| Autor: |
Shirsha Bose, Simin Li, Elisa Mele, Vadim V. Silberschmidt |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Acta Biomaterialia. 142:174-184 |
| ISSN: |
1742-7061 |
| DOI: |
10.1016/j.actbio.2022.02.001 |
| Popis: |
The growing interest to the use of collagen films for biomedical applications motivates the analysis of their fracture behaviour in different environments. Studies revealed the decreased mechanical strength and stiffness as well as increased plasticity in water compared to collagen specimens tested in air. However, the fracture behaviour of pure collagen films in both air and water has not been reported so far. In this paper, the entire process of mode-I loading of single-edge notched tension (SENT) specimens was recorded and analysed. In case of in-air (dry) specimens, cracks propagated rapidly in a brittle fashion while large plastic deformations were observed in aqua prior to failure due to crack opening and a blunting mechanism in wet specimens. The fracture-toughness parameters for pure collagen in air and in aqua were estimated using linear-elastic (K |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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