日本応用磁気学会誌
Online ISSN : 1880-4004
Print ISSN : 0285-0192
ISSN-L : 0285-0192
計測・磁気応用
渦電流探傷技術によるプリント配線の欠陥検出
藤城 久山田 外史岩原 正吉
著者情報
ジャーナル オープンアクセス

1998 年 22 巻 4_2 号 p. 853-856

詳細
抄録
Eddy-current testing (ECT) is a powerful and useful technique for detecting cracks and flaws in uniform conductive plates and pipes. We investigated the diagnostics of printed circuit boards (PCBs) as a new application of ECT. Recent high-density PCBs require a new cost-effective testing system for the production phase. ECT is an interesting approach for inspection of as-made printed wirings, because it uses non-contact testing, low stress, conductive testing, and fast scanning. This paper describes the detection characteristics for some flaws in printed wirings. We experimentally examined the use of ECT for inspecting disconnections, chipping defects, and imperfections in the thickness of printed wirings. The results confirm than the ECT approach is attractive and effective for PCB diagnostics.
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© 1998 (社)日本応用磁気学会
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