Abstract
Periodic tensile overloads superposed on constant amplitude cycles are applied on typical fracture mechanics specimens made of Al-alloy 7075-T6 and the retardation on fatigue crack propagation is investigated. The loading is chosen to remain within the plane strain range. As overloads are applied densely together or remotely to each other the resulting retardation is observed to be low. For overload ratio of 1.65—which corresponds to a retardation of 1300 cycles in single-spike over loading—periodic overloads separated by 500 constant amplitude cycles led to maximum interaction. Experiments showed that periodic overloads can be treated as pseudo-constant-amplitude loading in developing models to predict crack growth.
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.
