| Autor: |
Zhang Hua, Zhang Hong, Zhao Xinwei, Wang Yalong, Li Na |
| Jazyk: |
English<br />French |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
MATEC Web of Conferences, Vol 67, p 03016 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
2261-236X |
| DOI: |
10.1051/matecconf/20166703016 |
| Popis: |
The critical fracture toughness decreases when thickness of specimens increases and stress-strain field in crack tip start changing to plane strain state from plane stress state. In this paper, fracture toughness tests were carried. Based on the analysis of stress-strain field in crack tip and fracture toughness test results, a fracture toughness-thickness empirical model was established and the plane strain fracture toughness and critical thickness of X80/X100 were calculated. Then the validity of the empirical model was discussed and verified. The analytical results indicate that the safety of thick wall pipelines is worth of attention. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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