Material pre-straining effects on fracture toughness variation in offshore wind turbine foundations

Anandavijayan, Satya; Mehmanparast, Ali; Chahardehi, Amir

doi:10.1016/j.engfracmech.2021.107844

Cited by 4 publications

(4 citation statements)

References 31 publications

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“…The out-plane constraint parameter T z , also known as stress triaxial constraint, is introduced by Guo [41] to analyze the three dimensional out-plane constraint effect. The stress triaxial constraint T z is a dimensionless parameter and its expression is [41] T z = σ 33 σ 11 + σ 22 (10) where σ 11 , σ 22 and σ 33 are the normal stresses along x, y and z directions, respectively. When comparing the stress triaxial constraints T z of different specimens, it should also be carried out when the J-integral average value J ave is equal, where J ave = 99 kJ/m 2 .…”

Section: Stress Triaxial Constraint Distribution Of Specimensmentioning

confidence: 99%

“…Through the simulation results, the values of σ 11 , σ 22 and σ 33 in the thickness direction of the specimens with and without side grooves can be found out when J ave = 99 kJ/m 2 . Then the stress triaxial constraint T z in the thickness direction of the specimen can be obtained by substituting the stresses σ 11 , σ 22 and σ 33 into Equation (10), as shown in Figure 13. The influence of the side grooves on the triaxial stress constraint Tz along the thickness direction of the specimen are shown in Figure 13.…”

Section: Stress Triaxial Constraint Distribution Of Specimensmentioning

confidence: 99%

“…Xiao et al [28] studied the effect of pre-strain on low temperature fracture toughness of pipeline steel and conducted a tensile experiment and fracture toughness test on X80 pipeline steel raw material and plastic deformation material at different temperatures. The experiment results showed that the yield strength and tensile strength of pipeline steel could be improved by tensile pre-strain, but reduced by compressive pre-strain [10].…”

Section: Introductionmentioning

confidence: 96%

“…Many investigations have been conducted to study in depth the fracture toughness of various grades of pipeline steels, including the influence of hydrogen, long term ageing, temperature, thickness, pre-strain and so on [6][7][8][9][10][11][12][13][14]. The static and dynamic fracture behavior of pipeline steel was analyzed by Luna et al [15] using Charpy low impact testing and conventional static fracture testing.…”

Section: Introductionmentioning

confidence: 99%

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Stress Triaxial Constraint and Fracture Toughness Properties of X90 Pipeline Steel

Wang

Hao²,

Xie³

et al. 2022

Metals

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The X90 pipeline steel with high-strength and high-toughness become the most popular pipeline steel. Due to the stress triaxial constraint and fracture toughness properties are the key factors for the stable work of pipeline steel, the research on the fracture toughness of X90 is a great significance to promote the engineering application of high-strength pipeline steel. In order to investigate the stress triaxial constraint and fracture toughness properties of X90 pipeline steel, the experimental rules with different grooves size are proposed using the common toughness experiment and the corresponding numerical models are established in this paper. The resistance curves and fracture toughness of each type of specimens are obtained and compared with that of finite element analysis. Furthermore, the stress distribution, J-integral distribution and stress triaxial constraint of the specimen are analyzed, as well as the influence of side grooves size on the determination of fracture toughness is also discussed. The results obtained from the study will provide a reference to the fracture toughness evaluation research and application of X90 pipeline steel.

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Section: Stress Triaxial Constraint Distribution Of Specimensmentioning

confidence: 99%

Section: Stress Triaxial Constraint Distribution Of Specimensmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Stress Triaxial Constraint and Fracture Toughness Properties of X90 Pipeline Steel

Wang

Hao²,

Xie³

et al. 2022

Metals

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Effects of in-service strain on girth weld failure of an X80 pipeline

Hongyuan,

Xiongxiong,

Dongliang

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

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In general, transmission pipelines are designed by hoop stress induced by internal pressure, and maximum longitudinal stress. The paper is mainly about the failure analysis of an X80 pipeline brittle fracture on girth weld under in-service strain. The digital image correlation (DIC) in the tensile tests was used to analyze the permanent plastic strain on girth weld metal under in-service strain. Then, the Charpy energy of the girth weld metal with the concentrated plastic strain was tested to evaluate the deterioration of toughness. Finally, the mechanism of the brittle fracture of the girth weld is clari ed. The results show that the girth welds may have obvious plastic deformation under an elastic in-service strain of the pipeline. It may lead to a signi cant deterioration of the toughness, which results in the failure of the pipeline under the strain-controlled load.

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Effects of extruded endogenous starch on the gel-entrapped network formation in gluten-free Tartary buckwheat noodles during sheeting

Han

Xing

Guo

et al. 2022

LWT

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Material pre-straining effects on fracture toughness variation in offshore wind turbine foundations

Cited by 4 publications

References 31 publications

Stress Triaxial Constraint and Fracture Toughness Properties of X90 Pipeline Steel

Stress Triaxial Constraint and Fracture Toughness Properties of X90 Pipeline Steel

Effects of in-service strain on girth weld failure of an X80 pipeline

Effects of extruded endogenous starch on the gel-entrapped network formation in gluten-free Tartary buckwheat noodles during sheeting

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