Abstract
The process of formation of fatigue macrocracks in stress concentrators is regarded as a two-parameter process described by the amplitude of local stresses at a distance d* from the tip of the concentrator and the size of the process zone d* regarded as a structural parameter of the material. It is shown that the quantity d* determines the length of an incipient macrocrack for a given material (ai=d*) and the value of the effective cyclic stress concentration factor Kf. We perform a comparative analysis of the experimental and numerical methods for the evaluation of the parameter d*. For compact notched specimens, we compare the results of determination of the factor Kf on the basis of the proposed approach and by using the well-known Neuber and Peterson relations, and we discuss the efficiency and advantages of the known and proposed approaches.
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.
