FEM Simulation of Fish-eye Crack Growth in the Very High Cycle Fatigue of a High Strength Steel

2002 ◽  
Vol 2002.15 (0) ◽  
pp. 113-114 ◽  
Author(s):  
Yuji NAKASONE
Keyword(s):  
Crack Growth ◽  
High Strength Steel ◽  
High Cycle Fatigue ◽  
Fem Simulation ◽  
High Strength ◽  
Cycle Fatigue ◽  
Very High Cycle Fatigue ◽  
Fish Eye ◽  
Very High

Effect of frequency and biofuel E85 on very high cycle fatigue behaviour of the high strength steel X90CrMoV18

2014 ◽  
Vol 60 ◽  
pp. 90-100 ◽  
Author(s):  
S. Schmid ◽  
M. Hahn ◽  
S. Issler ◽  
M. Bacher-Hoechst ◽  
Y. Furuya ◽  
...  
Keyword(s):  
High Strength Steel ◽  
High Cycle Fatigue ◽  
High Strength ◽  
Fatigue Behaviour ◽  
Cycle Fatigue ◽  
Very High Cycle Fatigue ◽  
Very High

scholarly journals Very High Cycle Fatigue of Butt-Welded High-Strength Steel Plate

Metals ◽  
2017 ◽  
Vol 7 (3) ◽  
pp. 103 ◽  
Author(s):  
Hyunho Yeom ◽  
Byungjoo Choi ◽  
Taeho Seol ◽  
Moongu Lee ◽  
Yongho Jeon
Keyword(s):  
High Strength Steel ◽  
High Cycle Fatigue ◽  
Steel Plate ◽  
High Strength ◽  
Cycle Fatigue ◽  
Very High Cycle Fatigue ◽  
Very High

scholarly journals The influence of tension mean stress to the crack initiation process at the very high cycle fatigue regime for a high strength steel

2018 ◽  
Vol 165 ◽  
pp. 20001
Author(s):  
Thomas Rohm ◽  
Karl-Heinz Lang ◽  
Marcus Korn
Keyword(s):  
Crack Initiation ◽  
High Strength Steel ◽  
High Cycle Fatigue ◽  
High Strength ◽  
Mean Stress ◽  
Cycle Fatigue ◽  
Very High Cycle Fatigue ◽  
Initiation Process ◽  
Incremental Step ◽  
Very High

Strain controlled tests were performed on a high strength steel to investigate the influence of tension mean stress to the crack initiation process at the very high cycle fatigue regime. It is supposed that the variation of stress the state in the vicinity of a non-metallic inclusion results in a change to the energy transferred to the surrounding metallic matrix. To prove this, incremental step tests on cylindrical specimen were realized in which the tension mean stress was stepwise increased. It could be verified that the hysteresis area, which is a criterion of the work transferred to the specimen, decreases with increasing tension mean stress. The test results provide a reasonable physical model to estimate the influence of tension mean stress to the crack initiation process in the very high cycle fatigue regime.

A Study on Very High Cycle Fatigue Property of High Strength Steel for Particular Use as Medical Tablets Compressing Punches

2015 ◽  
Vol 664 ◽  
pp. 221-230 ◽  
Author(s):  
Tatsuo Sakai ◽  
Akio Kokubu ◽  
Shoichi Kikuchi ◽  
Hiroshi Tanaka ◽  
Fumiharu Ikai ◽  
...  
Keyword(s):  
High Strength Steel ◽  
High Cycle Fatigue ◽  
Low Cost ◽  
Fatigue Property ◽  
High Strength ◽  
Fatigue Tests ◽  
Cycle Fatigue ◽  
Very High Frequency ◽  
Very High Cycle Fatigue ◽  
Very High

In the fabrication process of medicine tablets, working speed of the tablet compressing is an important factor to realize the high fabricating efficiency together with the low cost. Thus, a number of loadings would be applied with very high frequency to tips of a couple of compressing punches. Sometimes, the tablet compressing speed exceeds 150 tablets per second. Due to such a circumstance, the very high cycle loadings are applied to the tips of the compressing punches making medicine tablets. The high strength steel of KNS-ES was specially designed and fabricated for the particular use as the compressing punches. In this study, very high cycle fatigue tests were performed in the loading type of rotating bending in order to obtain the fundamental S-N property of this steel. Based on experimental results, the S-N property in giga-cycle regime was discussed including the effect of the residual stress on the S-N properties. Consequently, the duplex S-N curves were clearly found, but the surface-induced fractures were often found in the fatigue data belonging to the second S-N curve in the longer life region.

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