Recent development in low-constraint fracture toughness testing for structural integrity assessment of pipelines

Kang, Jidong; Gianetto, J. A.; Tyson, W. R.

doi:10.1007/s11465-018-0501-2

Front. Mech. Eng.

2018

DOI: 10.1007/s11465-018-0501-2

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Recent development in low-constraint fracture toughness testing for structural integrity assessment of pipelines

Jidong Kang¹,

J. A. Gianetto²,

W. R. Tyson³

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Cited by 9 publications

References 9 publications

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On the Origin of Extrinsic Size Effects on the Fracture Resistance of Thin ETP Copper Sheets

Prasad,

Awale,

Sahasrabuddhe

et al. 2024

Adv Eng Mater

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Size effects are well known to influence the mechanical behavior of materials and impact the structural integrity and reliability of devices such as thin films, coatings, foils, and sheet metals. There is little literature on extrinsic (specimen size) effects on fracture resistance of thin polycrystalline sheets while keeping the internal parameters constant. Herein, we determine the impact of specimen thickness on the fracture behavior of electrolytic tough pitch (ETP grade) Cu sheets, under two different grain sizes and initial dislocation densities. Elastic–plastic fracture mechanics (EPFM) combined with digital image correlation‐based full‐field strain mapping has been utilized to determine both the fracture resistance and plastic zone evolution as a function of specimen thickness. A smaller is weaker trend has been observed in both conditions. The specimen thickness effect is quantified in terms of a size exponent and is related to the truncation of the process zone ahead of growing crack, leading to reduced fracture resistance. The effect of intrinsic microstructural parameters such as grain size and dislocation density on the strain hardening ability, tensile elongation to fracture, and fracture toughness is also quantified and the plastic strain is found to correlate with fracture toughness.

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On the Origin of Extrinsic Size Effects on the Fracture Resistance of Thin ETP Copper Sheets

Prasad,

Awale,

Sahasrabuddhe

et al. 2024

Adv Eng Mater

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A low constraint center cracked Brazilian disk specimen for ductile FCC single crystal

Deka

Jonnalagadda

2021

Int J Fract

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Influence of weld porosity on crack size estimations in Single Edge Notched Tension (SENT) testing of steels: A numerical study

Adriano

Depraetere

Waele

2021

Engineering Fracture Mechanics

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Recent development in low-constraint fracture toughness testing for structural integrity assessment of pipelines

Cited by 9 publications

References 9 publications

On the Origin of Extrinsic Size Effects on the Fracture Resistance of Thin ETP Copper Sheets

On the Origin of Extrinsic Size Effects on the Fracture Resistance of Thin ETP Copper Sheets

A low constraint center cracked Brazilian disk specimen for ductile FCC single crystal

Influence of weld porosity on crack size estimations in Single Edge Notched Tension (SENT) testing of steels: A numerical study

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