Evaluating thermal properties of sugarcane bagasse-based composites by using active infrared thermography and terahertz imaging

A. O. Chulkov, S. Sfarra, H. Zhang, A. Osman, K. Szielasko, C. Stumm, F. Sarasini, J. Fiorelli, X. P.V. Maldague, V. P. Vavilov

Research output: Contribution to journalArticle

Abstract

This study is devoted to the analysis of impact damage in composite samples by applying techniques of IR and Terahertz imaging. The samples made of high-density homogeneous particleboards of sugarcane bagasse and castor oil polyurethane resin were subjected to impacts with the energy from 5 to 30 J. The impact damage defects were evaluated by applying one- and two-sided thermal non-destructive testing. Both the apparent thermal effusivity and diffusivity were determined to analyse their relationship to impact energy. In the above-mentioned range of impact energies, the thermal effusivity varied from 5 to 18%, while the variations in thermal diffusivity were from 4 to 24%. The algorithm of dynamic thermal tomography was used to demonstrate that predominant subsurface cracking occurred at depths up to 1 mm. In addition, the defect areas were tested by applying the Terahertz technique, whose results qualitatively matched the IR thermographic ones to show that the damaged areas were larger than they appeared visually. However, both inspection techniques have revealed no significant dependence of analysed parameters on impact energy. This is believed to prove that non-uniform composite structure is the decisive factor in producing structural defects under impacting.

Original languageEnglish
Pages (from-to)432-439
Number of pages8
JournalInfrared Physics and Technology
Volume97
DOIs
Publication statusPublished - 1 Mar 2019

Fingerprint

Bagasse
Thermodynamic properties
thermodynamic properties
impact damage
Imaging techniques
composite materials
Composite materials
Defects
defects
polyurethane resins
castor oil
Castor Oil
energy
Thermal diffusivity
composite structures
thermal diffusivity
Composite structures
Nondestructive examination
Polyurethanes
diffusivity

Keywords

  • Dynamic thermal tomography
  • Impact
  • Infrared thermography
  • Sugarcane bagasse
  • Terahertz inspection
  • Thermal parameters

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

Cite this

Evaluating thermal properties of sugarcane bagasse-based composites by using active infrared thermography and terahertz imaging. / Chulkov, A. O.; Sfarra, S.; Zhang, H.; Osman, A.; Szielasko, K.; Stumm, C.; Sarasini, F.; Fiorelli, J.; Maldague, X. P.V.; Vavilov, V. P.

In: Infrared Physics and Technology, Vol. 97, 01.03.2019, p. 432-439.

Research output: Contribution to journalArticle

Chulkov, A. O. ; Sfarra, S. ; Zhang, H. ; Osman, A. ; Szielasko, K. ; Stumm, C. ; Sarasini, F. ; Fiorelli, J. ; Maldague, X. P.V. ; Vavilov, V. P. / Evaluating thermal properties of sugarcane bagasse-based composites by using active infrared thermography and terahertz imaging. In: Infrared Physics and Technology. 2019 ; Vol. 97. pp. 432-439.
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