| Title: | The re-characterisation of complex defects |
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| Authors: | ID Bezenšek, Boštjan (Author)
ID Hancock, John. W. (Author) |
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| Files: |  http://dx.doi.org/10.1016/S0013-7944(03)00155-3
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FS - Faculty of Mechanical Engineering
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| Abstract: | Defect assessment codes idealise complex defects as simple shapes which are amenable to analysis in a process known as re-characterisation. The present work examines the re-characterisation of complex defects which extend by fatigue, ductile tearing or cleavage. A family of representative defects were analysed numerically, while a related experimental programme investigated defect interaction and failure. Part I of the paper focuses on fatigue and ductile tearing. Part II examines cleavage. The numerical and experimental results are discussed within the context of the re-characterisation proceduresdescribed in BS 7910 (Guidance on methods for assessing the acceptability of flaws in metallic structures. London, UK: British Standard Institution; 1999 [Chapter 7] and R6/4 (Assessment of the integrity of structures containing defects. Gloucester: British Energy Generation Ltd.; 2001 [Revision 4, Chapters I and II.3]). The level of conservatism of the re-characterisation prpcedures for fatigue and ductile tearing are discussed. A possible non-conservatism of the re-characterisation for cleavage is discussed in Part II, within the framework of constraint based statistical fracture mechanics. |
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| Keywords: | fracture mechanics, structural elements, complex defects, recharacterisation, line-spring analysis, fatigue, ductile tearing, cracks, numerical analysis |
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| Year of publishing: | 2004 |
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| PID: | 20.500.12556/DKUM-27496  |
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| UDC: | 539.42:519.51/.64 |
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| ISSN on article: | 0013-7944 |
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| COBISS.SI-ID: | 8460822 |
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| NUK URN: | URN:SI:UM:DK:KT86IEP6 |
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| Publication date in DKUM: | 01.06.2012 |
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| Views: | 1741 |
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| Downloads: | 107 |
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| Metadata: |    |
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| Categories: | Misc.
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