X-ray tomographic imaging of Ti/SiC composites
| Autor: | Sa Mcdonald, Eric Maire, Michael Preuss, P.J. Withers, Jean-Yves Buffiere, P.M. Mummery |
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| Přispěvatelé: | Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), MAIRE, Eric |
| Rok vydání: | 2003 |
| Předmět: |
Crack plane
Histology Materials science Surface Properties Carbon Compounds Inorganic Composite number 02 engineering and technology [SPI.MAT] Engineering Sciences [physics]/Materials Composite Resins 01 natural sciences [SPI.MAT]Engineering Sciences [physics]/Materials Pathology and Forensic Medicine law.invention law Materials Testing 0103 physical sciences Alloys Composite material ComputingMilieux_MISCELLANEOUS Titanium 010302 applied physics Tomographic reconstruction Silicon Compounds X-ray Fatigue testing 021001 nanoscience & nanotechnology Synchrotron Tomography Tomography X-Ray Computed 0210 nano-technology Laser drilling |
| Zdroj: | Journal of Microscopy Journal of Microscopy, Wiley, 2003, 209 (2), pp.102--112 |
| ISSN: | 1365-2818 0022-2720 |
| DOI: | 10.1046/j.1365-2818.2003.01105.x |
| Popis: | In this paper, high-resolution tomographic synchrotron X-ray imaging is applied to study the occurrence and evolution of damage in Ti-6Al-4V/SCS6 SiC fibre composite materials. Three composite morphologies of increasing complexity have been studied, namely single fibre, single-ply and multi-ply composites. The single fibre composite was strained to full fibre fragmentation and the progressive introduction of damage monitored. For the single-ply composite, damage was introduced deliberately by laser drilling to establish the effect of damaged fibres on their neighbours, whereas for the multi-ply composite the morphology of a fibre bridging fatigue crack was studied. In addition to traditional mode I fibre fractures, subsequent fibre wedge cracks were observed presumably nucleating from damage introduced into the fibre surface by the first fracture event. In addition to these crack morphologies, spiral defects were observed for the single ply during failure. Finally, for the multi-ply composite, the matrix crack front showed a number of characteristic features, including advancement in fibre-free regions, crack bifurcation near fibres and different crack plane heights either side of a fibre. |
| Databáze: | OpenAIRE |
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