Fatigue Failure Predictions of Laminated Composites using Mechanical Properties Degradation and Continuum Damage Models

Khan, Arafat I.; Venkataraman, Satchi; Miller, Ian

doi:10.2514/6.2018-1642

Cited by 2 publications

(2 citation statements)

References 29 publications

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“…So far, many researchers have done plenty of studies on fatigue damages in composite materials, including analytical research and experimental research. Analytical models could be sorted into following categories [3,4]: 1) residual strength model [5,6], 2) residual stiffness model [7][8][9][10][11][12], 3) continuum damage mechanics (CDM)-based model [13,14] and 4) micromechanics-based model [15]. Stojkovic et al [6] developed a twoparameter analytical model for the prediction of residual strength of composite materials under fatigue loadings.…”

Section: Introductionmentioning

confidence: 99%

A Micro–macro Damage Mechanics-based Model for Fatigue Damage and Life Prediction of Fiber-reinforced Composite Laminates

Yao²,

Shen³

2022

Appl Compos Mater

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A multidirectional damage model was proposed to predict fatigue damage evolution and final failure of composite laminates in this paper. A damage characterization model for composite laminates was established to characterize the influence of three main damage modes on the damaged mechanical behavior of composite laminates at micro–macro level. The damage evolution model was also established based on damage mechanics to predict the evolution of the three damage modes and stiffness degradation of composite laminates by means of damage characterization model. Then, a relationship between residual stiffness and residual strength was introduced, from which the residual strength could be obtained according to the predicted residual stiffness. When the residual strength is calculated to decrease to the maximum applied stress of fatigue loading after several cycles, the composite laminate was assumed to fail, and accordingly the fatigue life could be obtained. In order to verify the model, the predicted stiffness degradation and fatigue life of two cross-ply laminates under fatigue loadings with different stress levels were compared to experimental results. The standard derivation of stiffness degradation and average errors of fatigue between prediction results and experimental results were less than 0.1 and 8.26%, respectively, indicating the effectiveness and reliability of proposed model.

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Section: Introductionmentioning

confidence: 99%

A Micro–macro Damage Mechanics-based Model for Fatigue Damage and Life Prediction of Fiber-reinforced Composite Laminates

Yao²,

Shen³

2022

Appl Compos Mater

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“…A broader review of published papers in this area is presented e.g., by Shokrieh [3,4] and Muc, Romanowicz [5]. The fatigue failure and damage analysis of composites with an open hole is also discussed by Khan et al [6,7]. These papers make also clear distinctions between the empirical and continuum damage mechanics-based models for fatigue analysis.…”

Section: Introductionmentioning

confidence: 99%

Fatigue-Damage Evolution of Notched Composite Multilayered Structures under Tensile Loads

et al. 2018

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The problems discussed in the present paper are well-known both from the theoretical (numerical) and experimental point of view. The novelty of our approach depends on the application of hybrid experimental methods and a comparison of their effectiveness in the description of complicated fatigue problems arising in the analysis of the behavior of laminated panels with open holes and subjected to tensile loading. Three experimental methods were used: infrared thermography (passive), structural health monitoring (active), and digital image correlation. The experimental investigations were supplemented by the finite element description of the problem dealing mainly with the static behavior, monitoring the development and final fracture of composites. The considerations concern laminated panels oriented at ±45 • with different types of holes, i.e., vertical elliptical, horizontal elliptical, and circular.

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Fatigue Failure Predictions of Laminated Composites using Mechanical Properties Degradation and Continuum Damage Models

Cited by 2 publications

References 29 publications

A Micro–macro Damage Mechanics-based Model for Fatigue Damage and Life Prediction of Fiber-reinforced Composite Laminates

A Micro–macro Damage Mechanics-based Model for Fatigue Damage and Life Prediction of Fiber-reinforced Composite Laminates

Fatigue-Damage Evolution of Notched Composite Multilayered Structures under Tensile Loads

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