Post-buckling progressive damage of CFRP laminates with a large-sized elliptical cutout subjected to shear loading

Li, Xiaole; Gao, Weicheng; Liu, Wei

doi:10.1016/j.compstruct.2015.03.038

Cited by 33 publications

(12 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several RVEs were generated such that the detailed microstructure information of fibre diameter distribution, volume fraction (60%), fibre clusters and resin pockets are representative of the real unidirectional lamina. The input material parameters are summarised in Table 1 and Table 2 [20,21]. The interface fracture energy in mode I, could not be measured experimentally but it is assumed to be in the range of 2-5 / 2 .…”

Section: Model Set-upmentioning

confidence: 99%

“…Elastic properties were calculated based on Chamis's rule of mixtures accounting for the intraply, interplay void content and resin-rich region (Table 3) [32]. Other material properties summarized in Table 4 and Table 5 were used to model the short beam bending behaviour [20]. The geometry was meshed (C3D8R) using an element size of 0.25 mm x 0.25 mm within the lamina plane and 0.05 mm in the through-thickness direction.…”

Section: Model Set-upmentioning

confidence: 99%

“…where S is the unloading stiffness, A(hc) is the contact area of indentation at the contact depth hc and  is a geometrical parameter that is taken as =1.034 for Berkovich indenters. The contact depth hc is given by: ℎ = ℎ − 0.75 (20) where P and h are the indentation load and depth, respectively. The elastic modulus of the matrix Em was determined from the reduced modulus Er:…”

Section: Matrix Propertiesmentioning

confidence: 99%

“…where E = 1141 and =0.07 [46] are the elastic modulus and Poisson ratio of the diamond indenter, respectively and the Poisson's ratio of the matrix m =0.35 [20,21]. Typical values found in the literature for epoxy resins are in the range of 40 J/m 2 and 400 J/m 2 .…”

Section: Matrix Propertiesmentioning

confidence: 99%

See 3 more Smart Citations

The role of interfacial properties on the intralaminar and interlaminar damage behaviour of unidirectional composite laminates: Experimental characterization and multiscale modelling

Tan

Naya

Yang

et al. 2018

Composites Part B: Engineering

103

View full text Add to dashboard Cite

The development of the latest generation of wide-body passenger aircraft has heralded a new era in the utilisation of carbon-fibre composite materials. One of the primary challenges facing future development programmes is the desire to reduce the extent of physical testing, required as part of the certification process, by adopting a 'certification by simulation' approach. A hierarchical bottom-up multiscale simulation scheme can be an efficient approach that takes advantage of the natural separation of length scales between different entities 2 (fibre/matrix, ply, laminate and component) in composite structures. In this work, composites with various fibre/matrix and interlaminar interfacial properties were fabricated using an autoclave under curing pressures ranging from 0 to 0.8 MPa. The microstructure (mainly void content and spatial distribution) and the mechanical properties of the matrix and fibre/matrix interface were measured, the latter by means of nano-indentation tests in matrix pockets, and fibre push-in tests. In addition, the macroscopic interlaminar shear strength was determined by means of three-points bend tests on short beams. To understand the influence of interfacial properties on the intralaminar failure behaviour, a high-fidelity microscale computational model is presented to predict homogenized ply properties under shear loading. Predicted ply material parameters are then transferred to a mesoscale composite damage model to reveal the interaction between intralaminar and interlaminar damage behaviour of composite laminates.

show abstract

Section: Model Set-upmentioning

confidence: 99%

Section: Model Set-upmentioning

confidence: 99%

Section: Matrix Propertiesmentioning

confidence: 99%

Section: Matrix Propertiesmentioning

confidence: 99%

See 2 more Smart Citations

The role of interfacial properties on the intralaminar and interlaminar damage behaviour of unidirectional composite laminates: Experimental characterization and multiscale modelling

Tan

Naya

Yang

et al. 2018

Composites Part B: Engineering

103

View full text Add to dashboard Cite

show abstract

“…Usually, the prepreg are directly applied for the FMLs. Up to now, the researches mainly focused on the processability and service performance of the T800/epoxy resin composite, ignoring the cure kinetics and quality control during the curing process [8,9]. Studies on the cure kinetics of T800/epoxy resin in FMLs are rarely relevant reported at home and abroad.…”

Section: Introductionmentioning

confidence: 99%

Study on the Cure Kinetics of Epoxy Resin Prepreg in Fiber Metal Laminates

Zhan

et al. 2016

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract. To better analysis the curing behavior of a new kind of high temperature curing epoxy resin prepreg in fiber metal laminates (FMLs), dynamic differential scanning calorimetry (DSC) method was used to make the research on the curing process of the prepreg. The characteristic temperature of curing reaction and curing kinetics parameters of epoxy resin prepreg were systematically researched, and the cure kinetics equation was built. The cure kinetics model of the epoxy resin in the prepreg was determined by autocatalytic reaction model. The results showed that the reaction activation energy of the epoxy resin was 62.178kJ/mol and the reaction orders were 0.314 and 1.2157, the total reaction order was 1.5297. The optimum curing process was set at 180 under 0.6Mpa pressure for two hours, and the interlaminar shear strength (ILSS) of FMLs result was 69.75Mpa. The model can well describe the curing behavior of the prepreg, which will provide theoretic basis for the further studies on the thermodynamic properties of epoxy resin prepreg and the quality control of fiber metal laminates during the curing process.

show abstract

Experimental and numerical investigation on three‐point bending behaviors of unidirectional warp‐knitted composites

Hong

Yan

Guo

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

This study develops a novel specimen model, which considers the progressive damage of the layers, the knitting yarns, and the interlaminar cohesive zone, to investigate the flexural properties and the interlaminar shear properties of the unidirectional warpknitted composites. Three-point bending tests are conducted as verification of the numerical model. Improved strain-based Hashin criteria are proposed to analyze the shear nonlinearity. Results show that specimens with small span-to-thickness ratios exhibit obvious nonlinear behaviors and the corresponding simulation results are sensitive to the value of the shear nonlinear factor. Failure mechanism and stress distributions are analyzed based on numerical simulations. The effect of the specimen size on bending behaviors is discussed. The influence of the width is found to be negligible but that of the span-to-thickness ratio is significant. The ranges of the span-tothickness ratio corresponding to different failure modes are given.

show abstract

Post-buckling progressive damage of CFRP laminates with a large-sized elliptical cutout subjected to shear loading

Cited by 33 publications

References 17 publications

The role of interfacial properties on the intralaminar and interlaminar damage behaviour of unidirectional composite laminates: Experimental characterization and multiscale modelling

The role of interfacial properties on the intralaminar and interlaminar damage behaviour of unidirectional composite laminates: Experimental characterization and multiscale modelling

Study on the Cure Kinetics of Epoxy Resin Prepreg in Fiber Metal Laminates

Experimental and numerical investigation on three‐point bending behaviors of unidirectional warp‐knitted composites

Contact Info

Product

Resources

About