Quantitative comparison between reflection and transmission modes for the inspection of composite materials using pulsed thermography

Alhammad M., Avdelidis N., Ibarra-Castanedo C., Torbali M. E., Zolotas A., Maldague X.

Thermosense: Thermal Infrared Applications XLV 2023, Florida, Amerika Birleşik Devletleri, 2 - 04 Mayıs 2023, cilt.12536, (Tam Metin Bildiri) identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 12536
  • Doi Numarası: 10.1117/12.2665274
  • Basıldığı Şehir: Florida
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Anahtar Kelimeler: aerospace, CFRP, NDT, Pulse thermography, reflection mode, thermography, transmission mode
  • Bursa Uludağ Üniversitesi Adresli: Hayır

Özet

Composite materials have extensively been used in the aerospace industry. There are several inspection methods to ensure the safety of these composites; pulse thermography (PT) is one of the most promising ones. Both reflection and transmission modes of PT could be applied. However, few studies reveal the advantages and disadvantages of these two modes. This paper presents a quantitative comparison of pulsed thermal imaging in two modes of reflection and gradual heat transfer in carbon fibres. Experimental work was conducted on carbon fibre-reinforced plastic (CFRP) samples with different thicknesses and thermal images were recorded in both modes. Thermal images were further processed using statistical analysis and machine learning algorithms. Comparing the results from both modes, there is a marked improvement in the accuracy when the reflection mode is employed.