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Accuracy and Usefulness Evaluation of the Phased Array Ultrasonic Testing for Thermal Fatigue Cracks
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열피로 균열에 대한 위상배열 초음파 탐상 검사 정확도 및 유용성 평가

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Type
Academic journal
Author
Houng Kun Ann (서울과학기술대학교) Woong Gi Hwang (호진산업기연) Jae Seong Kim (고등기술연구원) Ik Keun Park (서울과학기술대학교)
Journal
The Korean Society For Nondestructive Testing JOURNAL OF THE KOREAN SOCIETY FOR NONDESTRUCTIVE TESTING Vol.39 No.4 KCI Accredited Journals
Published
2019.8
Pages
238 - 244 (7page)
DOI
10.7779/JKSNT.2019.39.4.238

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Accuracy and Usefulness Evaluation of the Phased Array Ultrasonic Testing for Thermal Fatigue Cracks
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Abstract· Keywords

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Thermal fatigue cracking is one of the flaws that can occur in nuclear power plant components and cause problems in maintaining the integrity of nuclear power plants. Therefore, to prevent such problems, nondestructive testing of nuclear power plant components is being performed. Radiographic testing and ultrasonic testing are the primary applied as the inspection methods for components. However, radiographic testing is decreasing in proportion because of radiation exposure and nuclear safety regulations. Alternatively, the proportion of ultrasonic testing is increasing. In particular, phased array ultrasonic testing is applied, replacing a wide range of tests, such as radiographic testing. In this study, the accuracy and usefulness of phased array ultrasonic depth sizing of weldment cracks and artificial flaws are investigated through the evaluation of the average error and RMS error values.
#열피로 균열 #위상배열 초음파탐상검사 #인공결함 시험편 #열피로 균열 시험편 #평균 오차 #RMS 오차 #Thermal Fatigue Crack #Phased Array Ultrasonic Testing #Notch Specimen #Thermal Fatigue Crack Specimen #Average error #RMS (Root Mean Square) Error

Contents

초록
Abstract
1. 서론
2. 실험 장치 및 방법
3. 실험 결과
4. 결론
References

References (9)

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M. Guyette / 1995 / Inverse and direct transfer functions for the fatigue follow-up of piping systems submitted to stratification / Nuclear Engineering and Design 153(2-3):183~195 google schola K. W. Bieniussa / 1999 / Piping specific analysis of stresses due to thermal stratification / Nuclear Engineering and Design 190:239~249 google schola C. L. Atwood / 1999 / Analysis of Pressurized Water Reactor Primary Coolant Leak Events Caused by Thermal Fatigue / ESREL’99-European Safety and Reliability Conference google schola 2013 / The System Improvement Study for Promotion of NDT Technology google schola 조용상 / 2009 / 전자적 스캔에 의한 미소결함길이 평가기법 / 비파괴검사학회지 29(1):15~20 dbpia

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UCI(KEPA) : I410-ECN-0101-2019-530-000980421