Statistical Treatment of Transverse Crack Propagation in Aligned Composites

AIAA Journal ◽  
1984 ◽  
Vol 22 (10) ◽  
pp. 1485-1490 ◽  
Author(s):  
F. Hikami ◽  
T. W. Chou
Keyword(s):  
Crack Propagation ◽  
Transverse Crack ◽  
Statistical Treatment

scholarly journals Estimation of the Transverse Crack Propagation of a Heat Treated Rail

2019 ◽  
Vol 60 (4) ◽  
pp. 274-280
Author(s):  
Mitsuru HOSODA ◽  
Jun MIZUTANI ◽  
Ryuichi YAMAMOTO
Keyword(s):  
Crack Propagation ◽  
Transverse Crack ◽  
Heat Treated

Transverse Crack Propagation Characteristics of Rail Bottom under Wheel-Rail Force

2013 ◽  
Vol 444-445 ◽  
pp. 1318-1325
Author(s):  
Jian Xi Wang ◽  
Ji Rong Gui ◽  
Si Yi Chen
Keyword(s):  
Crack Propagation ◽  
Transverse Crack ◽  
Crack Tip ◽  
Element Model ◽  
Longitudinal Force ◽  
Crack Model ◽  
Vertical Force ◽  
Propagation Characteristics ◽  
Singular Element ◽  
Increasing Trend

The finite element model of multi-span continuous beam track is established to research the stress and strain fields of rail under the wheel-rail force. On this basis, according to the practical observation of crack shape, a three-dimensional semi-elliptical crack model was established, the singular element method was employed to simulate the stress field singularity of crack tip, and the transverse crack propagation characteristics of rail bottom under wheel-rail force was studied. The results show that: with the increase of wheel-rail force (vertical, lateral and longitudinal force), KI shows an increasing trend, and with the increase of lateral force, the increase rate of KI is maximum; with the increase of vertical force, both of the KII and KIII show a decreasing trend. However, with the increase of lateral and longitudinal force, both of them show an increasing trend. From the range of stress strength factor of crack tip, the amplitude of KI at the crack tip of rail outer edge is maximum , but the crack tip amplitude of KII and KIII is maximum at partial to the rail centerline.

Investigation of helix-shaped and transverse crack propagation in rotor shafts based on disk shrunk technology

2006 ◽  
Vol 236 (4) ◽  
pp. 333-349 ◽  
Author(s):  
B. Andrier ◽  
E. Garbay ◽  
F. Hasnaoui ◽  
P. Massin ◽  
P. Verrier
Keyword(s):  
Crack Propagation ◽  
Transverse Crack

scholarly journals A Unified Approach to Contact and Structural Fatigue

2005 ◽  
Author(s):  
Ilya I. Kudish
Keyword(s):  
Crack Propagation ◽  
Statistical Treatment ◽  
Three Dimensional ◽  
Contact Fatigue ◽  
Local Stress ◽  
Asymptotic Formulas ◽  
Structural Fatigue ◽  
Material Defects ◽  
Crack Mechanics ◽  
Stress States

A unified model of fatigue that is applicable to a variety of mechanical in nature fatigue phenomena including contact and structural fatigue is introduced. The model considers two- and three-dimensional stress states. The model is based on crack mechanics, kinetics of crack propagation, and statistical treatment of material defects. The foundation of the model follows from the analysis [1, 2], a model of contact fatigue [3], and the asymptotic formulas for the stress intensity coefficients (see [4]) developed earlier. The model takes into account the local stress distribution, initial statistical distribution of defects versus their size, defect location and crack propagation directions related to the specific stress state of the material, material fatigue resistance parameters, etc. The main assumptions used for the model derivation and their validity are discussed.

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