Fracture behaviour of triaxial braided composites and its simulation using a multi-material shell modelling approach

García-Carpintero, A.; Beuken, B.N.G. van den; Haldar, Sandip; Herráez, M.; González, C.; Lopes, C.S.

doi:10.1016/j.engfracmech.2017.08.034

Cited by 20 publications

(11 citation statements)

References 33 publications

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“…Hence, the compliance curves ( Figure 3), C(a) = d/P c , were determined from the experimental response of the specimens using the instantaneous values of the critical load to cause fracture progression (P c ), corresponding displacements (d) and crack lengths (a). The compliance with respect to crack length was described using the relation [22,23]:…”

Section: Crack Resistance Characteristicsmentioning

confidence: 99%

Relations between intralaminar micromechanisms and translaminar fracture behavior of unidirectional FRP supported by experimental micromechanics

Haldar

Herráez

Naya

et al. 2019

Composites Part B: Engineering

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The translaminar fracture behaviors of partially different unidirectional composite systems, constituted by the same carbon fibers but different (thermoset vs. thermoplastic) matrices, were characterized by means of compact tension fracture tests. The resulting crack resistance curves (R-curves) and fracture surfaces, were studied in detail and found to be rather different between those material systems, in spite of the same reinforcing fibers at similar volume fractions. In the attempt to justify this difference, the effects of the underlying micromechanisms were evaluated by employing experimental micromechanical measurements of the fracture characteristics of fibers, matrices and fiber/matrix interfaces. By means of a thorough analysis and quantification of the micromechanisms that contribute to the work of fracture, it was possible to decompose the translaminar fracture toughness of the composites into different contributions. Independently of the material considered, fibre bundle pull-out was found to be the mechanism that dissipates the highest amount of energy. Different patterns of bundle pull-out in different material systems were found to be the result of different outcomes from the competition of fracture micromechanims, and to be responsible for the differences between the translaminar fracture energies of both material systems. Moreover, it was realized that the energy dissipated in bundle pull-out, hence also the overall measured translaminar fracture toughness are strongly governed by in-situ effects, i.e. effects of specimen lamination features.

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Section: Crack Resistance Characteristicsmentioning

confidence: 99%

Relations between intralaminar micromechanisms and translaminar fracture behavior of unidirectional FRP supported by experimental micromechanics

Haldar

Herráez

Naya

et al. 2019

Composites Part B: Engineering

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“…The insertion of woven fabric plies or interleaves in composite laminates has been shown to delay the initiation of transverse cracking 28 . During the last two decades, many analytical and numerical models have been developed to predict the mechanical properties and failure behavior of woven composites 29–31 . Li et al 32 used a finite element (FE) failure model to study the formation of multiple cracks in a ceramic woven composite based on a criterion that the couples stress and energy conditions to predict the initiation and the propagation of cracks within the framework of finite fracture mechanics.…”

Section: Introductionmentioning

confidence: 99%

In situ strength analysis of cross‐ply composite laminates containing defects and interleaved woven layer using a computational micromechanics approach

Rafie

Madadi

Farrokhabadi

et al. 2021

Fatigue Fract Eng Mat Struct

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The transverse strength of 90° plies located in cross‐ply laminates subjected to transverse tension is investigated numerically. To reach this aim, it is assumed that the transverse cracking is formed by coalescence of fiber–matrix debonding, which propagates along the planes parallel to the fibers. The two‐dimensional finite element model (FEM) investigates the dominant micromechanical damage mechanisms, fiber–matrix debonding, and matrix cracking using the cohesive zone model (CZM) and plasticity, respectively. The numerical simulation is according to the extended computational micromechanics (ECMM) approach, which can be applied as a useful virtual test method instead of performing costly characterization tests. The results obtained from the present study show that the defects such as voids, imperfections, and residual stresses contribute to reducing the in situ strength of 90° plies. In the case of using an interleaved woven layer, the formation of the first transverse crack in unit cells within 90° layer is delayed.

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“…Although numerous efforts have focused on the mechanical properties and failure modes of triaxial braided composites [9][10][11][12][13][14], a few studies have investigated their impact behavior [15,16]. During impact events, a remarkable strain rate effect at high loading rate is reported in composite materials [17].…”

Section: Introductionmentioning

confidence: 99%

The Influences of Projectile Material and Environmental Temperature on the High Velocity Impact Behavior of Triaxial Braided Composites

et al. 2021

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Two-dimensional (2D) triaxial braided composites with braiding angle (± 60°/0°) have been used as aero-engine containing casing material. In the current paper, three types of projectile with the same mass and equivalent diameter, including cylinder gelatin projectile, carbon fiber-reinforced plastics (CFRP), and titanium alloy blade-like projectile, were employed to impact on triaxial braided composites panels with thickness of 4.3 mm at room temperature (20 °C) to figure out the influences of projectile materials on the damage pattern and energy absorption behavior. Furthermore, the influences of environmental temperature were also discussed considering the aviation service condition by conducting ballistic impact tests using CFRP projectile at cryogenic temperature (−50 °C) and high temperature (150 °C). The triaxial braided target panel were pre-heated or cooled in a low-temperature chamber before mounted. It is found that soft gelatin project mainly causes global deformation of the target and therefore absorb much more energy. The triaxial braided composite absorb 77.59% more energy when impacted with CFRP projectile than that with titanium alloy projectile, which mainly results in shear fracture. The environmental temperature has influences on the damage pattern and energy absorption of triaxial braided composites. The cryogenic temperature deteriorates the impact resistance of the triaxial braided composite material with matrix cracking damage pattern, while high temperature condition improves its impact resistance with shearing fracture damage pattern.

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Fracture behaviour of triaxial braided composites and its simulation using a multi-material shell modelling approach

Cited by 20 publications

References 33 publications

Relations between intralaminar micromechanisms and translaminar fracture behavior of unidirectional FRP supported by experimental micromechanics

Relations between intralaminar micromechanisms and translaminar fracture behavior of unidirectional FRP supported by experimental micromechanics

In situ strength analysis of cross‐ply composite laminates containing defects and interleaved woven layer using a computational micromechanics approach

The Influences of Projectile Material and Environmental Temperature on the High Velocity Impact Behavior of Triaxial Braided Composites

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