield criterion
Issue Date
2017-09
Publisher
KOREAN SOC MECHANICAL ENGINEERS
Citation
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v. 31, No. 9, Page. 4183-4188
Abstract
Since Zirconium (Zr) alloys have been widely used as cladding material in a nuclear fuel rod, material properties of Zr are essential in prediction of failure and undesirable deformation. This paper mainly concerns calibration procedure to obtain the hoop stress of Zircaloy-4 tube with a simple ring tensile (RTT) test linking with a Digital image correlation (DIC) technique since it is substantially difficult to obtain, directly, with specialized experiment such as burst test with internal pressure. The uniaxial tensile tests along the axial and RTT along the hoop directions were conducted with Zircaloy-4 tube in which anisotropic stains were analyzed with a DIC technique to validate appropriate deformation history. Anisotropic yield criterion based on the measured R-values (R-theta = 1.88 and R-z = 0.814) is able to capture the precise deformation mode in the ring tensile test. The flow curve along the hoop direction is calibrated by converting F, G, and H material parameters based on the R-values to the function of stress ratios.
URI
https://link.springer.com/article/10.1007/s12206-017-0815-8http://repository.hanyang.ac.kr/handle/20.500.11754/72357
ISSN
1738-494X; 1976-3824
DOI
10.1007/s12206-017-0815-8
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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