Fatigue life evaluation of composite material sleeve using a residual stiffness model

Kim, Jong Sung; Bae, Kyung Dong; Lee, Chul; Kim, Yun Jae; Kim, Woo Sik; Kim, Ik Joong

doi:10.1016/j.ijfatigue.2017.02.026

Cited by 5 publications

(2 citation statements)

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“…Despite the considerable efforts given to experimental analysis of fatigue in composite pipes, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] very limited studies have performed theoretical simulation on composite pipes/ rings. [18][19][20][21] Fatigue lifetime of the buried natural gas pipe repaired with a composite sleeve was predicted by Kim et al 18 The fatigue life of the damaged pipe after occurrence of the delamination was investigated based on the stiffness reduction arising from adhesive damage. 18 Rafiee and Eslami employed progressive damage modeling (PDM) for estimating the fatigue life of composite pipes under cycling internal pressure.…”

Section: Introductionmentioning

confidence: 99%

“…[18][19][20][21] Fatigue lifetime of the buried natural gas pipe repaired with a composite sleeve was predicted by Kim et al 18 The fatigue life of the damaged pipe after occurrence of the delamination was investigated based on the stiffness reduction arising from adhesive damage. 18 Rafiee and Eslami employed progressive damage modeling (PDM) for estimating the fatigue life of composite pipes under cycling internal pressure. 19 The damage evolution was captured using stiffness degradation technique and Taguchi method was utilized to obtain proper degradation pattern.…”

Section: Introductionmentioning

confidence: 99%

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Fatigue analysis of a composite ring: Experimental and theoretical investigations

Rafiee

Abbasi

Maleki

2020

Journal of Composite Materials

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The behavior of composite rings against fatigue loading is analyzed. Experimental study is performed to evaluate the ultimate hoop strength of the composite ring as a requirement before fatigue testing. Then, fatigue tests are performed at three different load levels. Afterward, progressive damage modeling in the context of continuum damage mechanics is utilized to theoretically estimate fatigue lifetimes of the investigated rings. The modeling consists of three parts as stress analysis, damage estimation and degradation of mechanical properties. It is mainly aimed to reduce the required runtime for the accomplishment of fatigue analysis while the accuracy is at least compromised. Therefore, a manual technique is adapted for extracting stress components on the ring. Degradation of mechanical properties takes place either through gradual procedure or sets of sudden laws. The gradual degradation of mechanical properties is performed based on the damage progression as a function of cycle numbers and stress state. Sudden degradation is done after occurrence of failure. After reduction of mechanical properties, the model is updated and whole procedure repeats till the whole layers fail. Finally, the results of fatigue modeling are compared with performed experimental study and a very good agreement is observed.

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