Damage assessment of channel section columns subjected to uniform compression
| Autor: | Jaroslaw Bienias, Tomasz Kubiak, Adrian Gliszczynski, Patryk Jakubczak |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Phased array Delamination 02 engineering and technology Fibre-reinforced plastic 021001 nanoscience & nanotechnology Compression (physics) Matrix (mathematics) Cracking 020303 mechanical engineering & transports 0203 mechanical engineering Ceramics and Composites Ultrasonic sensor Fiber Composite material 0210 nano-technology Civil and Structural Engineering |
| Zdroj: | Composite Structures. 202:500-510 |
| ISSN: | 0263-8223 |
| Popis: | The paper presents the failure analysis of compressed channel section profile made of GFRP material. Three symmetrical arrangements of layers were considered: [90/0/90/0]s, [90/-45/45/0]s, [45/-45/90/0]s. In order to characterize the failure process, visual inspection, ultrasonic phased array , non-destructive testing and computer microtomography were used. Damage analysis based on studies of external and internal damage of investigated structure allowed for identification of characteristic failure modes and mechanisms. It was shown that the dominant form of destruction in the quasi-orthotropic system are matrix cracks coupled with the presence of extensive delamination while in quasi-isotropic systems more concentrated damage was noticed, in which the cracking/rapture of fibers localized in the column’s corners determined the initiation of the failure mechanism and the carrying capacity loss. In addition, it was noted that the fiber directions of the outer layers determined the directions of matrix cracks and delamination propagation. |
| Databáze: | OpenAIRE |
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