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Infrared and Terahertz time-domain imaging for evaluation of impacted thick homogeneous particleboards of sugarcane bagasse

: Zhang, Hai; Sfarra, Stefano; Osman, Ahmad; Szielasko, Klaus; Stumm, Christopher; Sarasini, Fabrizio; Maldague, Xavier P.V.

Maierhofer, Christiane (Hrsg.) ; Deutsche Gesellschaft für Zerstörungsfreie Prüfung e.V. -DGZfP-, Berlin:
14th Quantitative InfraRed Thermography Conference, QIRT 2018 : Berlin, 25-29 June 2018
Berlin: DGZfP, 2018 (DGZfP-Berichtsbände 167)
ISBN: 978-3-940283-94-8
Paper Tu.5.B.3
Quantitative InfraRed Thermography Conference (QIRT) <14, 2018, Berlin>
Conference Paper
Fraunhofer IZFP ()
infrared thermography (IRT); terahertz time-domain imaging (THz-TDI); sugarcane bagasse (SCB)

In this paper, both infrared thermography (IRT) and terahertz time-domain imaging (THz-TDI) were used to evaluate impacted homogeneous particleboards of sugarcane bagasse (SCB), which have the thickness of 2 cm. In this study, the THz data were processed by applying the well-known image processing algorithms used in IRT. The comparative results show that IRT can provide some finer details in the detection of shallow thermal imprints; however, it is difficult to reveal deeper (typically ~1 cm) information. On the contrary, THz-TDI may explore the entire thickness of the samples, although - for this specific study - its resolution is lower. In addition, THz-TDI has the advantage to detect resin-rich and fibre-rich regions.