contributor author | Ha, Yoosung | |
contributor author | Tobita, Tohru | |
contributor author | Ohtsu, Takuyo | |
contributor author | Takamizawa, Hisashi | |
contributor author | Nishiyama, Yutaka | |
date accessioned | 2019-02-28T11:06:42Z | |
date available | 2019-02-28T11:06:42Z | |
date copyright | 8/2/2018 12:00:00 AM | |
date issued | 2018 | |
identifier issn | 0094-9930 | |
identifier other | pvt_140_05_051402.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4252790 | |
description abstract | The applicability of miniature compact tension (Mini-C(T)) specimens to fracture toughness evaluation of neutron-irradiated reactor pressure vessel (RPV) steels was investigated. Three types of RPV steels neutron-irradiated to a high-fluence region were prepared and manufactured as Mini-C(T) specimens according to Japan Electric Association Code (JEAC) 4216-2015. Through careful selection of the test temperature by considering previously obtained mechanical properties data, valid fracture toughness, and reference temperature (To) was obtained with a relatively small number of specimens. Comparing the fracture toughness and To values determined using other larger specimens with those determined using the Mini-C(T) specimens, To values of both unirradiated and irradiated Mini-C(T) specimens were found to be the acceptable margin of error. The scatter of 1T-equivalent fracture toughness values of both unirradiated and irradiated materials obtained using Mini-C(T) specimens did not differ significantly from the values obtained using larger specimens. The correlation between the Charpy 41 J transition temperature (T41J) and the To values agreed very well with that of the data in the literature, regardless of specimen size and fracture toughness of the materials before irradiation. Based on these findings, it was concluded that Mini-C(T) specimens can be applied to fracture toughness evaluation of neutron-irradiated materials without significant specimen size dependence. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Applicability of Miniature Compact Tension Specimens for Fracture Toughness Evaluation of Highly Neutron Irradiated Reactor Pressure Vessel Steels | |
type | Journal Paper | |
journal volume | 140 | |
journal issue | 5 | |
journal title | Journal of Pressure Vessel Technology | |
identifier doi | 10.1115/1.4040642 | |
journal fristpage | 51402 | |
journal lastpage | 051402-6 | |
tree | Journal of Pressure Vessel Technology:;2018:;volume( 140 ):;issue: 005 | |
contenttype | Fulltext | |