Experimental and finite element analysis of mechanical and fracture behavior of SiC particulate filled A356 alloy composites: Part I

Kukshal, Vikas; Gangwar, Swati; Patnaik, Amar

doi:10.1177/1464420713499513

Cited by 11 publications

(6 citation statements)

References 34 publications

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“…Usually an idealised filler geometry is assumed such as circles and ellipsoids in 2D or spheres and spheroids in 3D [41], [42], [43], [44]. To investigate this assumption, an image based mesh generation algorithm was used [45] to generate a 2D mesh of the actual composite geometry by representing the TATB crystals as a set of polygons.…”

Section: Mesh Generationmentioning

confidence: 99%

Modelling the damage and deformation process in a plastic bonded explosive microstructure under tension using the finite element method

Arora

Tarleton

Li-Mayer

et al. 2015

Computational Materials Science

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Modelling the deformation and failure processes occurring in polymer bonded explosives (PBX) and other energetic materials is of great importance for processing methods and lifetime storage purposes. Crystal debonding is undesirable since this can lead to contamination and a reduction in mechanical properties. An insensitive high explosive (PBX-1) was the focus of the study. This binary particulate composite consists of (TATB) filler particles encapsulated in a polymeric binder (KELF800). The particle/matrix interface was characterised with a bi-linear cohesive law, the filler was treated as elastic and the matrix as visco-hyperelastic. Material parameters were determined experimentally for the binder and the cohesive parameters were obtained previously from Williamson et al. (2014) and Gee et al. (2007) for the interface. Once calibrated, the material laws were implemented in a finite element model to allow the macroscopic response of the composite to be simulated. A finite element mesh was generated using a SEM image to identify the filler particles which are represented as a set of 2D polygons. Simulated microstructures were also generated with the same size distribution and volume fraction only with the idealised assumption that the particles are a set of circles in 2D and spheres in 3D. The various model results were compared and a number of other variables were examined for their influence on the global deformation behaviour such as strain rate, cohesive parameters and contrast between filler and matrix modulus. The overwhelming outcome is that the geometry of the particles plays a crucial role in determining the onset of failure and the severity of fracture in relation to whether it is a purely local or global failure. The model was validated against a set of uniaxial tensile tests on PBX-1 and it was found that it predicted the initial modulus and failure stress and strain well.

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Section: Mesh Generationmentioning

confidence: 99%

Modelling the damage and deformation process in a plastic bonded explosive microstructure under tension using the finite element method

Arora

Tarleton

Li-Mayer

et al. 2015

Computational Materials Science

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“…The porosity increases as the weighting percentage of particles increases. In [21] it was found that the porosity content of the Al composites varied from 1.01% to 2.69% with the increased SiC wt % from 0% to 25%. A parametric study was performed, where a similar increase-relationship between the amount of porosity and the content of SiC particles is maintained; where the porosity increases as the volume fraction of reinforcement do.…”

Section: Porous Al-matrix and Pore-free Sic Particlementioning

confidence: 99%

“…However, in this study the porosity effect was not included in the numerical model, instead, it analyzed with the (R-A) analytical model. MMC porosity arises generally by causes of gas entrapment and the evolution of dissolved gases [21]. Although the porosity in MMC can be diminished, its existence is unavoidable [22].…”

Section: Introductionmentioning

confidence: 99%

Simulation on the Effect of Porosity in the Elastic Modulus of SiC Particle Reinforced Al Matrix Composites

Rivera-Salinas¹,

Gregorio‐Jáuregui

Romero‐Serrano

et al. 2020

Metals

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Although the porosity in Al-SiC metal matrix composites (MMC) can be diminished; its existence is unavoidable. The purpose of this work is to study the effect of porosity on Young's modulus of SiC reinforced aluminum matrix composites. Finite element analysis is performed based on the unit cell and the representative volume element approaches. The reliability of the models is validated by comparing the numerical predictions against several experimental data ranging in lowand high-volume fractions and good agreement is found. It is found that despite the stress transfer from the soft matrix to the reinforcement remains effective in the presence of pores, there is a drop in the stress gathering capability of the particles and thus, the resulting effective elastic modulus of composite decreases. The elastic property of the composite is more sensitive to pores away the reinforcement. It is confirmed, qualitatively, that the experimentally reported in the literature decrease in the elastic modulus is caused by the presence of pores.

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“…w Al is the weight fraction of pure aluminum. This rule of mixture was used to calculate theoretical density, and actual density was calculated using the Archimedes principle [31].…”

Section: Physical and Mechanical Characterization 231 Void Contentmentioning

confidence: 99%

Mechanical and corrosion behavior of SiC/Graphite/ZrO₂hybrid reinforced aluminum-based composites for marine environment

Yadav

Gangwar

Yadav

et al. 2021

Surf. Topogr.: Metrol. Prop.

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Marine conditions are highly contentious for most materials manifested by the decayed condition of old ships and wrecks (made up of steel/wood). This work investigates the mechanical and corrosion behavior of aluminum-based composites reinforced with 3, 6, and 9 wt% of hybrid reinforcements (SiC, graphite, and ZrO2). It was observed that 3 wt% reinforcement composite had the optimum mechanical properties along with minimum corrosion rate. This composition had the least void contents, and its micro-hardness increased by 27.5% (42.6 VHN) in comparison to that of the unreinforced Al (33.3 VHN). Impact strength of the composite increased by 27.2% for 6 wt% hybrid reinforcement (247.1 J) and then started decreasing, whereas tensile strength of the composite increased by 8% for 9 wt% hybrid reinforcement (124.0 MPa) with respect to that of pure Al. The flexural strength of the pure Al reduced with the addition of hard reinforcing particles. The corrosion behavior of the composite was analyzed in 3.5% NaCl solution (simulating the seawater condition) at room temperature with the help of Tafel polarization curve and scanning electron microscopy (SEM) micrographs. It revealed that the 3% reinforced composite had the minimum corrosion current density (0.4 μA) and corrosion rate (0.23 mpy) compared to those of pure Al. The surface morphology of corrosion tested samples indicated the pitting corrosion mechanism.

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Experimental and finite element analysis of mechanical and fracture behavior of SiC particulate filled A356 alloy composites: Part I

Cited by 11 publications

References 34 publications

Modelling the damage and deformation process in a plastic bonded explosive microstructure under tension using the finite element method

Modelling the damage and deformation process in a plastic bonded explosive microstructure under tension using the finite element method

Simulation on the Effect of Porosity in the Elastic Modulus of SiC Particle Reinforced Al Matrix Composites

Mechanical and corrosion behavior of SiC/Graphite/ZrO₂hybrid reinforced aluminum-based composites for marine environment

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Experimental and finite element analysis of mechanical and fracture behavior of SiC particulate filled A356 alloy composites: Part I

Cited by 11 publications

References 34 publications

Modelling the damage and deformation process in a plastic bonded explosive microstructure under tension using the finite element method

Modelling the damage and deformation process in a plastic bonded explosive microstructure under tension using the finite element method

Simulation on the Effect of Porosity in the Elastic Modulus of SiC Particle Reinforced Al Matrix Composites

Mechanical and corrosion behavior of SiC/Graphite/ZrO2hybrid reinforced aluminum-based composites for marine environment

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Mechanical and corrosion behavior of SiC/Graphite/ZrO₂hybrid reinforced aluminum-based composites for marine environment