A spectral fatigue method incorporating non-proportional multiaxial loading

Ravi, Sandipp Krishnan; Dong, Ping

doi:10.1016/j.ijfatigue.2019.105300

Cited by 12 publications

(4 citation statements)

References 10 publications

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“…In [62,79] it was concluded that the mesh insensitive traction-based structural stress definition is efficient for describing the relevant stress state responsible for each of the fatigue failure modes. The same approach was successfully extended through a formulation of an effective equivalent structural stress transfer function in order to incorporate multiaxial non-proportional loading conditions, for the assessment of marine structures exposed to time-varying loads, in [81]. Furthermore, for fillet-welded specimens, based on typical shipbuilding practices, the weld penetration effects on the fillet weld load carrying capacity were investigated in Dong's approach of the equivalent structural stress was successfully applied to the orthotropic steel deck (OSD) [63,79], widely applied in shipbuilding [80].…”

Section: Structural Approachesmentioning

confidence: 99%

Section: Structural Approachesmentioning

confidence: 99%

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Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Corigliano

Crupi²

2022

Metals

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Welded joints are widely used in many sectors and represent the main joining technique also in the marine industry. The welded joints are sites of high stress concentrations and are subject to severe conditions for the marine environment. The design of marine welded joints has to consider the effects from wave loads, ship motions and loading/unloading operations and corrosion effects. The aim of this scientific work is to discuss about the state of the art of the standards and the approaches for predicting the fatigue life of welded joints used for the marine industry. Several approaches are examined in order to provide an overview and highlight the advantages and limitations of each method. Furthermore, recent advances in welding of dissimilar metals and autonomous welding are considered.

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Section: Structural Approachesmentioning

confidence: 99%

Section: Structural Approachesmentioning

confidence: 99%

Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Corigliano

Crupi²

2022

Metals

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“…The predictive capabilities of trained AI\ML models are extensively used to evaluate properties of new material system and structures, getting insights on response surfaces [33]. One prominent example of the same is given for multi-axial fatigue analysis [34][35][36][37][38]. Though several strides have been made in applying ML framework in the material science domain, one strong limitation that has been pointed out (as mentioned in the previous section) is the black box nature of the ML models and lack of associated interpretability.…”

Section: Application Of Explainable Ai In Materials Sciencementioning

confidence: 99%

Elucidating Precipitation in FeCrAl Alloys through Explainable AI: A Case Study

Roy

Ravi

Roychowdhury

et al. 2022

Preprint

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Primary challenge of using FeCrAl in high temperature industrial setting is the formation of α’- precipitates that causes brittleness in the alloy, resulting in failure through fracture. The precipitation causes hardness change during thermal aging which is sensitive to both alloy composition and experimental condition (i.e., temperature and time of heat treatment). A Gaussian Process Regression (GPR) model is built on the hardness data collected at GE Research. Subsequently, for the first time, SHapley Additive exPlanations (SHAP) built upon the GPR is used as an Explainable Artificial Intelligence (XAI) tool to understand the effect of feature values in driving the hardness change. Several key insights are affirmed and obtained from a material science perspective.

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“…Since 2007, the mesh-insensitive structural stress method has been adopted as an alternative fatigue evaluation method for welded components by ASME Section VIII Division 2 Code [19]. In recent years, the theory and engineering application of the mesh-insensitive structural stress method has been carried out continuously [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

An Improved 2D Meshfree Radial Point Interpolation Method for Stress Concentration Evaluation of Welded Component

et al. 2020

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The study of characterizing the stress concentration effects at welds is one of the most important research directions for predicting the fatigue life of welded components. Stress solutions at the weld toe obtained from conventional meshfree methods are strongly influenced by parameters used in the methods as a result of stress singularity. In this study, an improved 2D meshfree radial point interpolation method (RPIM) is proposed for stress concentration evaluation of a welded component. The stress solutions are insensitive to parameters used in the improved RPIM. The improved RPIM-based scheme for consistently calculating stress concentration factor (SCF) and stress intensity factor at weld toe are presented. Our studies provide a novel approach to apply global weak-form meshfree methods in consistently computing SCFs and stress intensity factors at welds.

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A spectral fatigue method incorporating non-proportional multiaxial loading

Cited by 12 publications

References 10 publications

Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Review of Fatigue Assessment Approaches for Welded Marine Joints and Structures

Elucidating Precipitation in FeCrAl Alloys through Explainable AI: A Case Study

An Improved 2D Meshfree Radial Point Interpolation Method for Stress Concentration Evaluation of Welded Component

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