Fracture and fatigue behavior of Bambusa Vulgaris-Schrad Bamboo
| Autor: | O. K. Oyewole, John D. Obayemi, Nneka B. Ekwe, Ruben Mercadé-Prieto, Nima Rahbar, Winston O. Soboyejo, Emmanuel Ogo Onche |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
crack arrestor
0209 industrial biotechnology Bamboo Materials science General Computer Science 020209 energy General Chemical Engineering Bambusa 02 engineering and technology Bambusa vulgaris interfacial cracks 020901 industrial engineering & automation mental disorders 0202 electrical engineering electronic engineering information engineering Crack divider Composite material biology General Engineering crack divider Engineering (General). Civil engineering (General) biology.organism_classification fracture double-notch specimens Crack initiation Fracture (geology) fatigue TA1-2040 |
| Zdroj: | Cogent Engineering, Vol 8, Iss 1 (2021) |
| ISSN: | 2331-1916 |
| DOI: | 10.1080/23311916.2021.1914289 |
| Popis: | This paper presents the results of an experimental study of the fatigue and fracture behavior of Bambusa Vulgaris-Schrad bamboo. Mechanisms of crack initiation and growth are elucidated under monotonic and cyclic compressive failure or flexural loading. The microscopic studies of fatigue and fracture explore the effects of fiber/crack/ply orientation on crack growth and toughening mechanisms in single-edge notched and double -edge notched fracture mechanics bend specimens, which are studied in the “crack-arrestor” and “crack-divider” orientations. The compressive fatigue behavior of Bambusa Vulgaris-Schrad bamboo is also investigated in smooth un-notched specimens. The resulting stress-life behavior is shown to occur in a regime in which the maximum stresses exceed the critical conditions for the onset of progressive fiber buckling and shear band formation. This results ultimately in the nucleation and propagation of interlaminar cracks and shear cracks across the Bambusa Vulgaris-Schrad structures. The implications of the results are discussed for the design of robust bamboo structures. |
| Databáze: | OpenAIRE |
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