Development of Nondestructive Testing Technique for Concrete Structure Using Active Thermal Stimulation

• Sakagami Takahide

  大阪大学大学院工学研究科

• Kubo Shiro

  大阪大学大学院工学研究科

• Hara Humito

  近畿日本鉄道

• Banshotani Takashi

  近畿日本鉄道

Bibliographic Information

Other Title

• アクティブ熱負荷赤外線サーモグラフィ法によるコンクリート構造物の非破壊検査
• アクティブ ネツフカ セキガイセン サーモグラフィホウ ニ ヨル コンクリート コウゾウブツ ノ ヒハカイ ケンサ

Abstract

Thermographic NDT technique using an active thermal stimulation 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. Evaporation cooling by water spray was used for active cooling. Preliminary experimental investigations were carried out for concrete specimens with artificial delamination defects. It was found that delamination defects can be detected from the thermal images, in which localized high or low temperature regions appeared above the delamination defects. Proposed technique was applied for the inspection of actual delamination defects in the concrete railway bridges. It was found that the defect shape was clearly estimated from the localized temperature region appeared in thermal images under active thermal stimulation.

Journal

• Journal of the Japanese Society for Experimental Mechanics

  Journal of the Japanese Society for Experimental Mechanics 1 (1), 34-38, 2001

  The Japanese Society for Experimental Mechanics

Keywords

• Thermographic NDT
• Infrared Thermography
• Delamination Defects
• Active Heating
• Concrete Structures

Details

• CRID: 1390282680167367808
• NII Article ID: 10008203288
• NII Book ID: AA11822914
• DOI: 10.11395/jjsem2001.1.34
• ISSN: 18844219
• ISSN: 13464930
• NDL BIB ID: 5819407
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5819407
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed