Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
766404 | Engineering Fracture Mechanics | 2015 | 10 Pages |
Abstract
•A multiplicative crack propagation law is proposed including R-effects.•The Walker law was extended to take HCF-cycles into account.•More than 1000 tests were evaluated to check the new law.•The law was applied to steel, Nickel and Titanium alloys.
A new form of the crack propagation law is presented for cyclic crack propagation calculations. It is characterized by a multiplicative juxtaposition of the Paris range, the threshold and critical limit and the R-dependence. The latter is covered by a modified Walker approach, in which the influence of small cycles at high R-ratios is appropriately adjusted. The concrete form of the R-dependence was validated by application to a wide range of materials.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Guido Dhondt, Michael Rupp, Hans-Peter Hackenberg,