Finite element analysis of failure mechanisms in HDPE/CaCo<sub>3</sub>particulate composite

Arbabi, Nasser; Anbardan, S. A. Miri.; Hassanifard, Soran

doi:10.1179/1743289814y.0000000098

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…The mechanical behavior is characterized by three regions: i) linear elastic, ii) damage initiation, and iii) damage evolution. The elastic properties define the initial tract, while damage initiation in the XFEM enriched region is set by the critical maximum principal stress criterion (MAXPS), similarly to other previous studies on fiber-composites 47,64,65 . According to MAXPS, initiation occurs when the maximum principal stress, σ n reaches a critical value, (i.e.…”

Section: Methodsmentioning

confidence: 99%

Bone-inspired enhanced fracture toughness of de novo fiber reinforced composites

Libonati

Vellwock

Ielmini

et al. 2019

Sci Rep

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Amplification in toughness and balance with stiffness and strength are fundamental characteristics of biological structural composites, and a long sought-after objective for engineering design. Nature achieves these properties through a combination of multiscale key features. Yet, emulating all these features into synthetic de novo materials is rather challenging. Here, we fine-tune manual lamination, to implement a newly designed bone-inspired structure into fiber-reinforced composites. An integrated approach, combining numerical simulations, ad hoc manufacturing techniques, and testing, yields a novel composite with enhanced fracture toughness and balance with stiffness and strength, offering an optimal lightweight material solution with better performance than conventional materials such as metals and alloys. The results also show how the new design significantly boosts the fracture toughness compared to a classic laminated composite, made of the same building blocks, also offering an optimal tradeoff with stiffness and strength. The predominant mechanism, responsible for the enhancement of fracture toughness in the new material, is the continuous deviation of the crack from a straight path, promoting large energy dissipation and preventing a catastrophic failure. The new insights resulting from this study can guide the design of de novo fiber-reinforced composites toward better mechanical performance to reach the level of synergy of their natural counterparts.

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Section: Methodsmentioning

confidence: 99%

Bone-inspired enhanced fracture toughness of de novo fiber reinforced composites

Libonati

Vellwock

Ielmini

et al. 2019

Sci Rep

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show abstract

“…The result shows that some of the tensile properties of the sample prove that the particle size influences the deformation and failure processes in the blends. On the other hand, Arbabi et al [17] investigated the failure mechanism in HDPE/CaCo 3 particulate composite using the finite element analysis. In their study, they reported that the energy release rate and interfacial adhesion strength increases when increasing the particle size.…”

Section: Introductionmentioning

confidence: 99%

Effects of chicken eggshell filler size on the processing, mechanical and thermal properties of PVC matrix composite

Murugan

Munusamy

Ismail

2017

Plastics, Rubber and Composites

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The effects of filler particle size of poly(vinyl chloride)/chicken eggshell powder (PVC/ESP) composites on the processing, tensile properties, morphology and thermal degradation were investigated. The mixing of composites was done using Rheomix internal mixer. The processing torque of PVC/ESP composite at a particle of 0.2 μm exhibits lower processing torque compared to that at a particle size of 7 μm due to the dispersive resistance from larger ESP filler particles. Good interfacial adhesion exists between the filler and matrix in composites prepared via a filler particle size of 0.2 μm, which has improved the tensile strength and modulus of PVC/ESP composite compared to a filler particle size of 7 μm as justified from FESEM images on the tensile fracture surface of the composites. Thermogravimetric analysis results show that the filler particle size of 0.2 μm composite exhibits higher thermal stability compared to the filler particle size of 7 μm composite.

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A multiscale XFEM approach to investigate the fracture behavior of bio-inspired composite materials

Vellwock

Vergani

Libonati

2018

Composites Part B: Engineering

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8In the setting of emerging approaches for material design, we investigate the use of 9 extended finite element method (XFEM) to predict the behavior of a newly designed bone-10 inspired fiber-reinforced composite and to elucidate the role of the characteristic 11 microstructural features and interfaces on the overall fracture behavior. The outcome of the 12 simulations, showing a good agreement with the experimental results, reveals the 13 fundamental role played by the heterogeneous microstructure in altering the stress field, 14 reducing the stress concentration at the crack tip, and the crucial role of the interface region 15 (i.e. cement line) in fostering the activation of characteristic toughening mechanisms, thus 16 increasing the overall flaw tolerance of the composite.17 18 Keywords: 19 B. Fracture 20 C. Numerical analysis; Computational modeling; 21 XFEM (Extended Finite Element Method) 22 23 24 M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 2 2 of ideal design, being simultaneously lightweight, stiff, strong and tough. Examples are 3 bone, which provides supports to many animal bodies, nacre and seashells, working as 4 natural body armors and providing protection from external predators' attacks, bamboo, 5 whose gradient structure guarantees an augmented flexural rigidity, enabling protection 6 from crosswind and gravity. Ancient but ever-intriguing, these materials are paradigms of 7 natural structural composites, made of few universal constituents and achieving -through a 8 sophisticated design -a unique combination of mechanical properties, bypassing the trade-9 off faced by synthetic engineering materials [1]. Traditional structural materials, indeed, 10 continuously face a typical engineering issue of satisfying both strength and toughness 11 requirements. For instance, ceramics provide high strength with a low toughness, whereas 12 steel and metals have high toughness and a limited strength. Composites often represent a 13 good compromise, being lightweight and stiff and offering a good balance with strength-14 toughness [2]. In particular, fiber-reinforced composites, which present the highest 15 stiffness-to-weight and strength-to-weight ratio, represent an attractive solution for 16 structural applications where the weight is a crucial aspect (e.g. automotive and aerospace) 17 [3-5]. However, they often fail in a brittle way. Enhancing the fracture toughness, by 18 promoting larger energy release before failure, will increase the intrinsic safety of such 19 materials, also fostering their adoption for diverse structural applications. 20 Drawing inspiration from nature can offer a path towards enhancing their resistance 21 to fracture. Bone, in particular, may represent an excellent biomimetic model for novel 22 composite design. Bone is a lightweight strong and tough natural composite made of 23 M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 3 hydroxyapatite mineral crystals, providing stiffness and strength, interspersed into an 1 organic matrix (mainly made of collagen) th...

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Finite element analysis of failure mechanisms in HDPE/CaCo₃particulate composite

Cited by 3 publications

References 31 publications

Bone-inspired enhanced fracture toughness of de novo fiber reinforced composites

Bone-inspired enhanced fracture toughness of de novo fiber reinforced composites

Effects of chicken eggshell filler size on the processing, mechanical and thermal properties of PVC matrix composite

A multiscale XFEM approach to investigate the fracture behavior of bio-inspired composite materials

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Finite element analysis of failure mechanisms in HDPE/CaCo3particulate composite

Cited by 3 publications

References 31 publications

Bone-inspired enhanced fracture toughness of de novo fiber reinforced composites

Bone-inspired enhanced fracture toughness of de novo fiber reinforced composites

Effects of chicken eggshell filler size on the processing, mechanical and thermal properties of PVC matrix composite

A multiscale XFEM approach to investigate the fracture behavior of bio-inspired composite materials

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Finite element analysis of failure mechanisms in HDPE/CaCo₃particulate composite