Abstract
A new model of quasi-cleavage fracture toughness and the quasi-cleavage to microvoid coalescence transition is described. Quasi-cleavage occurs when stresses above a critical level encompass a critical area ahead of a crack tip. The underlying mechanism is a stable-to-unstable growth transition of a process zone crack. High toughness can be associated with the quasi-cleavage, particularly in cases involving shallow cracks and small size scales. A mixed quasi-cleavage-microvoid coalescence fracture mode transition occurs when the strains in the process zone exceed a critical level. Coupling these material properties with finite element calculations provides a physical basis for predicting the effects of size, geometry, loading rate and specified failure conditions relevant to actual structures using data from subsized specimens.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.