Analytical model for prediction of strength and fracture paths characteristic to randomly oriented strand (ROS) composites

Selezneva, Marina; Roy, Suzanne; Lessard, Larry; Yousefpour, Ali

doi:10.1016/j.compositesb.2016.04.017

Cited by 55 publications

(37 citation statements)

References 12 publications

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“…All seven batches resulted in FLDs similar to Figure 2.7a. A correlation coefficient, r N , based on the Pearson correlation coefficient, can be calculated to quantify this similarity [38]. Ideally, r N would be the correlation coefficient between the FLD of batch number N and the FLD of the parent population.…”

Section: Measured-orientation Methodsmentioning

confidence: 99%

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Recycling of thermoplastic composite laminates: the role of processing

Vincent¹

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The transportation sector, aerospace and automotive in particular, is striving to reduce vehicle weight to improve fuel economy. The high specific mechanical properties of fibre-reinforced composites make them an attractive option for reaching this goal. Among this class of materials, thermoplastic composites are becoming increasingly popular due to several benefits compared to their thermoset counterparts: superior toughness, short processing times, possibility to weld components and their easier recyclability. Recent years have shown an increase in applications and a rising demand for these thermoplastic composites. This comes with the drawback of larger volumes of industrial scrap. The combination of the high value of the scrap material and legislative incentives is pushing the industry to develop recycling solutions for this material.

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Section: Measured-orientation Methodsmentioning

confidence: 99%

“…Following the comminution step, the flakes may still be multi-layered. Compression moulding these thick large flakes would result in a staggered platelets system, with short failure paths resulting in low strength [17,21,38]. On top of that, moulding complex shapes with such systems is difficult.…”

Section: Recycling Tpcs By Low-shear Mixingmentioning

confidence: 99%

Recycling of thermoplastic composite laminates: the role of processing

Vincent¹

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“…Selezneva et al [27] In addition to the analytical models described above, numerical models for TBDCs have also been developed [28,29]. These models consider either an explicit representation of the fibres/tows [29], or a discrete grid of equivalent laminates with stochastic layups [28], and use Finite Element (FE) simulations of RVEs to cope with the variability in microstructures and the complexity of stress fields.…”

Section: Operatorŝ Normalised Unit Vectormentioning

confidence: 99%

Development and assessment of modelling strategies to predict failure in tow-based discontinuous composites

Pimenta

2019

Composite Structures

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“…Based on optical micrographs taken after tensile failure, several phenomena are typically observed: transverse chip cracking, longitudinal chip splitting, chip debonding, and minor digress of fiber breakage . Selezneva et al claimed that matrix failure is the main cause of failure in tensile tests of carbon/PEEK which occurs in a form of step‐wise delamination between chips. In contrast, the observation of UT‐CTT conducted by Yamashita et al show that fiber breakage, splitting of chips and pulling out of chips are three main failure patterns in tensile fracture.…”

Section: Introductionmentioning

confidence: 99%

Correlation between failure and local material property in chopped carbon fiber chip‐reinforced sheet molding compound composites under tensile load

et al. 2018

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To develop further understanding towards the role of a heterogeneous microstructure on tensile crack initiation and failure behavior in chopped carbon fiber chip‐reinforced composites, uni‐axial tensile tests are performed on coupons cut from compression molded plaque with varying directions. Experimental results indicate that failure initiation is relevant to the strain localization, and a new criterion with the nominal modulus to predict the failure location is proposed based on the strain analysis. Furthermore, optical microscopic images show that the nominal modulus is determined by the chip orientation distribution. At the area with low nominal modulus, it is found that chips are mostly aligning along directions transverse to loading direction and/or less concentrated, while at the area with high nominal modulus, more chips are aligning to tensile direction. On the basis of failure mechanism analysis, it is concluded that transversely oriented chips or resin‐rich regions are easier for damage initiation, while longitudinally oriented chips postpone the fracture. Good agreement is found among failure mechanism, strain localization and chip orientation distribution. POLYM. COMPOS., 40:E962–E974, 2019. © 2018 Society of Plastics Engineers

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Analytical model for prediction of strength and fracture paths characteristic to randomly oriented strand (ROS) composites

Cited by 55 publications

References 12 publications

Recycling of thermoplastic composite laminates: the role of processing

Recycling of thermoplastic composite laminates: the role of processing

Development and assessment of modelling strategies to predict failure in tow-based discontinuous composites

Correlation between failure and local material property in chopped carbon fiber chip‐reinforced sheet molding compound composites under tensile load

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