A temperature field reconstruction method for debonding defect identification in laminated structures

Abstract The surface temperature is an important parameter capable of detecting and quantifying defects in laminated structures if subjected to a thermal load. In this paper, a temperature field reconstruction method is developed to detect the size of debonding defect in laminated structures. A Tikh...

Full description

Saved in:
Bibliographic Details
Published inJournal of physics. Conference series Vol. 2184; no. 1; pp. 12050 - 12064
Main Authors Wu, T.T., Zhang, C., Ji, H.L., Tao, C.C., Qiu, J.H.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.03.2022
Subjects
Conjugate gradient method
Debonding
Defects
Delamination
Parameter identification
Physics
Reconstruction
Regularization
Stability analysis
Surface temperature
Temperature distribution
temperature field reconstruction
Temperature measurement
Thermal analysis
Tikhonov regularization
Online AccessGet full text

Cover

More Information
Summary:Abstract The surface temperature is an important parameter capable of detecting and quantifying defects in laminated structures if subjected to a thermal load. In this paper, a temperature field reconstruction method is developed to detect the size of debonding defect in laminated structures. A Tikhonov regularization based conjugate gradient method (CGM) is applied to reconstruct the temperature field of a laminated structure for determination of the size of a debonding defect. Tikhonov regularization deals with the severe ill-posedness and the CGM is used for solving the minimization problem. Some simulation examples are carried out to validate the effectiveness and stability of the inverse analysis. Results show that for small defects, the defect detection results based on temperature field reconstruction have higher accuracy than that detected directly by available surface temperature measurement.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2184/1/012050