Prediction of delamination in braided composite T-piece specimens

Chen, Jiye; Ravey, Eric; Hallett, Stephen R.; Wisnom, Michael R; Grassi, Marcello

doi:10.1016/j.compscitech.2009.01.027

Cited by 69 publications

(57 citation statements)

References 11 publications

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“…Hence, it is essential to choose an optimised viscosity parameter to obtain convincing results. A range from 110 -6 to 110 -1 was found from the literature [22,32,33]. In this study, a smaller range of the viscosity parameter between 110 -5 -110 -2 was considered.…”

Section: Guidelines Of Cohesive Parameter Selectionmentioning

confidence: 99%

Cohesive zone modelling of Mode III delamination using the edge crack torsion test

Israr¹,

Wong²,

Tamin³

2017

J. MECH. ENG. SCI.

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In the experimental studies of mode III delamination using the edge crack torsion test, the crack initiation and propagation measurement are always difficult. This information could be obtained through numerical modelling. The objective of this study is to propose a guideline to model mode III delamination behaviour using cohesive elements. Finite element models of an edge crack torsion specimen were developed based on the data from the literature. The delamination behaviour of the specimen along the pre-crack, which was located at the mid-thickness location, was modelled using cohesive elements. Through parametric studies, it was found that for reliable numerical modelling, a mesh size of 0.5 mm was suggested, which provided three elements in the cohesive zone. As for the interface strength, it was recommended to choose 80 MPa. In addition, a viscosity parameter of 110 -3 was found to be a good choice for reasonable computational time and converged numerical results. Besides, the interface stiffness was suggested to be 410 6 MPa/mm. Furthermore, the fracture process zone contour revealed that the delamination was started at a normalised location of approximately 0.7. Not only that, the fracture energy and strain distribution plots have shown the delamination was mode III dominated within the normalised distance of 0.34-0.86. The results from this study suggested that cohesive zone modelling is a useful method for the detailed analysis of the mode III delamination of an ECT specimen. The numerical modelling approach suggested from this study could be applied to ECT specimens at various different initial crack lengths. It also has the potential to be used to simulate the mode III delamination of other various types of laminated composites.

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Section: Guidelines Of Cohesive Parameter Selectionmentioning

confidence: 99%

Cohesive zone modelling of Mode III delamination using the edge crack torsion test

Israr¹,

Wong²,

Tamin³

2017

J. MECH. ENG. SCI.

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“…Several research groups have further published results of cyclic mode I delamination measurements on FRP [12,[14][15][16][17][18][19][20][21][22][23][24][25]. There are approaches for incorporating delamination properties into structural design [26] and quasi-static as well as cyclic fatigue fracture mechanics data from composite laminates have been used to predict the delamination behavior of composite structures [27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Mode I delamination fatigue crack growth in unidirectional fiber reinforced composites: Results from ESIS TC4 round-robins

Stelzer¹,

Brunner²,

Argüelles³

et al. 2014

Engineering Fracture Mechanics

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Two round robins on mode I fatigue delamination propagation organized by Technical Committee 4 of the European Structural Integrity Society compared three unidirectional carbon fiber reinforced composites, one with thermoplastic (poly-ether-ether-ketone) and two with thermoset (epoxy) matrix tested at five laboratories. Different approaches for data evaluation and their effect on the in-and inter-laboratory scatter are discussed and compared. Results are very sensitive to small scatter in the load signal, and, therefore, a new route to evaluate the crack growth rate from pairs of load and displacement data is presented.

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“…Chen et al [12] presented an approach to predict the delamination of braided carbon fiber composite T-piece specimen using cohesive models. Shahaway et al [13] studied the bending properties of T-shaped carbon fiber composite materials.…”

Section: Introductionmentioning

confidence: 99%

Bending Properties of T-Shaped 3-D Integrated Woven Composites: Experiment and FEM Simulation

Zhang

Yan

et al. 2017

JFST

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Prediction of delamination in braided composite T-piece specimens

Cited by 69 publications

References 11 publications

Cohesive zone modelling of Mode III delamination using the edge crack torsion test

Cohesive zone modelling of Mode III delamination using the edge crack torsion test

Mode I delamination fatigue crack growth in unidirectional fiber reinforced composites: Results from ESIS TC4 round-robins

Bending Properties of T-Shaped 3-D Integrated Woven Composites: Experiment and FEM Simulation

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