Strength and stiffness degradation modeling and fatigue life prediction of composite materials based on a unified fatigue damage model

Gao, Jianxiong; Zhu, Pengnian; Yuan, Yiping; Wu, Zhifeng; Xu, Rongxia

doi:10.1016/j.engfailanal.2022.106290

Cited by 30 publications

(14 citation statements)

References 43 publications

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“…14 And some scholars have also put forward some new methods to solve the fatigue problem. [15][16][17] A microscopic observation method of in situ damage was proposed. 18 It had a high resolution in size and time and could reliably measure the propagation rate of small cracks.…”

Section: Introductionmentioning

confidence: 99%

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Fatigue life prediction of eccentric springs for the automobiles considering residual stress

Shi

Liu

Zhu

2023

Fatigue Fract Eng Mat Struct

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Springs are widely used in the automobile industry. They can produce large elastic deformation under the action of load. The fracture failure of springs will cause significant loss or maintenance costs. The fatigue life of springs is greatly affected by load eccentricity and residual stress. Some existing methods are not accurate enough to predict the life of springs. The cracked spring stresses are computed considering load eccentricity. Based on the Walker model, a method for predicting the spring fatigue life is proposed. The model combines the superposition principle and the closure effect, and it can consider residual stress, crack closure effect, and load eccentricity at the same time. The results demonstrate that the improved model has a better performance than the Walker model.

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Section: Introductionmentioning

confidence: 99%

“…A general program was proposed to predict the high and low cycle fatigue life of steam turbine shaft 14 . And some scholars have also put forward some new methods to solve the fatigue problem 15–17 . A microscopic observation method of in situ damage was proposed 18 .…”

Section: Introductionmentioning

confidence: 99%

Fatigue life prediction of eccentric springs for the automobiles considering residual stress

Shi

Liu

Zhu

2023

Fatigue Fract Eng Mat Struct

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“…A large number of works on this topic are devoted to the experimental investigation of the degradation of the polymer composites' mechanical properties (elasticity modulus and tensile strength) during uniaxial cyclic loading [13][14][15][16][17][18][19]. On the other hand, the overwhelming majority of composite structures are in a complex stress-strain state, so it is necessary to study fatigue sensitivity of composites under multiaxial cyclic loading.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties Degradation of Fiberglass Tubes during Biaxial Proportional Cyclic Loading

et al. 2023

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Composite structures during an operation are subjected to various types of external loading (impact, vibration, cyclic, etc.), which may lead to a decrease in mechanical properties. Previously, many experimental investigations of the mechanical behavior of composites under uniaxial cyclic loading were carried out. Acquisition of new data on the reduction of composite materials’ mechanical characteristics under conditions of multiaxial cyclic loading, as well as verification of existing models for calculation of the residual properties, are relevant. Therefore, this work is devoted to the experimental investigation of the mechanical behavior of fiberglass tubes under proportional cyclic loading. Static and fatigue tests were carried out under tension with torsion conditions. Inhomogeneous strain fields were obtained using a non-contact optical video system VIC-3D. The structural damage accumulation processes were analyzed by an AMSY-6 acoustic emission signals recording system. Surface defects were determined using a DinoLite microscope. Residual dynamic elastic modules were calculated during fatigue tests, and fatigue sensitivity curves were built. Data was approximated using various models, and their high descriptive capability was revealed. Damage accumulation stages were determined. The dependence of the models’ parameters on a stress state were observed. It was concluded that multiaxial cyclic loading leads to a significant decrease in mechanical properties, which should be taken into account in composite structure design.

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“…53 Fatigue is one of the main reasons for the failure of engineering structures which are subjected to cyclic loadings from some sources such as vibration, transmission of power, and compression/decompression. 54 There are different principal methods to evaluate the fatigue life of composite materials, including residual strength, [55][56][57] residual stiffness 55,57 as well as empirical approaches. 58,59 Shahverdi et al 60 proposed a phenomenological fatigue crack growth formulation to model and predict the fatigue and fracture responses of the adhesively bonded pultruded glass fiber-reinforced polymer double cantilever beam (GFRP DCB) joints subjected to various load ratios.…”

Section: Introductionmentioning

confidence: 99%

“…They produced two sets of specimens with neat adhesive and adhesive reinforced with RGO and found out that the fatigue life of adhesively bonded lap joints reinforced with RGO is increased. Gao et al 57 presented the residual strength and stiffness methods on the basis of a unified fatigue damage model and predicted fatigue life of composite materials subjected to variable amplitude cyclic loading. They showed that the proposed models were flexible enough to fit strength and stiffness degradation data with acceptable harmony and also declared that fatigue life prediction methods could calculate composites fatigue life with high accuracy.…”

Section: Introductionmentioning

confidence: 99%

Effect of graphene nano-additives on the fatigue limit of fiber-reinforced polymer hybrid composites—A micromechanical modeling procedure

Rahnama,

Ansari,

Hassanzadeh-Aghdam

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this article, the effect of graphene nanoadditives on the fatigue limit of unidirectional glass fiber-reinforced polymer (GFRP) composites has been investigated. A micromechanical model based on the crack growth has been used to analyze the fatigue limit response of unidirectional GFRP hybrid composite containing nanoadditives. The influence of different percentages of graphene nanosheets (GNS) and different types of nanofiller dispersion has been investigated by the micromechanical model. The fatigue limit of unidirectional GFRP hybrid composites has been plotted in terms of glass fiber volume fraction, interfacial friction shear stress, interfacial fracture energy and reference length. The fatigue limit of unidirectional composites can be improved by addition of GNS into the polymer matrix of such composite systems. The obtained results on the GNS dispersion type demonstrate that the uniform dispersion of GNS into the polymer matrix increases the fatigue limit of unidirectional GFRP hybrid composites. As the agglomeration density of GNS is low, the fatigue limit of GFRP hybrid composites will be improved more than when the density of agglomeration is high.

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Strength and stiffness degradation modeling and fatigue life prediction of composite materials based on a unified fatigue damage model

Cited by 30 publications

References 43 publications

Fatigue life prediction of eccentric springs for the automobiles considering residual stress

Fatigue life prediction of eccentric springs for the automobiles considering residual stress

Mechanical Properties Degradation of Fiberglass Tubes during Biaxial Proportional Cyclic Loading

Effect of graphene nano-additives on the fatigue limit of fiber-reinforced polymer hybrid composites—A micromechanical modeling procedure

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