Publication Date:
2018
Abstract:
Rotating bending fatigue tests were executed on A356‐T6 wheels. The tests
were performed both on components containing only the casting defects and
on wheels in which artificial holes were machined. Results show the detrimental
effect of sub‐superficial porosities on fatigue endurance. A predictive
model was proposed. It resulted in a useful tool for the designer because
knowing the applied stress, it is possible to estimate the number of cycles for
crack nucleation considering the size of the defect, whereas knowing the
endurance target requested it is possible to find the maximum defect size
acceptable considering the applied stress.
were performed both on components containing only the casting defects and
on wheels in which artificial holes were machined. Results show the detrimental
effect of sub‐superficial porosities on fatigue endurance. A predictive
model was proposed. It resulted in a useful tool for the designer because
knowing the applied stress, it is possible to estimate the number of cycles for
crack nucleation considering the size of the defect, whereas knowing the
endurance target requested it is possible to find the maximum defect size
acceptable considering the applied stress.
CRIS type:
1.1 Articolo in rivista
Keywords:
A356 alloy; Aluminium wheels; Casting defects; Fatigue limit; Materials Science (all); Mechanics of Materials; Mechanical Engineering
List of contributors:
Tebaldini, Mirella; Petrogalli, C.; Donzella, G.; Gelfi, M.; La Vecchia, G. M.
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