Numerical Analysis of Rail Surface Crack Propagation under Cyclic Rolling-Sliding Contact Loads

2016 ◽  
Author(s):  
Y. Ma ◽  
V.L. Markine ◽  
A.A. Mashal
Keyword(s):  
Numerical Analysis ◽  
Crack Propagation ◽  
Surface Crack ◽  
Sliding Contact ◽  
Contact Loads

Axial crack propagation and arrest in a pressurized cylinder: An experimental-numerical analysis

1999 ◽  
Vol 39 (4) ◽  
pp. 256-264 ◽  
Author(s):  
M. Kosai ◽  
A. Shimamoto ◽  
C. T. Yu ◽  
A. S. Kobayashi ◽  
P. W. Tan
Keyword(s):  
Numerical Analysis ◽  
Crack Propagation ◽  
Axial Crack ◽  
Pressurized Cylinder ◽  
Crack Propagation And Arrest

The hot ductility behaviour of C—Mn—Nb—Al steels and its relation to crack propagation during the straightening of concast strand

1980 ◽  
Vol 295 (1413) ◽  
pp. 124-124
Keyword(s):  
Crack Propagation ◽  
Beneficial Effect ◽  
Surface Crack ◽  
Base Composition ◽  
Tensile Tests ◽  
Hot Ductility ◽  
Percentage Reduction ◽  
Temperature Range ◽  
Solution Treated ◽  
Reduction In Area

As most continuous casters used curved moulds, the as-cast strand must have sufficient hot ductility to survive the straightening operation without cracking. The influence of composition on the tendency for surface crack propagation to occur on straightening of concast strand of a commercial C—Mn-Nb-Al grade of steel, has been examined and compared with the hot ductility behaviour as measured by Gleeble tensile tests. Samples of steel with a nominal base composition of 0.15% C, 1.4% Mn, 0.03% Nb, 0.005 % N but having soluble A1 in the range < 0.01-0.07 % and P in the range 0.01-0.03 % have been solution treated to 1330 °C, cooled to test temperature and strained to fracture in the temperature range 1000-700 °C. The percentage reduction in area passed through a minimum in the temperature range 750-800 °C. Of the elements examined, soluble A1 was found to be the most deleterious to ductility for test temperatures above 850 °C. The niobium addition tended to reduce hot ductility most significantly for temperatures below 850 °C. Phosphorus, surprisingly, was found to have a small beneficial effect on hot ductility.

Study on crack propagation simulation of surface crack in welded joint structure

2014 ◽  
Vol 39 ◽  
pp. 315-334 ◽  
Author(s):  
Satoyuki Tanaka ◽  
Takahiro Kawahara ◽  
Hiroshi Okada
Keyword(s):  
Crack Propagation ◽  
Surface Crack ◽  
Welded Joint ◽  
Joint Structure
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