Abstract
Fatigue crack propagation in a closed-cell aluminum alloy foam is experimentally investigated in this work. A series of fatigue tests are conducted to obtain the a-N curves (i.e. crack length vs loading cycle number) and da/dN-∆K curves (fatigue crack propagation rate vs stress intensity). Statistical analysis is carried out to assess the stochastic and scattering characteristics in the fatigue crack propagation of the foam, based on which a statistical fatigue crack propagation model is developed. Furthermore, the fracture surfaces of the foam specimens are characterized, as well as the fatigue fracture morphologies. It is demonstrated that the structural heterogeneity inherent in the material and the difference in the cell structures between different specimens account for the great scatter of the fatigue crack propagation in the close-cell aluminum alloy foam.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
