PCB 비파괴 검사에 있어서 단일 에너지 소스와이중 에너지 소스의 영상비교를 위한 엑스선 스펙트럼 분석
Energy Spectrum Analysis between Single and Dual Energy Source X-ray Imaging for PCB Non-destructive Test
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초록
Reliability of printed circuit board (PCB), which is based on high integrated circuittechnology, is having been important because of development of electric and self-driving car. Inorder to answer these demand, automated X-ray inspection (AXI) is best solution for PCB nondestructivetest. PCB is consist of plastic, copper, and, lead, which have low to high Z-numbermaterials. By using dual energy X-ray imaging, these materials can be inspected accurately andefficiently. Dual energy X-ray imaging, that have the advantage of separating materials, however,need some solution such as energy separation method and enhancing efficiency because PCB hasmaterials that has wide range of Z-number. In this work, we found out several things by analysisof X-ray energy spectrum. Separating between lead and combination of plastic and copper is onlypossible with energy range not dose. On the other hand, separating between plastic and copperis only with dose not energy range. Moreover the copper filter of high energy part of dual X-rayimaging and 50 kVp of low energy part of dual X-ray imaging is best for efficiency.
Abstract
Reliability of printed circuit board (PCB), which is based on high integrated circuittechnology, is having been important because of development of electric and self-driving car. Inorder to answer these demand, automated X-ray inspection (AXI) is best solution for PCB nondestructivetest. PCB is consist of plastic, copper, and, lead, which have low to high Z-numbermaterials. By using dual energy X-ray imaging, these materials can be inspected accurately andefficiently. Dual energy X-ray imaging, that have the advantage of separating materials, however,need some solution such as energy separation method and enhancing efficiency because PCB hasmaterials that has wide range of Z-number. In this work, we found out several things by analysisof X-ray energy spectrum. Separating between lead and combination of plastic and copper is onlypossible with energy range not dose. On the other hand, separating between plastic and copperis only with dose not energy range. Moreover the copper filter of high energy part of dual X-rayimaging and 50 kVp of low energy part of dual X-ray imaging is best for efficiency.
참고문헌 (8)
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