PCB 비파괴 검사에 있어서 단일 에너지 소스와 이중 에너지 소스의 영상비교를 위한 엑스선 스펙트럼 분석

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Reliability of printed circuit board (PCB), which is based on high integrated circuit technology, is having been important because of development of electric and self-driving car. In order to answer these demand, automated X-ray inspection (AXI) is best solution for PCB nondestructive test. PCB is consist of plastic, copper, and, lead, which have low to high Z-number materials. By using dual energy X-ray imaging, these materials can be inspected accurately and efficiently. 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 has materials that has wide range of Z-number. In this work, we found out several things by analysis of X-ray energy spectrum. Separating between lead and combination of plastic and copper is only possible with energy range not dose. On the other hand, separating between plastic and copper is only with dose not energy range. Moreover the copper filter of high energy part of dual X-ray imaging and 50 kVp of low energy part of dual X-ray imaging is best for efficiency.
Publisher
한국방사선산업학회
Issue Date
2015-09
Language
Korean
Citation

한국방사선산업학회지, v.9, no.3, pp.153 - 159

ISSN
1976-2402
URI
http://hdl.handle.net/10203/218779
Appears in Collection
NE-Journal Papers(저널논문)
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