Study of random fatigue behavior of C/SiC composite thin-wall plates

Wu, Zengwen; Liang, Jun; Fu, Maoqing; Fang, Guodong; Zhou, Zhen-Gong

doi:10.1016/j.ijfatigue.2018.07.001

Cited by 18 publications

(5 citation statements)

References 17 publications

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“…However, stochastic load may occur during cyclic-fatigue loading, and cause extra damage in the composite, which affects the values of FLS. 27,28 Wu et al 29 performed experimental investigation on the vibration fatigue behavior of C/SiC composites under random loading. The stochastic vibration overloading degraded the fatigue life and FLS of the composites.…”

Section: Introductionmentioning

confidence: 99%

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Prediction of fatigue limit stress in C/SiC composites: Effect of stochastic load spectrum

2024

Int J Applied Ceramic Tech

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Under cyclic‐fatigue loading, stochastic loading may occur and affect the fatigue limit stress (FLS) in C/SiC composites. In this paper, the FLSs in different C/SiC composites were predicted considering stochastic loading spectrums. Damage mechanisms of interface wear and fibers failure were considered in the global load sharing criterion to determine the fracture life and fiber's failure probability in three different stochastic loading spectrums, that is, constant, increasing and decreasing stochastic stress spectrum. Experimental FLS and fatigue life degradation rate were predicted using the developed micromechanical approach, and the effect of cyclic duration under stochastic spectrums on the FLS was analyzed. Relationships among the FLS, life degradation rate, stochastic spectrum, and cyclic duration were established.

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Section: Introductionmentioning

confidence: 99%

“…obtained the FLS of 2.5D‐C/SiC composites in warp and weft direction, that is, about 85% of the composite's tensile strength at room temperature. However, stochastic load may occur during cyclic‐fatigue loading, and cause extra damage in the composite, which affects the values of FLS 27,28 . Wu et al 29 .…”

Section: Introductionmentioning

confidence: 99%

Prediction of fatigue limit stress in C/SiC composites: Effect of stochastic load spectrum

2024

Int J Applied Ceramic Tech

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“…During real application, random loading may occur and affect the fatigue life of composite. 25,26 Suzuki et al 27 developed a stiffness degradation model for life prediction of fiber-reinforced composites under stochastic loading. Gholami et al 28 predicted the fatigue life in laminated composites using a continuum damage mechanics-based model.…”

Section: Introductionmentioning

confidence: 99%

Stochastic fatigue life prediction in C/SiC composites at elevated temperature by micromechanics-based damage model

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this paper, a micromechanical approach is developed to predict the fatigue life and fracture process in different C/SiC composites subjected to different stochastic fatigue loading spectrums at elevated temperatures. Three types of stochastic fatigue load spectrums are considered in the fatigue life prediction at elevated temperature, that is, constant, increasing, and decreasing stochastic stress with cycles. Stress distribution between intact and broken fibers and the broken fibers fraction under stochastic fatigue loading spectrum are determined using the Global Load Sharing criterion considering multiple fatigue damage mechanisms at elevated temperatures. A new damage parameter of fatigue life degradation rate is developed to characterize the effect of stochastic loading on fatigue damage and fracture in C/SiC composites. Relationships between stochastic fatigue loading spectrum, broken fibers fraction, fatigue life, and fatigue life degradation rate in different C/SiC composite are established. Effects of stochastic fatigue loading spectrum type, stress level, and testing temperature on fatigue life degradation rate are discussed. The fatigue life degradation rate is very sensitive to the fiber preform, loading sequence, and testing temperature.

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“…The paper reported by Paul Van Der Sypt et al reposes an experimental protocol on both micro and macroscopic level to monitor the mechanical response of a pin-loaded Carbon reinforced fiber polymer laminate under different cyclic loadings conditions [6]. Zengewn Wu et al studied that the fiber pull-out and fiber splitting were the majority failure mode of fibers in both the longitudinal and transverse directions and also damage in specimen is mainly due to the tensile force induced in reverse bending load [7]. Failure is observed around an open hole where stress is concentrated in mid of plies quasi-isotropic GFRP laminate under fatigue loading when dynamic strain reaches or exceeds static strain by Pintu Kumar Vishwakarma et al [8].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Characterization Of Sisal Fiber Reinforced Composites Using Experimental And Finite Element Method

Babu¹,

Kumar²,

Prasanthi³

et al. 2019

IJITEE

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The objective of this study is to investigate the fatigue behavior of sisal fiber reinforced with carbon nanotubes. The hand lay-up technique is used to prepare the composite material samples. The fatigue response of pure polymer matrix, composite material which is prepared by reinforcing a sisal fiber reinforced with a polymer matrix was studied. The effectiveness of nano reinforcement of fatigue response is identified from experiments. Later, the fatigue response of sisal and nano particle reinforced sisal fiber composites (hybrid composite) is identified with irregularities by using finite element based software ANSYS. The elastic properties of sisal fiber reinforced composite and carbon nanotube reinforced composite is estimated by using the principles of Micromechanics and Macro-mechanics. The failure mechanism of polymer, conventional sisal fiber composites and nano filled sisal fiber reinforced composites are identified. The effect of the shape of the irregularities on the fatigue response is also identified from ANSYS software. From the present work, it is observed that, the reinforcement of nano reinforcement has considerable influence on the fatigue response of the resulting composite.

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Study of random fatigue behavior of C/SiC composite thin-wall plates

Cited by 18 publications

References 17 publications

Prediction of fatigue limit stress in C/SiC composites: Effect of stochastic load spectrum

Prediction of fatigue limit stress in C/SiC composites: Effect of stochastic load spectrum

Stochastic fatigue life prediction in C/SiC composites at elevated temperature by micromechanics-based damage model

Fatigue Characterization Of Sisal Fiber Reinforced Composites Using Experimental And Finite Element Method

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