Sparse principal component thermography for subsurface defect detection in composite products

Jin Yi Wu, Stefano Sfarra, Yuan Yao

Результат исследований: Материалы для журналаСтатья

22 Цитирования (Scopus)


Active thermography is an efficient and powerful technique for nondestructive testing of products made of composite materials, which enables rapid inspection of large areas, presents results as easily interpreted high-resolution images, and is easy to operate. In recent years, a number of thermographic data analysis methods were developed to enhance the visibility of subsurface defects, among which principal component thermography (PCT) is recommended because of its capability to enhance the contrast between defective and defect-free areas, compress data, and reduce noise. In this study, a sparse principal component thermography (SPCT) method is proposed, which inherits the advantages of PCT and allows more flexibility by introducing a penalization term. Compared to PCT, SPCT provides more interpretable analysis results owing to its structure sparsity. The feasibility and effectiveness of the proposed method are illustrated by the experimental results of the subsurface defect characterization in a carbon fiber reinforced plastic specimen.

Язык оригиналаАнглийский
Номер статьи8320318
Страницы (с-по)5594-5600
Число страниц7
ЖурналIEEE Transactions on Industrial Informatics
Номер выпуска12
СостояниеОпубликовано - 1 дек 2018

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Information Systems
  • Computer Science Applications
  • Electrical and Electronic Engineering

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