ISSN:
1460-2695
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract— The conditions for non-propagating LEFM type fatigue cracks were investigated on an Inconel, 617 Alloy in the range of Kmax between 10 and 50 MPa m1/2 under four different types of fatigue loading conditions. In all tests, Kmax was held constant during the fatigue cycling prior to determining the non-propagation condition. It was found that with decreasing range of applied K the fatigue tolerance range ΔKeff, th increases. Furthermore, there is slight increase of ΔKeff,th with decreasing Kmax of approximately 20–30% when Kmax is decreased from 50 to 10 MPa m1/2. The results of the four types of tests are considered in respect to the damage in the near-region of the crack front, i.e. increasing Kmax increases the damage zone and therefore decreases the fatigue tolerance range ΔKeff,th.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1460-2695.1987.tb00209.x
Permalink