An overview of fatigue models for composite laminate materials

Azinan, Nabilah; Kadarman, A. Halim; Sidhu, Junior Sarjit Singh

doi:10.1080/15376494.2021.1929591

Cited by 10 publications

(1 citation statement)

References 257 publications

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“…The main damage modes of FRP include matrix cracking, fiber breakage, and the fiber/matrix interface debonding. In the fatigue loading process, the residual stiffness of FRP exhibits non-linear degradation, which can be divided into three stages, 12,[15][16][17] as shown in Figure 1. In Stage I, dispersed cracking occurs in the matrix of the composite, with the crack development and slip resulting in a significant decrease in stiffness.…”

Section: Residual Stiffness Modelmentioning

confidence: 99%

A quantitative residual stiffness model for carbon fiber reinforced polymer tendons

Wang,

Zhang,

Gonzalez‐Libreros

et al. 2024

Fatigue Fract Eng Mat Struct

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In this study, tension‐tension fatigue tests were conducted to investigate the residual stiffness degradation of carbon fiber‐reinforced polymer (CFRP) tendons. Different stress levels were used in the tests, and measurements of residual stiffness and the number of loading cycles were taken. Based on experimental data for CFRP tendons, a quantitative residual stiffness model was developed by modifying Yao's model. This model is applicable to various stress levels. To assess its accuracy and applicability, the predicted results of this model were compared with those of cited models from other researchers. The findings revealed a three‐stage degradation of residual stiffness in CFRP tendons under different stress levels. Furthermore, it was observed that the proportion of fatigue life accounted for by Stage III decreased with smaller stress ranges, while the proportion accounted for by Stage II increased. The proposed quantitative residual stiffness model was verified using both experimental and cited data.

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Section: Residual Stiffness Modelmentioning

confidence: 99%