Print Email Facebook Twitter Near-infrared optical coherence tomography for the inspection of fiber composites Title Near-infrared optical coherence tomography for the inspection of fiber composites Author Liu, P. Yao, L. Groves, R.M. Faculty Aerospace Engineering Department Aerospace Structures and Materials Date 2015-12-31 Abstract Optical coherence tomography (OCT) is a non-invasive imaging method, which allows the econstruction of three dimensional depth-resolved images with microscale resolution. Originally developed for biomedical diagnostics, nowadays it also shows a high potential for applications in the field of non-destructive testing (NDT). This work demonstrates how OCT could help to investigate the delamination growth in fiber composites. A customized OCT system was built with a near-infrared light source with center wavelength at 1550 nm. It was used as an inline NDT tool to monitor the crack tips and image the crack surfaces within a glass fiber composite under static loading. For carbon fiber composites, although it is difficult to acquire the internal structures due to their opaque property, OCT can still work as a surface profilometer to reconstruct 3D crack surface profiles, providing substantial information for the study of crack growth in the composites. To reference this document use: http://resolver.tudelft.nl/uuid:43151407-c489-4c91-83bb-20a64cba0e53 Publisher DGZfP Source Proceedings of the 7th International Symposium on NDT in Aerospace, Bremen, Germany, November 16-18,2015 Part of collection Institutional Repository Document type conference paper Rights (c) 2015 The AuthorsCC-BY-ND Files PDF 329554.pdf 497.5 KB Close viewer /islandora/object/uuid:43151407-c489-4c91-83bb-20a64cba0e53/datastream/OBJ/view