Experimental and numerical fatigue crack growth of an aluminium pipe repaired by composite patch

Zarrinzadeh, H.; Kabir, Mohammad Zaman; Deylami, A.

doi:10.1016/j.engstruct.2016.12.011

Cited by 46 publications

(21 citation statements)

References 23 publications

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“…It is observed that the FEM results obtained here agree very well with Sanders' interpolated solution, and therefore also the FEM results by Forman et al and XFEM results by Zarrinzadeh et al , both using shell element models. Sanders' long crack solution, given in the handbook, agrees well for long cracks (as intended) but seems to be nonconservative for short cracks, especially for thicker cylinders.…”

Section: Resultssupporting

confidence: 88%

“…In the same paper, Sanders developed an interpolated solution by combining his own analytical solution with that of the shallow shell theory, thereby obtaining a single solution valid for all crack lengths. This interpolated solution has been shown to agree very well with FE results by Forman, Hickman, and Shivakumar and extended finite element method (XFEM) results by Zarrinzadeh, Kabir, and Deylami . Zahoor generated an alternative, conservative version of Sander's interpolated solution, limited to 5 ≤ R m / t ≤ 20, which was included in Zahoor's Ductile Fracture Handbook…”

Section: Introductionmentioning

confidence: 52%

“…This interpolated solution has been shown to agree very well with FE results by Forman, Hickman, and Shivakumar 22 and extended finite element method (XFEM) results by Zarrinzadeh, Kabir, and Deylami. 23 Zahoor 24 generated an alternative, conservative version of Sander's interpolated solution, limited to 5 ≤ R m /t ≤ 20, which was included in Zahoor's Ductile Fracture Handbook. 25 In 2002, Takahashi 10 reviewed various solutions for tensile and bending loading, and recommended an interpolation of FE results by Lacire, Chapuliot, and Marie 26 for general use for R m /t between 1.5 and 100, and crack angles 2θ below 220°.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Stress intensity factors for circumferential through‐wall cracks in thin‐walled cylindrical shells subjected to tension and torsion

Rege

Pavlou

2019

Fatigue Fract Eng Mat Struct

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In order to assess the structural integrity of tubular members or pipes containing circumferential through‐wall cracks, their stress intensity factor solutions are required. While stress intensity factors for tension and bending are available, few solutions exist for the case of torsion, even though these components may also be subjected to torque. In this paper, the finite element method is used to compute the stress intensity factors for this geometry under tension and torsion. Shell elements are employed to compute the results for thin shells by the means of the displacement extrapolation technique. The computed results indicate that the available analytical solution for torsional loading, which is based on shallow shell theory, is nonconservative for long cracks in thin shells. Shallow shell theory is in general not applicable to long cracks, and the present work is therefore able to provide solutions for a wider range of crack lengths than what is currently available.

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 52%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Stress intensity factors for circumferential through‐wall cracks in thin‐walled cylindrical shells subjected to tension and torsion

Rege

Pavlou

2019

Fatigue Fract Eng Mat Struct

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“…In the last decades, laminated composites have been widely applied for repairing the damaged metallic pipes . Many researchers have used laminated composites to repair metallic pipes. For instance, Zarrinzadeh et al investigated the fatigue crack growth in a cracked aluminum pipe repaired by laminated composites.…”

Section: Introductionmentioning

confidence: 99%

“…Many researchers have used laminated composites to repair metallic pipes. For instance, Zarrinzadeh et al investigated the fatigue crack growth in a cracked aluminum pipe repaired by laminated composites. Watanabe Junior et al repaired the corroded circumferential welds using a polymer‐based laminated composites system.…”

Section: Introductionmentioning

confidence: 99%

Repair of inclined notches in the pressurized steel pipes using laminated composites

Doostvandi

Zeinedini

2019

Mat Design Process Comm

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During the drilling process in urban pathways, some buried equipment may be damaged. Metal pipes carrying water, gas, etc are at risk of destruction. The damages may be occurred in the different direction on the pipelines. Thus, the main aim of the research is to investigate the influence of the notch orientation on the leakage pressure of repaired steel pipes. Hence, four through‐the‐thickness notches with certain length cut by a jackhammer were considered. These notches with the angle of 0, 30, 60, and 90° were created relative to the longitudinal axis and through thickness of the pipes. In order to repair the pipes, carbon/epoxy laminated composites system was used. The repaired pipes were examined by hydrostatic test. The results revealed that the maximum leakage pressure was obtained for the pipe with the non‐aligned notch of 90°. Moreover, the minimum leakage pressure was observed for the pipe with the longitudinal notch.

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Design and Experimental Study of Inner Uniform Electromagnetic Probe in Stainless Steel Pipe

Li,

Yuan,

Zhao

et al. 2024

Alternating Current Field Measurement Technique for Detection and Measurement of Cracks in Structures

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Aiming at the deficiencies of the traditional uniform electromagnetic detection probes which is not suitable for the stainless pipe inner detection, a Helmholtz coil-type inner detection probe for stainless steel pipe and its experimental system are proposed and built. Through the finite element software Comsol, the finite element model of the uniform electromagnetic in the axial crack in stainless steel pipe inner detection is established, the distribution and variation law of the electromagnetic field in the pipe are explored, the characteristic signals Bx and Bz are selected, and the influence of the length and depth of the crack on the characteristic signal is analyzed. Based on the results of simulation and the characteristics of the inner detection in the pipe, the Hemholtz coil-type pipe detection probe is designed and a stainless steel pipe inner detection experimental system is built. The experimental results show that the detection system can realize the full circumferential scan of the axial crack on the inner surface of the stainless steel pipe.

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Experimental and numerical fatigue crack growth of an aluminium pipe repaired by composite patch

Cited by 46 publications

References 23 publications

Stress intensity factors for circumferential through‐wall cracks in thin‐walled cylindrical shells subjected to tension and torsion

Stress intensity factors for circumferential through‐wall cracks in thin‐walled cylindrical shells subjected to tension and torsion

Repair of inclined notches in the pressurized steel pipes using laminated composites

Design and Experimental Study of Inner Uniform Electromagnetic Probe in Stainless Steel Pipe

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