Fatigue delamination of composite materials – approach to exclude large scale fibre bridging

Alderliesten, R.C.

doi:10.1088/1757-899x/388/1/012002

Cited by 8 publications

(10 citation statements)

References 27 publications

(28 reference statements)

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“…The next steps of the “zero-fiber bridging” methodology were performed on the fatigue crack growth curves with

( Figure 12 c), since they showed the most similar behavior to that described in this methodology [ 21 ]. Firstly, the data points of every curve were translated to an arbitrary value of

of 10 −7 m/cycle using Equation (12) ( Figure 13 ).…”

Section: Resultsmentioning

confidence: 99%

“…Figure 13 b shows a plot of

versus the corresponding crack length, which is described with a non-linear relationship. Alderliesten et al [ 21 ] note that this relationship can be described with a second order polynomial function of

which reaches a horizontal asymptote at the moment of full development of fiber bridging or a steady state. Further, the regression analysis was performed using Equation (13) as described in the methodology.…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, a series of fatigue tests was performed on one DCB specimen of c-10-350 type as a preliminary attempt to check the applicability of the ‘zero-fiber bridging’ methodology proposed for eliminating the effects of large-scale fiber bridging in fatigue mode I tests [ 13 , 21 ] to laminates with multiple cracking. According to this methodology, the specimen was first pre-cracked under quasi-static loading at a rate of 1 mm/min, yielding

for the following fatigue fracture loading with a

-ratio of 0.1.…”

Section: Methodsmentioning

confidence: 99%

“…In addition, three-point bending tests were performed on specimens prior to and after DCB testing to determine a possible change in the flexural modulus. Moreover, a ‘zero-fiber bridging’ methodology for the determination of ‘conservative’ mode I delamination resistance data [ 21 ] was applied as a preliminary attempt to exclude the effect of multiple cracking and fiber bridging on the fatigue crack propagation.…”

Section: Introductionmentioning

confidence: 99%

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Quantification Approaches for Fatigue Crack Resistance of Thermoplastic Tape Layered Composites with Multiple Delaminations

et al. 2021

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Automated tape placement with in-situ consolidation (ATPisc) is a layer-wise manufacturing process in which the achievement of proper interlayer bonding constitutes one of the most challenging aspects. In the present study, unidirectional carbon fiber reinforced thermoplastic laminates were produced following different manufacturing protocols using ATPisc. The interlayer bonding of the laminates produced was characterized by mode I fatigue fracture tests with double cantilever beam (DCB) specimens. Independent of the manufacturing approach, the laminates exhibited multiple cracking during DCB testing, which could not be evaluated simply following standard methods. Thus, various data analysis methodologies from literature were applied for the quantitative assessment of the fracture behavior of the laminate. The examination of the evolution of the damage parameter φ and the effective flexural modulus throughout testing enabled a better understanding of the damage accumulation. The Hartman-Schijve based approach was revealed to be a convenient method to present fatigue crack growth curves of laminates with multiple delaminations. Moreover, a preliminary attempt was made to employ a ‘zero-fiber bridging’ methodology to eliminate the effect of additional damage processes on the fatigue crack growth that resulted in large-scale, partially massive fiber bridging.

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“…The next steps of the “zero-fiber bridging” methodology were performed on the fatigue crack growth curves with

( Figure 12 c), since they showed the most similar behavior to that described in this methodology [ 21 ]. Firstly, the data points of every curve were translated to an arbitrary value of

of 10 −7 m/cycle using Equation (12) ( Figure 13 ).…”

Section: Resultsmentioning

confidence: 99%

“…Figure 13 b shows a plot of

Section: Resultsmentioning

confidence: 99%

for the following fatigue fracture loading with a

-ratio of 0.1.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Quantification Approaches for Fatigue Crack Resistance of Thermoplastic Tape Layered Composites with Multiple Delaminations

et al. 2021

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show abstract

“…However, majority of experimental studies are devoted to the propagation stage of interlaminar damage. 3–10 The influence of various parameters like temperature, 11–13 stress and load ratio, 8,14–17 fiber-bridging phenomenon, 5,18–21 and hydraulic fluid and deicing fluid exposure 22 on delamination behavior of laminated composite under cycling loading are experimentally investigated.…”

Section: Introductionmentioning

confidence: 99%

A cohesive zone model for predicting the initiation of Mode II delamination in composites under cyclic loading

Rafiee

Sotoudeh

2020

Journal of Reinforced Plastics and Composites

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A new approach for simulating delamination initiation under cyclic loading is proposed. This approach is based on the hysteresis cohesive zone modeling and the gradual degradation of interface properties. The initiation of delamination is predicted based on the monotonic traction–separation law of the interface. A damage criterion is proposed that depends on the bilinear traction–separation law and interlaminar stiffness is degraded by defining a damage parameter as a function of number of cycles and bilinear traction–separation law parameters. Numerical simulation is accomplished by implementing 2D finite element modeling for the case of double-notched specimen. Four-node zero-thickness interfacial cohesive elements are defined to capture the delamination behavior of midplane in the specimen. The results of numerical simulation are compared with available experimental data and a good agreement is observed. The main novelty of this research lies on assuming a cycle-by-cycle irreversible decrease in interlaminar stiffness prior to damage initiation and applying a damage criterion based on the bilinear traction–separation law in order to predict the number of cycles for initiation of delamination.

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Explaining the multiple energy thresholds for damage mechanisms activation in laminate composites under cyclic loadings

Motta

Alderliesten

Zarouchas

et al. 2023

Composites Part A: Applied Science and Manufacturing

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Fatigue delamination of composite materials – approach to exclude large scale fibre bridging

Abstract: Abstract. This paper proposes a straightforward methodology to generate fatigue delamination curves without the influence of fibre bridging using test data obtained on unidirectional double cantilever beam specimens with fibre bridging.

Cited by 8 publications

References 27 publications

Quantification Approaches for Fatigue Crack Resistance of Thermoplastic Tape Layered Composites with Multiple Delaminations

Quantification Approaches for Fatigue Crack Resistance of Thermoplastic Tape Layered Composites with Multiple Delaminations

A cohesive zone model for predicting the initiation of Mode II delamination in composites under cyclic loading

Explaining the multiple energy thresholds for damage mechanisms activation in laminate composites under cyclic loadings

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