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벨로우즈를 이용한 반복 하중부과장치의 개발 및 성능시험
최명환(M.H. Choi),조만순(M.S. Cho),김봉구(B.G. Kim),김학노(H.R. Kim) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
A fatigue capsule is one of the special capsules to investigate the fatigue characteristics of the nuclear materials in a research reactor, HANARO. In this study, the performance test and the preliminary fatigue test results by using a cyclic load device newly developed for a fatigue capsule are described. In order to obtain the characteristics such as a realization and a controllability of the periodic wave shape and the relation between the pressure and the load, a spring and rigid bar specimens are used. The fatigue test for the STS 316L specimen with 1.8㎜ in diameter and 12.5㎜ in gage length is also performed under the same conditions as the temperature(550℃) of the specimen during irradiation tests. As a result of the test, the fracture of the specimen occurs at a total of 127,865 cycles (22 days), and the displacement is 2.63㎜. It is expected that these results will be used for a determination of test conditions and a comparison of the in-pile fatigue test results.
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박국남(K.N. PARK),박종학(J.H. PARK),이정영(C.Y. LEE),김학노(H.R. KIM),유성연(S.Y. YOO) 한국유체기계학회 2006 유체기계 연구개발 발표회 논문집 Vol.- No.-
The Fuel Test Loop(FTL) has been developed for the irradiation test of nuclear fuels. The FTL provides the test conditions similar to the operation conditions of the PWR and CANDU nuclear plants. The FTL consists of In-Pile Test Section(IPS) and Out-of-Pile System(OPS). The IVA(IPS Vessel Assembly) could be divided into an external assembly and an interior assembly from a total assembly. IVA is to dual pressure vessel which nuclear fuel is assembled on interior. For a domestic production characteristic confirmation and a design verification IVA mock-up it produced. IVA mock-up where it is produced were used in vibration test and differential pressure test. In order to verify the pressure-drop prediction in the IVA, a series of pressure-drop test has been carried out by using the IVA mock-up. As a result of the experiment, it is found that the measured pressure drop shows a good agreement with the calculated pressure drop.
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