Twaddle, Brian Robert
(1991)
A Numerical and Experimental Study of the Development of Semi-Elliptical Fatigue Cracks by Defect Coalescence.
MSc(R) thesis, University of Glasgow.
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Abstract
Fatigue failure of large fabricated structures can occur through the propagation of several small defects which either pre-exist in the structure as a result of the fabrication process or which initiate under the action of cyclic loading. The propagation of these small defects results in the coalescence of several small defects to form a dominant fatigue crack which then propagates to cause failure. In welded components such as the tubular joints of offshore jacket structures the dominant crack is often a semielliptical surface crack at the toe of the fillet weld. Existing methodologies offer simplistic approaches to predict the behaviour of adjacent surface defects. In general fracture mechanics offers a rational approach for the assessment of such problems.
| Item Type: |
Thesis
(MSc(R))
|
| Qualification Level: |
Masters |
| Keywords: |
Mechanical engineering |
| Date of Award: |
1991 |
| Depositing User: |
Enlighten Team
|
| Unique ID: |
glathesis:1991-77284 |
| Copyright: |
Copyright of this thesis is held by the author. |
| Date Deposited: |
14 Jan 2020 09:13 |
| Last Modified: |
14 Jan 2020 09:13 |
| URI: |
http://theses.gla.ac.uk/id/eprint/77284 |
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