Automatic Solder Joint Inspection System by X-ray Imaging.
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- HAMADA Toshimitsu
- 正会員 (株) 日立製作所生産技術研究所 (現, 同社営業本部)
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- NAKAHATA Kozo
- (株) 日立製作所生産技術研究所
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- FUSHIMI Satoru
- (株) 日立製作所生産技術研究所
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- MORIOKA Yoshifumi
- (株) 日立製作所旭工場
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- NISHIDA Takehiko
- 日立電子 (株)
Bibliographic Information
- Other Title
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- X線式はんだ付検査装置の開発
- Xセンシキ ハンダズケ ケンサ ソウチ ノ カイハツ
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Abstract
This paper describes an automatic solder joint inspection system by X-ray imaging. The following were developed for highly reliable inspection of J-lead and gull-wing lead solder joints : (1) An automatic inspection method for double side-mounted PCBs (Printed Circuit Boards) by micro-focus X-ray imaging and board tilting, (2) Enhancement of X-ray image of solder joints by logarithmic transformation of a detected image, (3) Fillet judgement by comparison between a detected image and a number of typical nondefective images selected by a clustering procedure, (4) Bridge determination by multi-step thresholding and comparison between pattern frequency distribution of a detected image and that of a nondefective image. The inspection system developed with these technologies had a defect detection rate of 100% with the smallest detectable defect being 50 μm.
Journal
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- Journal of the Japan Society for Precision Engineering
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Journal of the Japan Society for Precision Engineering 59 (1), 65-71, 1993
The Japan Society for Precision Engineering
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Details 詳細情報について
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- CRID
- 1390282679741774208
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- NII Article ID
- 110001371172
- 10003991048
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- NII Book ID
- AN1003250X
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- ISSN
- 1882675X
- 09120289
- http://id.crossref.org/issn/09120289
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- NDL BIB ID
- 3812341
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed