Mechanical joiningtechniquesarefundamental intheindustrial landscape,withweldedjoints standingoutasaprimarymethodacrossdiversemanufacturingsectors.Inthiswork,wepresent anovel contribution to fatigue lifeassessment ofwelds through3D-Scanningofweldseam. Themethodologyisappliedonweldedspecimenstestedinalternatebendingfatigue, showing that forrealcaseapplications, statisticalapproachtosurfaceirregularitiesof thejointplaysa keyrole. Inparticularbymeansof surfacescanning, somestatisticalgeometricparametersare obtainedtocharacterizetheweldseam.Thenbyexperimentalfatiguetestingarelationbetween geometricalmeasuredparameters, experimental cycles tofailureandcracknucleationsites is obtained. ThenFEMmodels generatedbasingon3dscanningareused forFEMsimulations aimingat validating the stress concentration related to surfacegeometric irregularities and fatigue life.Adedicatedsoftware, called3D-life,wasdevelopedtoprocess surfacescansand the results of thenumerical simulationand life estimationswereused topredict the crack nucleationsites.
Proposal for kf effective notch factor estimation for life assessment of welded joint based on geometric parameters / Sesana, Raffaella; Santoro, Luca. - In: ENGINEERING FAILURE ANALYSIS. - ISSN 1350-6307. - (2024). [10.1016/j.engfailanal.2023.107944]
Proposal for kf effective notch factor estimation for life assessment of welded joint based on geometric parameters
Sesana, Raffaella;Santoro, Luca
2024
Abstract
Mechanical joiningtechniquesarefundamental intheindustrial landscape,withweldedjoints standingoutasaprimarymethodacrossdiversemanufacturingsectors.Inthiswork,wepresent anovel contribution to fatigue lifeassessment ofwelds through3D-Scanningofweldseam. Themethodologyisappliedonweldedspecimenstestedinalternatebendingfatigue, showing that forrealcaseapplications, statisticalapproachtosurfaceirregularitiesof thejointplaysa keyrole. Inparticularbymeansof surfacescanning, somestatisticalgeometricparametersare obtainedtocharacterizetheweldseam.Thenbyexperimentalfatiguetestingarelationbetween geometricalmeasuredparameters, experimental cycles tofailureandcracknucleationsites is obtained. ThenFEMmodels generatedbasingon3dscanningareused forFEMsimulations aimingat validating the stress concentration related to surfacegeometric irregularities and fatigue life.Adedicatedsoftware, called3D-life,wasdevelopedtoprocess surfacescansand the results of thenumerical simulationand life estimationswereused topredict the crack nucleationsites.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/2984798