Analysis of Flexural Fatigue Damage in Unidirectional Composites

2008 ◽  
pp. 51-51-14
Author(s):  
GM Newaz
Keyword(s):  
Fatigue Damage ◽  
Unidirectional Composites ◽  
Flexural Fatigue

scholarly journals Analysis of Flexural Fatigue Damage in Woven Glass-Polyester Composites

1997 ◽  
Vol 6 (2) ◽  
pp. 096369359700600 ◽  
Author(s):  
R. Elleuch ◽  
A. Chateauminois ◽  
Ch. Bradai
Keyword(s):  
Quantitative Analysis ◽  
Fatigue Damage ◽  
Fatigue Behaviour ◽  
Fiber Bundles ◽  
Flexural Fatigue ◽  
Three Point Bending ◽  
Micro Cracks ◽  
Polyester Composite ◽  
Longitudinal Fiber ◽  
Polyester Composites

The monotonic and fatigue behaviour of a woven glass/polyester composite has been investigated under three-point bending conditions. Microscopic observations of the fatigue specimens revealed that the damage was mainly related to the early nucleation of transverse micro-cracks and delaminations along the longitudinal fiber bundles. From the quantitative analysis of the length and the orientation of these defects, it was possible to derive a lifetime criterion which was associated to a transition in damage mechanisms.

scholarly journals Model of flexural fatigue damage accumulation for cortical bone

1997 ◽  
Vol 15 (4) ◽  
pp. 607-614 ◽  
Author(s):  
L. V. Griffin ◽  
J. C. Gibeling ◽  
R. B. Martin ◽  
V. A. Gibson ◽  
S. M. Stover
Keyword(s):  
Cortical Bone ◽  
Fatigue Damage ◽  
Damage Accumulation ◽  
Flexural Fatigue ◽  
Fatigue Damage Accumulation

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.

Flexural Fatigue Damage Evolution for Partially High Percentage Fiber Reinforced Concrete

2006 ◽  
Vol 324-325 ◽  
pp. 827-830
Author(s):  
Cheng Yi ◽  
Shi Zhao Shen ◽  
He Ping Xie ◽  
Chang Jun Wang
Keyword(s):  
Reinforced Concrete ◽  
Fatigue Damage ◽  
Damage Evolution ◽  
Damage Mechanics ◽  
Fiber Volume Fraction ◽  
Volume Fraction ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Fiber Volume ◽  
Flexural Fatigue

Partially High Percentage Fiber Reinforced Concrete (PHPFRC) is a kind of cement composite in which fibers are concentrated with high volume fraction in the tension region of the component under bending. Therefore, PHPFRC possesses much higher load bearing capacity, rigidity, fatigue and fracture properties than conventional steel fiber reinforced concrete (SFRC) while its cost is similar to that of SFRC. In this paper, the fatigue test of PHPFRC is carried out to gain its flexural fatigue damage evolution rule. It is found from the test that, PHPFRC have long post-crack fatigue life and its fatigue damage is tough damage. Based on the continuum damage mechanics and fatigue behavior of the specimens, a fatigue damage variable D for PHPFRC is defined and the elementary form of damage evolution function is determined. For the specimens in which average fiber volume fraction are 1.2% and local fiber volume fraction are 10%, the function parameters and the damage threshold value are given according to the test results.

Fatigue damage growth and fatigue life of unidirectional composites

2021 ◽  
pp. 108656
Author(s):  
Bent F. Sørensen ◽  
Stergios Goutianos ◽  
Lars P. Mikkelsen ◽  
Søren Fæster
Keyword(s):  
Fatigue Life ◽  
Fatigue Damage ◽  
Damage Growth ◽  
Unidirectional Composites

Strain-Controlled Flexural Fatigue of Unidirectional Composites

1982 ◽  
Vol 4 (1) ◽  
pp. 6 ◽  
Author(s):  
TT Chiao ◽  
KL Reifsnider ◽  
GP Sendeckyj ◽  
EJ Morgan ◽  
PL Lien ◽  
...  
Keyword(s):  
Unidirectional Composites ◽  
Flexural Fatigue
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