1308 赤外線サーモグラフィを用いたコンクリート構造物の欠陥検出試験(次世代のメンテナンス手法(2))(OS21 メンテナンスとコストダウン)(シンポジウム : 第7回鉄道技術連合シンポジウム(J-RAIL 2000))

概要

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Thermographic NDT technique using an active heating and cooling method was applied for the detection of delamination defects in concrete structures. An oil heater, which can apply heat flux to the objective body by radiation and convection heat transfer, was employed for active heating. A vaporization cooling after water spray was tested for active cooling method. Experimental investigations were carried out for concrete specimens with artificial delamination defects. It was found that delamination defects can be clearly detected from the thermal images, in which localized high temperature regions appeared above the delamination defects.
2000-12-12