A brief discussion on (pure mode I) fatigue crack growth rate data in 5HS weave fabric composites: Evaluation of empirical relations

Shiino, Marcos Yutaka; Alderliesten, R.C.; Donadon, Maurício Vicente; Cioffi, Maria Odila Hilário

doi:10.1016/j.ijfatigue.2015.11.019

Cited by 19 publications

(20 citation statements)

References 27 publications

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“…Thus, this implies in fast crack growth, then employing the delamination growth rate as structural design parameter could be risky. To overcome this limitation, the laminate composites could be designed to operate below the SERR range necessary to initiate the crack, which is defined as SERR threshold (G th ), when dealing with composite materials …”

Section: Introductionmentioning

confidence: 99%

“…To overcome this limitation, the laminate composites could be designed to operate below the SERR range necessary to initiate the crack, which is defined as SERR threshold (G th ), when dealing with composite materials. 10,13,14 The SERR or loading threshold value is defined as a region where the assumed defects do not growth until at least 1 × 10 6 loading cycles. 14,15 The related energy is more critical for opening mode (I) of propagation in which the required energy is normally lower than other modes as II and III.…”

Section: Introductionmentioning

confidence: 99%

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Interlaminar crack onset in co‐cured and co‐bonded composite joints under mode I cyclic loading

Shiino

Ramírez

Garpelli

et al. 2018

Fatigue Fract Eng Mat Struct

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Composite joints exhibit different behavior in regard to delamination resistance when dealing with fatigue phenomenon. This research work focuses on an investigation to understand the failure mechanisms on the interfacial strength domain for delamination onset in cocured and cobonded joints. The analysis was based on strain energy release rate versus number of cycles plots that were obtained from fatigue tests in mode I with a stress ratio R = 0.1. The analysis encompassed from the microscopic to mesoscopic level obtained from scanning electron microscopic, and the images processed to extract the most relevant fracture patterns. The main difference between the two technologies was the stress concentration at the crack tip in which the cobonded joint presents a fabric carrier that blunts the adhesive layer, then delaying the delamination. This paper provides important information and guidelines to aid designers in the selection of the best composite joint for high‐performance structural applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interlaminar crack onset in co‐cured and co‐bonded composite joints under mode I cyclic loading

Shiino

Ramírez

Garpelli

et al. 2018

Fatigue Fract Eng Mat Struct

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“…The crack growth rate can be expressed as a function of SERR in a double logarithm graphic. For composites, there are plenty of parameters, for example, ∆G, G máx , that can be used to characterize delamination growth, which decision could be dependent on the relevance of each parameter …”

Section: Resultsmentioning

confidence: 99%

“…The combined mechanisms of cyclic mechanical load with temperature change will result in delamination process. This has been studied by fracture mechanics approach by employing curves of crack growth rate versus strain energy release rate (SERR) . Also, different ply orientation lay‐up can introduce local stresses which promote additional severity in delamination process .…”

Section: Introductionmentioning

confidence: 99%

“…This has been studied by fracture mechanics approach by employing curves of crack growth rate versus strain energy release rate (SERR). [11][12][13] Also, different ply orientation lay-up can introduce local stresses which promote additional severity in delamination process. 14 In fact, Lafarie-Frenot 14 followed the crack development at the edges of specimens with [0 3 /90 3 ] s lay up as a function of the number of thermal cycles.…”

Section: Introductionmentioning

confidence: 99%

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Anti‐symmetrical curved composite laminate subject to delamination induced by thermal cycling

Treml

Gouvêa²,

Sales

et al. 2017

Fatigue Fract Eng Mat Struct

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Composite structures usually undergo to temperature variations in aircraft during landing/taking off and when cruising at high altitude. Under these conditions and in combination with curved structures, they can generate severe thermal stresses that induce delaminations. Considering the importance of studying delamination in these conditions, this research imposed an anti‐symmetrical laminate to cyclic temperature variations of 130 °C and −70 °C with the objective of inducing varied curvatures and, consequently, crack growth. Different from standardized test procedures, this test setup elastically deformed coupons without external forces and forward experimentally and numerically evaluated the strain energy release rate (SERR) during crack propagation. This procedure enabled the assessment of delamination rate (da/dN) as a function of maximum SERR. The experimental results were compared with numerical results obtained by ABAQUS Finite Element code. Despite large scatter in experimental results, a reasonable correlation between experimental and numerical results was obtained in terms of crack growth rate (da/dN) as a function of the maximum SERR.

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Mode I and mode II delamination of carbon/glass/epoxy hybrid composite: A statistics‐based analysis

et al. 2021

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The delamination of a carbon/glass/epoxy hybrid composite was studied experimentally to analyze the effect of reinforcement heterogeneity on data dispersion. A statistical approach was applied to evaluate the effect of the carbon/glass/epoxy hybrid composite on the individual modes (I and II) of delamination. The analysis of variance evidenced the contribution of reinforcement type in strain energy release ratio (SERR). Curve fitting for the quasi-static test was performed with the Weibull distribution model to predict the energy release versus crack length with different reliability levels. The 60% reliability curve presented the best fit with the average of the experimental data. For all reliability levels, the hybrid composite showed an increase in SERR.

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A brief discussion on (pure mode I) fatigue crack growth rate data in 5HS weave fabric composites: Evaluation of empirical relations

Cited by 19 publications

References 27 publications

Interlaminar crack onset in co‐cured and co‐bonded composite joints under mode I cyclic loading

Interlaminar crack onset in co‐cured and co‐bonded composite joints under mode I cyclic loading

Anti‐symmetrical curved composite laminate subject to delamination induced by thermal cycling

Mode I and mode II delamination of carbon/glass/epoxy hybrid composite: A statistics‐based analysis

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