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An investigation on the circumferential surface crack growth in steel pipes subjected to fatigue bending. / Li, Zongchen; Jiang, Xiaoli; Hopman, Hans; Zhu, Ling; Liu, Zhiping.

In: Theoretical and Applied Fracture Mechanics, Vol. 105, 102403, 2020.

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@article{d3b83832c1c84f6689d917749cdde17a,
title = "An investigation on the circumferential surface crack growth in steel pipes subjected to fatigue bending",
abstract = "In the present paper, we propose an analytical method to calculate the Stress Intensity Factor (SIF) of circumferential surface cracks in steel pipes subjected to bending. In light of pipe geometry and bending load case, the analytical formula is raised by introducing new bending correction factors and new geometry correction factors on the basis of the Newman-Raju’s method. The bending correction factors are deduced based on the bending stress gradient, while the geometry correction factors are determined by parametric studies for internal surface cracks and external surface cracks respectively. Owing to a large data set requirement by the parametric studies, three-dimensional finite element (FE) models of evaluating SIFs of circumferential surface cracks are developed. The FE method is validated to ensure that it could provide accurate SIF estimations. Analytical verification is conducted which shows that the SIF evaluated by the proposed analytical method match well with the results evaluated by the recommended analytical method. Then experimental investigations of external surface crack growth in offshore steel pipe subjected to fatigue bending are implemented to further validate the analytical method of predicting surface crack growth rate. The analytical results match well with the test results and the available experimental data from literature, indicating that the analytical method can be used for practical purposes and facilitate the crack growth evaluation and residual fatigue life prediction of cracked steel pipes. Previous article in issue",
keywords = "Steel pipes, Circumferential surface crack, Surface crack growth rate, Analytical method, Structural integrity",
author = "Zongchen Li and Xiaoli Jiang and Hans Hopman and Ling Zhu and Zhiping Liu",
year = "2020",
doi = "10.1016/j.tafmec.2019.102403",
language = "English",
volume = "105",
journal = "Theoretical and Applied Fracture Mechanics",
issn = "0167-8442",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - An investigation on the circumferential surface crack growth in steel pipes subjected to fatigue bending

AU - Li, Zongchen

AU - Jiang, Xiaoli

AU - Hopman, Hans

AU - Zhu, Ling

AU - Liu, Zhiping

PY - 2020

Y1 - 2020

N2 - In the present paper, we propose an analytical method to calculate the Stress Intensity Factor (SIF) of circumferential surface cracks in steel pipes subjected to bending. In light of pipe geometry and bending load case, the analytical formula is raised by introducing new bending correction factors and new geometry correction factors on the basis of the Newman-Raju’s method. The bending correction factors are deduced based on the bending stress gradient, while the geometry correction factors are determined by parametric studies for internal surface cracks and external surface cracks respectively. Owing to a large data set requirement by the parametric studies, three-dimensional finite element (FE) models of evaluating SIFs of circumferential surface cracks are developed. The FE method is validated to ensure that it could provide accurate SIF estimations. Analytical verification is conducted which shows that the SIF evaluated by the proposed analytical method match well with the results evaluated by the recommended analytical method. Then experimental investigations of external surface crack growth in offshore steel pipe subjected to fatigue bending are implemented to further validate the analytical method of predicting surface crack growth rate. The analytical results match well with the test results and the available experimental data from literature, indicating that the analytical method can be used for practical purposes and facilitate the crack growth evaluation and residual fatigue life prediction of cracked steel pipes. Previous article in issue

AB - In the present paper, we propose an analytical method to calculate the Stress Intensity Factor (SIF) of circumferential surface cracks in steel pipes subjected to bending. In light of pipe geometry and bending load case, the analytical formula is raised by introducing new bending correction factors and new geometry correction factors on the basis of the Newman-Raju’s method. The bending correction factors are deduced based on the bending stress gradient, while the geometry correction factors are determined by parametric studies for internal surface cracks and external surface cracks respectively. Owing to a large data set requirement by the parametric studies, three-dimensional finite element (FE) models of evaluating SIFs of circumferential surface cracks are developed. The FE method is validated to ensure that it could provide accurate SIF estimations. Analytical verification is conducted which shows that the SIF evaluated by the proposed analytical method match well with the results evaluated by the recommended analytical method. Then experimental investigations of external surface crack growth in offshore steel pipe subjected to fatigue bending are implemented to further validate the analytical method of predicting surface crack growth rate. The analytical results match well with the test results and the available experimental data from literature, indicating that the analytical method can be used for practical purposes and facilitate the crack growth evaluation and residual fatigue life prediction of cracked steel pipes. Previous article in issue

KW - Steel pipes

KW - Circumferential surface crack

KW - Surface crack growth rate

KW - Analytical method

KW - Structural integrity

UR - http://www.scopus.com/inward/record.url?scp=85074639179&partnerID=8YFLogxK

U2 - 10.1016/j.tafmec.2019.102403

DO - 10.1016/j.tafmec.2019.102403

M3 - Article

VL - 105

JO - Theoretical and Applied Fracture Mechanics

T2 - Theoretical and Applied Fracture Mechanics

JF - Theoretical and Applied Fracture Mechanics

SN - 0167-8442

M1 - 102403

ER -

ID: 67925186