Investigation of combined stress state failure criterion for glass fiber/epoxy interface by the cruciform specimen method

Ogihara, Shinji; Koyanagi, Jun

doi:10.1016/j.compscitech.2009.10.002

Cited by 103 publications

(41 citation statements)

References 20 publications

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“…In the present study, without any inconsistencies with conventional studies [9, 14-17, 19, 21], it is found that the time-dependent interfacial failure evolution and load recovery profile of failure fiber in the single-fiber composite can be simulated by applying the quasi-parabolic failure criterion. This result simultaneously leads that the parabolic criterion can be more appropriate than the quadratic criterion for interface failure; although Ogihara et al [30] did not discuss which criterion is better for interface failure criterion. Thus, it can be suggested that an interfacial failure surface plot, like Fig.…”

Section: Numerical Results and Discussionmentioning

confidence: 90%

“…As shown in Figs. 7 (G IIc =1.0 N/m) and 9, the analytical [30] is chosen, employing an empirical degradation interface element can potentially lead a reasonable analytical result as well as in this study. But the empirical degradation element would not agree with the results of the existing article [17] in which it is reported the interfacial time-dependency is negligible or small.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

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A Numerical Simulation of Time-Dependent Interface Failure Under Shear and Compressive Loads in Single-Fiber Composites

et al. 2009

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We performed a numerical simulation of a time-dependent interfacial failure accompanied by a fiber failure, and examined their evolution under shear and compressive loads in single-fiber composites. The compressive load on the interface consists of Poisson's contraction for matrix resin subjected to longitudinal tensile load. As time progresses, compressive stress at the interface in the fiber radial direction relaxes under the constant longitudinal tensile strain condition for the specimen, directly causing the relaxation of the interface frictional stress. This relaxation facilitates the failure of the interface. In this analysis, a specific criterion for interface failure is applied; apparent interfacial shear strength is enhanced by compressive stress, which is referred as quasiparabolic criterion in the present study. The results of the stress recovery profile around the fiber failure and the interfacial debonding length as a function of time simulated by the finite element analysis employing the criterion are very similar to experimental results obtained using micro-Raman spectroscopy.

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Section: Numerical Results and Discussionmentioning

confidence: 90%

Section: Numerical Results and Discussionmentioning

confidence: 99%

A Numerical Simulation of Time-Dependent Interface Failure Under Shear and Compressive Loads in Single-Fiber Composites

et al. 2009

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“…These articles present the interfacial failure envelope under combined stresses, obtained using a cruciform specimen test in which the off-load axis is varied to create various normal/shear stress ratios. An earlier study [63] solved the important problem of the unclear microscopic location of interfacial failure initiation using a novel method. However, the failure envelope remains partially indeterminable considering the following points.…”

Section: Analysis Of Single Fiber Tensile Strengthmentioning

confidence: 99%

CNT-Based Inherent Sensing and Interfacial Properties of Glass Fiber-Reinforced Polymer Composites

Wang

Kwon

et al. 2015

Handbook of Polymer Nanocomposites. Processing, Performance and Application

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“…When using the contact softening model to represent the fibre/matrix interface, both interfacial strength and fracture energy must be known. Unfortunately, these properties are difficult to obtain from simple laboratory experiments [35]. In this study, the interfacial strength is assumed to be equal to the cohesion of the matrix, c, and according to the Mohr-Coulomb failure criterion the relationship between the cohesion and matrix strength is given by: sin cos (25) where is the friction angle and can be related to the fracture surface angle by:…”

Section: Parametric Study Of Bond Strengthmentioning

confidence: 99%

“…The fracture angle plane in the case of biaxial loading is slightly different from that for uniaxial compression in Eq. (26) and given by: (35) in which arctan . Note that in case of uniaxial loading, 23 =0, Eq.…”

Section: Dem Prediction Of the Failure Envelopementioning

confidence: 99%

A DEM model for visualising damage evolution and predicting failure envelope of composite laminae under biaxial loads

Ismail

Yang

2016

Composites Part B: Engineering

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A two dimensional particle model based on the discrete element method (DEM) is developed for micromechanical modelling of fibre reinforced polymer (FRP) composite laminae under biaxial transverse loads. Random fibre distribution within a representative volume element (RVE) is considered for the micromechanical DEM simulations. In addition to predicting the stress-strain curves of the RVEs subjected to transverse compression and transverse shear stresses against the experimental testing results and other numerical modelling results, the DEM model is also able to capture the initiation and propagation of all micro damage events. Fibre distribution is found to more significantly influence the ultimate failure of composite laminae under transverse shear, while it has much less effect on the failure under transverse compression. The failure envelope of composite laminae under biaxial transverse compression and transverse shear is predicted and compared with Hashin and Puck failure criteria, showing a reasonable agreement. The predicted failure envelope is correlated with the damage evolution and the quantitative analysis of failure events, which improves the understanding of the failure mechanisms.

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Investigation of combined stress state failure criterion for glass fiber/epoxy interface by the cruciform specimen method

Cited by 103 publications

References 20 publications

A Numerical Simulation of Time-Dependent Interface Failure Under Shear and Compressive Loads in Single-Fiber Composites

A Numerical Simulation of Time-Dependent Interface Failure Under Shear and Compressive Loads in Single-Fiber Composites

CNT-Based Inherent Sensing and Interfacial Properties of Glass Fiber-Reinforced Polymer Composites

A DEM model for visualising damage evolution and predicting failure envelope of composite laminae under biaxial loads

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