基于涡流成像的碳纤维增强树脂基复合材料细观结构可视化

Translated title of the contribution: Visualization of meso-structure of carbon fiber reinforced polymer based on eddy current imaging

Jun Cheng, Jiquan Yang, Jinhao Qiu, Hongli Ji, Toshiyuki Takagi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The imaging of meso-structures within carbon fiber reinforced polymer (CFRP) composites was studied. The visualization of fiber orientations and defects such as missing bundles, wrinkle and gaps in CFRP laminates were realized by using eddy current imaging technique. Firstly, the mechanism and distribution of eddy currents in CFRP plates were analyzed by finite element simulation and circuit theory. The imaging mechanism of CFRP meso-structure based on eddy current method was also described. Then the high frequency eddy current testing (HF-ECT) experimental system for scanning imaging was introduced, and the form and parameters of the eddy current probe were determined. Finally, the eddy current imaging technique was used to detect the unidirectional plate, the orthogonal laminate plate and the four-directional angle-ply laminate plate. The three-dimensional pseudo-color images of the eddy current testing(ECT) signals were plotted and clear fiber textures were obtained. The images were further processed by introducing the filter denoising technique and the two-dimensional fast Fourier transform (2D-FFT) to improve the image resolution and complete the separation of the textures in different directions, so as to realize the accurate positioning of the defects in the unidirectional layer of the laminates.

Translated title of the contributionVisualization of meso-structure of carbon fiber reinforced polymer based on eddy current imaging
Original languageChinese
Pages (from-to)2074-2083
Number of pages10
JournalFuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
Volume35
Issue number8
DOIs
Publication statusPublished - 2018 Aug 1

Keywords

  • Carbon fiber reinforced polymer(CFRP)
  • Eddy current imaging
  • Nondestructive testing
  • Texture analysis
  • Two-dimensional fast Fourier transform (2D-FFT)

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Mechanics of Materials

Fingerprint Dive into the research topics of 'Visualization of meso-structure of carbon fiber reinforced polymer based on eddy current imaging'. Together they form a unique fingerprint.

Cite this