Fatigue Life Analysis and Prediction of 316L Stainless Steel Under Low Cycle Fatigue Loading

2016 ◽  
Vol 40 (12) ◽  
pp. 1027-1035 ◽  
Author(s):  
Hyeong Oh ◽  
NohJun Myung ◽  
Nak-Sam Choi
Keyword(s):  
Stainless Steel ◽  
Fatigue Life ◽  
316L Stainless Steel ◽  
Low Cycle Fatigue ◽  
Fatigue Loading ◽  
Cycle Fatigue ◽  
Life Analysis ◽  
Fatigue Life Analysis

Prediction of Low-Cycle Fatigue Life of Specimens With Fabrication Flaws

1968 ◽  
Vol 90 (4) ◽  
pp. 620-626 ◽  
Author(s):  
A. G. Pickett
Keyword(s):  
Fatigue Life ◽  
Crack Initiation ◽  
Low Cycle Fatigue ◽  
Small Specimen ◽  
Cycle Fatigue ◽  
Notch Stress ◽  
Weld Defect ◽  
Life Analysis ◽  
Fatigue Life Analysis ◽  
Crack Initiation Life

A modification of the notch stress procedure for fatigue-life analysis is presented. The importance of considering the mechanics of the specimen and the effects of the notch on specimen mechanics is illustrated by example. The procedure is applied to correlate the results of small specimen tests with large weld defect specimen tests. The significance of crack-initiation life and crack-propagation life and the dependence of these portions of total fatigue life on specimen geometry and loading is developed.

Effect of Static Pre-Strain on Low Cycle Fatigue Life of AISI 316L Stainless Steel

2011 ◽  
Vol 462-463 ◽  
pp. 65-69
Author(s):  
Tomohiro Ido ◽  
Jun Komotori
Keyword(s):  
Stainless Steel ◽  
Fatigue Life ◽  
316L Stainless Steel ◽  
Early Stage ◽  
Low Cycle Fatigue ◽  
Cyclic Strain ◽  
Aisi 316L ◽  
Cycle Fatigue ◽  
Aisi 316L Stainless Steel ◽  
Work Softening

In order to clarify the effects of a great amount of static pre-strain (1/4 cycle) on fatigue life of AISI 316L stainless steel, strain controlled low cycle fatigue tests were carried out. Hardness and fracture ductility of specimens were measured. Results showed that in the case of a specimen with p=0.01, static pre-strain of 0.16 noticeably reduced a fatigue life. To clarify the reasons for the decrease in fatigue life with pre-strain, the maximum stress amplitude of the hysteresis loop was measured. In the case of the specimen with p=0.01, work softening was observed in the early stage of fatigue life. On the other hand, when the cyclic plastic strain ranges were p=0.10, no softening was observed. These results suggest that work softening is significant in determining the fatigue life of the specimens at a relatively low level of applied cyclic strain.

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