![Oiwake [town] - Oiwake](/upload/images/67cb102930eea.webp)
Penetrant testing
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A type of non-destructive testing. A colored liquid or a solution of a fluorescent substance is applied to the object being tested, and is allowed to soak into cracks, pinholes, and other flaws. A fine white powder (developer) is then used to highlight the defects, allowing them to be detected. Unlike magnetic flaw detection, this method can also be used on non-magnetic materials, but it cannot be applied unless the defects are visible on the surface. Source : Heibonsha Encyclopedia About MyPedia Information |
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非破壊検査の一つ。着色した液体または蛍光物質の溶液を被検査物に塗り，割れ目やピンホールなどのきずにしみ込ませ，白色微粉末（現像剤）によって欠陥を目立たせて検出する。磁気探傷法と違い非磁性体にも利用できるが，欠陥が表面に現れていないと適用できない。
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