• Title/Summary/Keyword: 비파괴기술

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Eddy Current Testing(I) (와전류탐상범(渦電流探傷法)(I))

  • Cheong, Yong-Moo
    • Journal of the Korean Society for Nondestructive Testing
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    • v.13 no.2
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    • pp.94-100
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    • 1993

  • 이번 호부터 해설란을 통하여 비파괴검사(非破壞檢査) 기술(技術)에 대한 연재를 시작한다. 앞으로 비파괴검사(非破壞檢査) 기술(技術) 각 분야에 대해 다룰 예정이며 우선 1차적으로 와전류탐상법(渦電流探傷法)에 관해 3회에 걸쳐 게재하기로 한다. 특정한 비파괴검사(非破壞檢査)의 전문가가 아니더라도 쉽게 이해할 수 있도록 가급적 수식은 배제하고 기초적인 이론을 소개할 것이며 특히 현장 적용에 중점을 두어 기술(記述)하고자 한다. 본 원고에서는 원거리 와전류탐상법(渦電流探傷法)(remote field eddy current testing) 이나 펄스 와전류탐상법(渦電流探傷法)(pulsed eddy current testing)과 같은 특수 와전류(渦電流) 기술(技術)은 제외하였으며 본 연구실에서 내부 교육용으로 사용하는 "와전류탐상법(渦電流探傷法) Level I 과정"과 미국금속학회에서 발행한 Metal Handbook, 9th ed., Vol. 17, "Non-destructive Evaluation and Quality Control" 및 기타 관련 기술 자료들을 참고하였으나 일일이 명기하지는 않는다.

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Review of Non-Destructive Evaluation Technologies for Rail Inspection (철도 레일의 결함 검출을 위한 비파괴탐상 기술)

  • Han, Soon-Woo;Cho, Seung-Hyun
    • Journal of the Korean Society for Nondestructive Testing
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    • v.31 no.4
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    • pp.398-413
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    • 2011

  • For railway safety, it is very important to detect damages of rails at their early stage because any undetected damage in a rail can break the rail and cause a serious railway accident. In this paper, several NDT applicable to rail inspections are described. Major damage types in rails are discussed first and the rail inspection technology using conventional piezoelectric ultrasonic transducers, which is widely adopted for damage detection of rails, is explained. Other NDT being researched or tested for rail inspection are also discussed as complementary technologies to the concurrent contact type ultrasonic inspection. Characteristics of each rail inspection technologies are evaluated in order to provide requirements for future development of a new rail inspection method.

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Nondestructive Testing and Applications for Electric Power Plant Equipments by Acoustic Emissin Technology (음향방출기술에 의한 발전설비 비파괴검사 및 응용)

  • Lee, Sang-Guk
    • Journal of the Korean Society for Nondestructive Testing
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    • v.24 no.4
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    • pp.396-409
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    • 2004

  • Diagnosis f structural integrity is the basis for correct treatment of and countermeasures against progressive structural abnormalities. An exact diagnosis is at present the most reliable means for determining the soundness of structures during power plant operations. Acoustic emission(AE) technology has recently strengthened its application base, and practitioners' understanding of the technique's fundamentals. This paper presents the results of a survey and assessment on AE monitoring applications in nuclear, fossil and hydraulic power plant. The main objective of this paper was to obtain information on various applications of AE technology in electric power plant.

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