T-STRESS SOLUTIONS FOR CRACKS IN STRAIGHT PIPES

Kiranmayi Abburi Venkata; Marius Gintalas; Robert Ainsworth

T-STRESS SOLUTIONS FOR CRACKS IN STRAIGHT PIPES

Kiranmayi Abburi Venkata, Marius Gintalas, Robert Ainsworth

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

Abstract

The increasing use of constraint arguments for defect assessments of large-scale components such as pipes requires estimates of suitable parameters to characterise crack tip constraint. The simplest such parameter is the elastic T-stress. However, for pipes, such solutions are not readily available. Therefore,
this paper reports the results of an extensive series of finite element calculations to provide normalised T-stress solutions for pipes for a range of geometry and crack sizes. Comparisons with the limited solutions in the literature are used to give confidence in the numerical solutions obtained, which are shown to be sensitive to mesh refinement. The results are provided in a form that is suitable for use in practical defect assessments such as the constraint modified failure assessment diagram approach.

Original language	English
Title of host publication	T-STRESS SOLUTIONS FOR CRACKS IN STRAIGHT PIPES
Publication status	Published - 2015

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title = "T-STRESS SOLUTIONS FOR CRACKS IN STRAIGHT PIPES",

abstract = "The increasing use of constraint arguments for defect assessments of large-scale components such as pipes requires estimates of suitable parameters to characterise crack tip constraint. The simplest such parameter is the elastic T-stress. However, for pipes, such solutions are not readily available. Therefore,this paper reports the results of an extensive series of finite element calculations to provide normalised T-stress solutions for pipes for a range of geometry and crack sizes. Comparisons with the limited solutions in the literature are used to give confidence in the numerical solutions obtained, which are shown to be sensitive to mesh refinement. The results are provided in a form that is suitable for use in practical defect assessments such as the constraint modified failure assessment diagram approach.",

author = "{Abburi Venkata}, Kiranmayi and Marius Gintalas and Robert Ainsworth",

year = "2015",

language = "English",

booktitle = "T-STRESS SOLUTIONS FOR CRACKS IN STRAIGHT PIPES",

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AU - Abburi Venkata, Kiranmayi

AU - Gintalas, Marius

AU - Ainsworth, Robert

PY - 2015

Y1 - 2015

N2 - The increasing use of constraint arguments for defect assessments of large-scale components such as pipes requires estimates of suitable parameters to characterise crack tip constraint. The simplest such parameter is the elastic T-stress. However, for pipes, such solutions are not readily available. Therefore,this paper reports the results of an extensive series of finite element calculations to provide normalised T-stress solutions for pipes for a range of geometry and crack sizes. Comparisons with the limited solutions in the literature are used to give confidence in the numerical solutions obtained, which are shown to be sensitive to mesh refinement. The results are provided in a form that is suitable for use in practical defect assessments such as the constraint modified failure assessment diagram approach.

AB - The increasing use of constraint arguments for defect assessments of large-scale components such as pipes requires estimates of suitable parameters to characterise crack tip constraint. The simplest such parameter is the elastic T-stress. However, for pipes, such solutions are not readily available. Therefore,this paper reports the results of an extensive series of finite element calculations to provide normalised T-stress solutions for pipes for a range of geometry and crack sizes. Comparisons with the limited solutions in the literature are used to give confidence in the numerical solutions obtained, which are shown to be sensitive to mesh refinement. The results are provided in a form that is suitable for use in practical defect assessments such as the constraint modified failure assessment diagram approach.

M3 - Conference Contribution (Conference Proceeding)

BT - T-STRESS SOLUTIONS FOR CRACKS IN STRAIGHT PIPES

ER -