The Effects of Stress and Temperature on the Open-Hole Tension Fatigue Behavior of a Graphite/Bismaleimide Composite

2009 ◽  
pp. 179-179-20 ◽  
Author(s):  
WM Johnston ◽  
TS Gates
Keyword(s):  
Fatigue Behavior ◽  
Open Hole ◽  
Effects Of Stress

Comparison of composite damage growth tools for fatigue behavior of notched composite laminates

2017 ◽  
Vol 51 (15) ◽  
pp. 2227-2249 ◽  
Author(s):  
SP Engelstad ◽  
SB Clay
Keyword(s):  
Composite Laminates ◽  
Fatigue Behavior ◽  
Fatigue Loading ◽  
Lessons Learned ◽  
Progressive Damage ◽  
Damage Analysis ◽  
Damage Growth ◽  
Composite Damage ◽  
Open Hole ◽  
Air Force Research Laboratory

This paper provides overall comparisons of the fatigue results of an Air Force Research Laboratory exploration into the state of the art of existing technology in composite progressive damage analysis. This program performed blind and recalibration benchmarking exercises for nine different composite progressive damage analysis codes using unnotched and open-hole composite coupons under both static and fatigue loading. This paper summarizes the results of the fatigue portion of this program in which seven of the codes were evaluated. Comparisons are made herein for all seven participants’ predictions with the test data. Overall percent error data are presented, as well as a long list of observations and lessons learned during this year-long effort.

Effects of Stress Amplitude on Fatigue Behavior of Extruded Mg-3Al-2Sc Alloy

2013 ◽  
Vol 275-277 ◽  
pp. 1829-1832
Author(s):  
Gui Ying Sha ◽  
Jie Wang ◽  
Teng Liu ◽  
Zhao Hua Li ◽  
Yu Han
Keyword(s):  
Fatigue Life ◽  
Crack Propagation ◽  
Fatigue Testing ◽  
Stress Amplitude ◽  
Fatigue Behavior ◽  
Propagation Mechanism ◽  
Stable Crack Propagation ◽  
Effects Of Stress ◽  
Crack Propagation Mechanism ◽  
Combined Mode

Through stress-controlled fatigue testing under different stress amplitudes, effects of stress amplitude on the fatigue life and crack propagation mechanism of the extruded Mg-3Al-2Sc alloy were investigated. The results show that, within the stress range of 13.5~82.5 MPa and stress ratio of 0.2, the fatigue life of the alloy decreases and growth rate of fatigue crack increases with increasing stress amplitude. Cleavage fracture mode dominates the crack initiation area and stable crack propagation area. For the final rapid fracture area, the fatigue fracture is combined mode of semi-cleavage and cleavage as well as intercrystalline fracture.

Effects of drilling strategies for CFRP/Ti stacks on static mechanical property and fatigue behavior of open-hole CFRP laminates

2021 ◽  
Vol 64 ◽  
pp. 409-420
Author(s):  
Qinglong An ◽  
Bingfu Zhong ◽  
Xianfeng Wang ◽  
Hongzhou Zhang ◽  
Xiaofeng Sun ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Fatigue Behavior ◽  
Cfrp Laminates ◽  
Open Hole ◽  
Static Mechanical
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