The effect of corrosion patch geometry on stress intensity factors for external surface cracks in cast iron water mains

Randeniya, C, Robert, D, Fu, G and Li, C 2016, 'The effect of corrosion patch geometry on stress intensity factors for external surface cracks in cast iron water mains', in Nader Ghafoori, Peter Claisse, Eshmaiel Ganjian, Tarun R. Naik (ed.) Proceedings of the 4th International Conference on Sustainable Construction Materials and Technologies (SCMT4), Nevada, United States, 7-11 August 2016, pp. 1673-1680.


Document type: Conference Paper
Collection: Conference Papers

Title The effect of corrosion patch geometry on stress intensity factors for external surface cracks in cast iron water mains
Author(s) Randeniya, C
Robert, D
Fu, G
Li, C
Year 2016
Conference name SCMT4
Conference location Nevada, United States
Conference dates 7-11 August 2016
Proceedings title Proceedings of the 4th International Conference on Sustainable Construction Materials and Technologies (SCMT4)
Editor(s) Nader Ghafoori, Peter Claisse, Eshmaiel Ganjian, Tarun R. Naik
Publisher CreateSpace
Place of publication Seattle, United States
Start page 1673
End page 1680
Total pages 10
Abstract Stress intensity factors play a vital role in predicting the failures of cast iron water mains which are being utilised as buried water mains since several decades in many countries including Australia. The corrosion patterns which can vary from uniform, pitting and/or patch, may result uneven pipe thickness affecting the prediction of stress intensity factors. An inaccurate prediction of stress intensity of the corroded pipes can lead to false judgements by water managers regarding failure predictions, which may result in high economic losses in asset management process. The objective of this paper is to study the effect of external corrosion geometry on stress intensity factors for external surface cracks in cast iron water mains using 3D finite element models. In this study, spherical patch geometry is adopted using a 3D model to characterise externally corroded pipes. Results from the study revealed that external corrosion geometry has a significant effect from on the stress intensity factors for a considered external surface crack. The findings from this study can be used to evaluate the behaviour of stress intensity factor of an external surface crack with variation of corrosion geometry.
Subjects Structural Engineering
Keyword(s) Stress intensity factor
corrosion geometry
surface cracks
3D Finite Element
Copyright notice © 2016 Editors CreateSpace. All rights reserved.
ISBN 9781543112016
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