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Vibration fatigue analysis of circumferentially notched specimens under coupled multiaxial random vibration environments
Author(s) -
Luo Zhengbo,
Vantadori Sabrina,
Ronchei Camilla,
Carpinteri Andrea,
Chen Huaihai
Publication year - 2021
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/ffe.13512
Subject(s) - vibration fatigue , vibration , structural engineering , materials science , random vibration , point (geometry) , fatigue testing , acoustics , engineering , mathematics , physics , geometry
The time domain critical plane‐based Carpinteri et al. criterion and the Theory of the Critical Distance are here combined together to propose a novel procedure for vibration fatigue analysis of circumferentially notched specimens subjected to coupled multiaxial random vibration environments. A novel metallic testing equipment is specially devised for notched specimens; meanwhile, a biaxial random vibration environment fatigue test is specially implemented on notched specimens in order to investigate how both coherence and phase shift between the auto‐spectral density functions in different directions influence the specimen fatigue life. The location of the verification point where to perform the fatigue damage estimation is determined by applying both the point method and the Carpinteri et al. criterion (for damage evaluation). The obtained results prove that the proposed procedure can provide satisfactory fatigue life estimations.