Abstract
The purpose of this paper is to study the effects of a new stop-hole technique on the subsequent
delay in fatigue crack propagation. Single edge notch tension specimens of S690
steel alloy are used to perform the fatigue crack initiation/growth tests under cyclic stress
loading. A parametric study is conducted on different geometrical parameters of double
stop-hole. The experimental procedure is simulated using finite element analysis and fatigue
life models. The experiments including fatigue crack initiation/growth measurements
and microscopic examinations beside the numerical results show that the fatigue life
extension caused by the double stop-hole method is significantly more than that of the
conventional single stop-hole method. The lower stress level around the double stophole
plays an important role in increasing the fatigue initiation life from the stop-hole
edge.
delay in fatigue crack propagation. Single edge notch tension specimens of S690
steel alloy are used to perform the fatigue crack initiation/growth tests under cyclic stress
loading. A parametric study is conducted on different geometrical parameters of double
stop-hole. The experimental procedure is simulated using finite element analysis and fatigue
life models. The experiments including fatigue crack initiation/growth measurements
and microscopic examinations beside the numerical results show that the fatigue life
extension caused by the double stop-hole method is significantly more than that of the
conventional single stop-hole method. The lower stress level around the double stophole
plays an important role in increasing the fatigue initiation life from the stop-hole
edge.
| Original language | English |
|---|---|
| Pages (from-to) | 226 - 237 |
| Journal | Engineering fracture mechanics |
| Volume | 169 |
| Issue number | 0013-7944 |
| Publication status | Published - 23 Nov 2016 |
ASJC Scopus subject areas
- Materials Science(all)