초록

종래의 누설자속탐상과 와전류탐상을 (1) X-ray 조사환경에서 (2) 고속 (3) 원격으로 영상화할 수 있는 (1) 면적형, (2) 스캔형, (3) 소구경 보빈형 자기벡터카메라를 개발하였다. 누설자속탐상의 경우 직경 500㎛ 깊이 50㎛의 마이크로균열을 탐상 가능하였다. 해당 기술을 이용하여 장기운영항공기(이면부식/이면결함), 원자력발전소(열교환기/증기발생기), 부품소재(개재물/자구관찰) 분야의 비파괴검사에의 응용가능성을 확인하였다.

Abstract ▼

Ⅳ. Results
1. Realization of imaging speed at 40 frames/s using the developed area-type integrated vector sensor array (AIVeS), which consists of an area-type integrated Hall sensor array (AIHaS) of a 32-by-32 matrix-type Hall sensor array with 780㎛ resolution and area-type integrated GMR sensor

Ⅳ. Results
1. Realization of imaging speed at 40 frames/s using the developed area-type integrated vector sensor array (AIVeS), which consists of an area-type integrated Hall sensor array (AIHaS) of a 32-by-32 matrix-type Hall sensor array with 780㎛ resolution and area-type integrated GMR sensor array (AIGiS) of 16-by-8 matrix-type GMR sensor array with 780/1510㎛ resolution.
2. Realization of imaging speed at 1450 mm/s using the developed linear-type integrated vector sensor array (LIVeS), which consists of the linear-type integrated Hall sensor array (LIHaS) of 64 Hall sensors with 520㎛ resolution and linear-type integrated GMR sensors array (LIGiS) of 64 GMR sensors with 520㎛ resolution.
3. Development of bobbin-type integrated vector sensor array (BIVeS), which consists of a bobbin-type integrated Hall sensor array (BIHaS) with 71 Hall sensors with 600㎛ resolution and bobbin-type integrated GMR sensor array (BIGiS) with the same numbers and resolution with BIHaS. It was possible to visualize the eddy current in the small bore-piping system with an inner diameter of 16.6 mm.
4. Development of signal processing circuits that use an auto-zero amplifier. The sensitivities were 66nT and 6.65mT@40dB in the static and dynamic magnetic fields, respectively.
5. Development of prototype signal processing circuits that use the remote gain controller with three bits. The gains were in the range of 1-1000.
6. Development of software that can visualize the distribution of a magnetic vector field due to the leakage magnetic flux and eddy current by using a Hall sensor array (LIHaS, BIHaS, and AIHaS) and GMR sensor array (LIGiS, BIGiS, and AIGiS).
7. Crack which has a width of 500㎛ and depth of 50㎛ in the 9Cr-1Mo-V specimen was detected
8. Crack which has a length of 10mm, width of 0.1mm and depth of 0.2mm in the Inconel 718 specimen was detected.
9. Application in a heat exchanger (Cu- and Ti-alloy) inspection and comparison with previous eddy current testing.
10. Application in a steam generator inspection of sodium-cooled fast reactor (SFR) and comparison with previous remote field eddy current testing (RFECT).
11. Application in a cold-rolled steel inspection and comparison with previous magnetic particle testing.
12. Application in a silicon steel inspection and comparison with previous magnetic particle testing.
13. Application in an engine bracket inspection and comparison with C-scan eddy current testing.
14. Application in a far-side corrosion inspection and comparison with C-scan eddy current testing.
15. Verification of the high-speed antiradiation inspection and the long-distance signal transmission ability of the developed magnetic vector field camera.

목차 Contents

• 표 지 ... 1
• 제 출 문 ... 2
• 보고서 요약서 ... 3
• 요 약 문 ... 4
• SUMMARY ... 7
• CONTENTS ... 10
• 목 차 ... 13
• 제1장 연구개발과제의 개요 ... 16
• 1.1 연구개발의 목적 ... 16
• 1.2 연구개발의 필요성 ... 16
• 1.2.1 기술적 측면 ... 16
• 1.2.2 경제 산업적 측면 ... 18
• 1.2.3 사회 문화적 측면 ... 20
• 1.3 연구개발의 범위 ... 21
• 제2장 국내외 기술개발 현황 ... 23
• 제3장 연구개발수행 내용 및 결과 ... 26
• 3.1 자기센서배열 ... 26
• 3.1.1 출력특성 ... 26
• 3.1.2 자기센서배열 ... 42
• 3.2 고감도 증폭회로 ... 61
• 3.2.1 누설자속탐상용 DC증폭 ... 61
• 3.2.2 와전류탐상용 AC증폭 ... 68
• 3.3 방사선환경 저잡음 고속 장거리 신호전송 ... 75
• 3.3.1 방사선환경실험 ... 75
• 3.3.2 장거리 신호전송실험 ... 85
• 3.3.3 고속 신호전송 실험 ... 89
• 3.4 고속 2차원 벡터표현 및 정량평가 알고리즘 ... 91
• 3.4.1 3축 AMR 센서에 의한 자기벡터표현 소프트웨어 ... 91
• 3.4.2 선형‧ 보빈형 배열 센서에 의한 자기벡터표현 소프트웨어 ... 92
• 3.4.3 면적형 배열 센서에 의한 자기벡터표현 소프트웨어 ... 93
• 3.4.4 정량평가 알고리즘 ... 94
• 3.5 자기벡터카메라의 응용 및 종래 기술 비교 ... 112
• 3.5.1 원자력분야 ... 112
• 3.5.2 부품소재분야 ... 130
• 3.5.3 항공우주분야 ... 143
• 제4장 목표달성도 및 관련분야에의 기여도 ... 150
• 제5장 연구개발결과의 활용계획 ... 159
• 제6장 연구개발과정에서 수집한 해외과학기술정보 ... 160
• 제7장 참고문헌 ... 161
• 끝페이지 ... 163