그림 1. 와전류 탐상기 원리 Fig. 1 Principle of eddy current testor
그림 2. 금속의 종류와 주파수에 따른 와전류의 침투 깊이의 변화 Fig. 2 Penetration depth difference according to sort of metal and frequency
그림 3. 와전류 탐상기 하드웨어 블록도 Fig. 3 Hardware block diagram of eddy current detector
그림 4. 와전류탐상시스템 소프트웨어 블록도 Fig. 4 Software block diagram of eddy current detector
그림 5. SAM으로 촬영된 결함 Fig. 5 Defect photograph by SAM
그림 6. 결함별 주파수 특성 Fig. 6 Frequency characteristics according to defects
그림 9. 와전류 탐상기를 이용한 탐상현장 Fig. 9 Testing scene with eddy current testor
그림 7. (a) 정상적인 시험편에서 디스플레이 되는 화면 (b) 결함이 있는 경우에 디스플레이 되는 화면 Fig. 7 (a) Display on normal specimen (b) display on abnormal specimen
그림 8. (a) 정상신호 파형 (b) 결함신호 파형 Fig. 8 (a) Signal on normal specimal (b) signal on abnormal specimen
그림 10. (a) 변속기의 옆모습 (a) 결함이 있음 (b) 결함은 없으나 metal flow가 있음 Fig. 10 (a) Side view of transmission (a) with defects (b) without defects but with metal flow
표 1. 시험조건 Table 1. Testing condition
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