An empirical equation for failure pressure prediction of high toughness pipeline with interacting corrosion defects subjected to combined loadings based on artificial neural network
Kumar, Suria Devi Vijaya and Karuppanan, Saravanan and Ovinis, Mark (2021) An empirical equation for failure pressure prediction of high toughness pipeline with interacting corrosion defects subjected to combined loadings based on artificial neural network. Mathematics, 9 (20). p. 2582. ISSN 2227-7390
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Abstract
Conventional pipeline corrosion assessment methods for failure pressure prediction do not account for interacting defects subjected to internal pressure and axial compressive stress. In any case, the failure pressure predictions are conservative. As such, numerical methods are required.
This paper proposes an alternative to the computationally expensive numerical methods, specifically an empirical equation based on Finite Element Analysis (FEA). FEA was conducted to generate training data for an ANN after validating the method against full scale burst test results from past research. An ANN with four inputs and one output was developed. The equation was developed based on the weights and biases of an ANN model trained with failure pressure from the FEA of a high toughness pipeline for various defect spacings, defect depths, defect lengths, and axial compressive stresses. The proposed model was validated against actual burst test results for high toughness materials, with a R2 value of 0.99. Extensive parametric study was subsequently conducted to determine the effects of defect spacing, defect length, defect depth, and axial compressive stress on the failure pressure of the pipe. The results of the empirical equation are comparable to the results from numerical methods for the pipes and loadings considered in this study.
| Item Type: | Article | ||||||
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| Identification Number: | https://doi.org/10.3390/math9202582 | ||||||
| Dates: |
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| Uncontrolled Keywords: | interacting defects, artificial neural network, Finite Element Analysis, corrosion assessment method | ||||||
| Subjects: | CAH10 - engineering and technology > CAH10-01 - engineering > CAH10-01-02 - mechanical engineering | ||||||
| Divisions: | Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment > Dept. of Engineering | ||||||
| Depositing User: | Mark Ovinis | ||||||
| Date Deposited: | 27 Jun 2023 15:05 | ||||||
| Last Modified: | 27 Jun 2023 15:05 | ||||||
| URI: | https://www.open-access.bcu.ac.uk/id/eprint/14503 |
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