621 非定常な表面熱画像の逆解析による構造物剥離損傷の検出

• 鈴木 勝也

  京都工芸繊維大学大学院工芸科学研究科機械システム工学専攻

• 増田 新

  京都工芸繊維大学大学院工芸科学研究科機械システム工学部門

書誌事項

タイトル別名

• 621 Detection of Debonding Failure in a Structure by Inverse Analysis of Nonstationary Thermal Images

抄録

This paper presents a method to identify the geometrical shape and the location of the debonding failure embedded in a concrete structure by processing nonstationary thermal images of the structural surface captured by an infrared thermography camera. In the proposed method, the structure is modeled as a homogeneous infinite plate whose boundary condition on the observed surface is known. The temperature field in the plate is represented by a truncated power series with respect to time, and a layer-by-layer inverse analysis scheme using a regularized interlayer transfer matrix based on 2D Fourier transform is carried out to obtain the sharper image of the failure as well as the depth of the damaged layer. The estimated depth is mapped as a depth image which displays the shape of the failure as well as their depth. The influence of the truncation order as well as the time interval of measurement is investigated by numerical simulations and experiments.

収録刊行物

• Dynamics & Design Conference

  Dynamics & Design Conference 2012 (0), _621-1_-_621-9_, 2012

  一般社団法人 日本機械学会

キーワード

• Infrared thermography
• Inverse analysis
• Concrete structure
• Non-stationary heat conduction

詳細情報

• CRID: 1390001205889104640
• NII論文ID: 110009907841
• DOI: 10.1299/jsmedmc.2012._621-1_
• ISSN: 24242993
• Web Site: https://www.jstage.jst.go.jp/article/jsmedmc/2012/0/2012__621-1_/_pdf
• 本文言語コード: ja
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