scholarly journals Probabilistic inference of fatigue damage propagation with limited and partial information

2015 ◽  
Vol 28 (4) ◽  
pp. 1055-1065 ◽  
Author(s):  
Min Huang ◽  
Jingjing He ◽  
Xuefei Guan
Keyword(s):  
Fatigue Damage ◽  
Partial Information ◽  
Probabilistic Inference ◽  
Damage Propagation

Fatigue damage propagation models for ductile fracture of ultrahigh toughness cementitious composites

2016 ◽  
Vol 26 (6) ◽  
pp. 919-932 ◽  
Author(s):  
Wen Liu ◽  
Shilang Xu ◽  
Peng Feng
Keyword(s):  
Ductile Fracture ◽  
Fatigue Damage ◽  
Propagation Model ◽  
Cementitious Composites ◽  
J Integral ◽  
Propagation Models ◽  
Flexural Fatigue ◽  
Damage Propagation ◽  
Propagation Law ◽  
Independent Variable

Ultrahigh toughness cementitious composites are a kind of high-performance cementitious material with a characteristic of ductile fracture. Based on the continuum damage mechanics theory and flexural fatigue damage model, two damage propagation models of ultrahigh toughness cementitious composites are built. One is a linear bilogarithmic model with J-integral range as its independent variable, while the other one is a linear model on a semilogarithmic scale with fatigue stress level as its independent variable. However, according to former research, the J-integral depends strongly on specimens’ geometry, so the first damage propagation model is deeply influenced by material dimension. As a result, the second damage propagation model is more convenient in application, shows the material fatigue property in comparison with the first model. In order to prove these two models and obtain the parameters, a three-point flexural fatigue experiment on single-edge-notched fracture specimens is carried out. The results shows that the two models fit better with the experimental results, rather than the crack propagation law of ultrahigh toughness cementitious composites.

407 High Cycle Fatigue Damage Propagation of Cross-ply CFRP Laminates

2007 ◽  
Vol 2007.15 (0) ◽  
pp. 251-252
Author(s):  
Hiroyuki KAWADA ◽  
Go Ono ◽  
Atsushi HOSOI ◽  
Narumichi SATO
Keyword(s):  
Fatigue Damage ◽  
High Cycle Fatigue ◽  
Cycle Fatigue ◽  
Cfrp Laminates ◽  
Damage Propagation

Rolling Element Bearing Fatigue Damage Propagation

1992 ◽  
Vol 114 (2) ◽  
pp. 328-333 ◽  
Author(s):  
M. R. Hoeprich
Keyword(s):  
Fatigue Damage ◽  
Accurate Diagnosis ◽  
Rolling Element Bearing ◽  
Damage Propagation ◽  
Spall Damage ◽  
Test Conditions ◽  
Rolling Element ◽  
Element Bearing ◽  
Useful Life ◽  
Spall Propagation

Rolling element bearing fatigue spalls were propagated for several test conditions well beyond the laboratory criteria of 6.5 square millimeters used in the author’s laboratory. Usually more than one mode of fatigue spall propagation is involved when large spalls develop. The information provided in this paper can be used to gain an appreciation of the total useful life of a bearing and to allow a more accurate diagnosis of fatigue spall damage.

Fatigue Life Prediction of Composite Pin Joints

2014 ◽  
Vol 697 ◽  
pp. 57-61
Author(s):  
Peng Gang Mu ◽  
Xiao Peng Wan
Keyword(s):  
Fatigue Life ◽  
Fatigue Damage ◽  
Composite Structures ◽  
Degradation Process ◽  
Damage State ◽  
Damage Propagation ◽  
Damage Models ◽  
Damage Quantification ◽  
Arbitrary Loading ◽  
Damage Process

In this research, new progressive fatigue damage models are established to calculate the fatigue life and simulate damage process of composite pin joints. The proposed models based on residual strength and residual stiffness of unidirectional laminates, have three parameters to present the different damage state, which can accurately describe the growth process of fatigue damage propagation by the mathematical method. The fatigue damage models combining with stress analysis, failure analysis, and material property degradation process, can predict the fatigue life, damage state and residual material properties of composite structures under arbitrary loading conditions. Using the models, composite pin joints with different stacking sequence are analyzed, fatigue life and damage quantification are concluded simultaneously. The proposed models and the process of analysis provide a way to solve the fatigue durability of composite structures.

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