Progressive damage modeling in carbon fibers/carbon nanotubes reinforced polymer composites

Tarfaoui, Mostapha; Moumen, A. El; Lafdi, Khalid

doi:10.1016/j.compositesb.2016.12.056

Cited by 82 publications

(48 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Influence of particle aspect ratio and ability to aggregate... nanotubes) are of special interest to both theoretical and applied science because the use of carbon nanotubes allows changing electrical conductivity in a wide range of values and improving mechanical characteristics of polymer matrices (Kymakis et al 2002;Moskalyuk et al 2012;Tarfaoui et al 2017).…”

Section: Introductionmentioning

confidence: 99%

“…1). According to this theory, each point of the space corresponds to electrical conductivity σ = σ f with the probability p = ϑ f and to electrical conductivity σ = σ m with the probability 1 -p. Here, ϑ f is the fraction of conducting particles in the bulk of the polymer matrix; σ is electrical conductivity; and the indices f and m denote the filler and the matrix, respectively (Kinloch et al 2018;Moskalyuk et al 2012;Tarfaoui et al 2017). The percolation threshold in this case is equal to the minimum fraction of the space occupied by conducting regions at which the system is still conducting (Kinloch et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…In the case of a polymer composite filled with anisotropic electrically conductive fillers (e. g., carbon nanotubes), the conductive cluster may consist of randomly oriented anisometric particles (fibers, cylinders). Electrical conductivity of such a polymer composite is always anisotropic (Kinloch et al 2018;Kymakis et al 2002;Moskalyuk et al 2012;Tarfaoui et al 2017). Polymer composites filled with anisotropic fillers usually have a considerably lower percolation threshold than polymer composites filled with spherical or spheroidal particles.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of particle aspect ratio and ability to aggregate on electrical conductivity of fiber-forming polymer composites

Tsobkallo

Moskalyuk

Yudin

et al. 2020

Physics of Complex Systems

View full text Add to dashboard Cite

Fiber-forming polymer composites filled with carbon nanoparticles of three types (carbon black is a spherical filler; carbon nanofibers and carbon nanotubes are anisotropic nanoparticles) were produced by melt technology. Electrical conductivity of the fiber-forming polymer composites was measured; a function of the filler concentration and the percolation thresholds were determined. It was found that an increase in the aspect ratio of carbon nanoparticles leads to a decrease in the percolation threshold. The correlation between the axial ratio, stiffness, filler concentration and electrical conductivity of the percolation cluster in fiber-forming polymer composites was analysed.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of particle aspect ratio and ability to aggregate on electrical conductivity of fiber-forming polymer composites

Tsobkallo

Moskalyuk

Yudin

et al. 2020

Physics of Complex Systems

View full text Add to dashboard Cite

show abstract

“…Composite materials, despite having better physical properties, are not exempt from limitations and drawbacks [1][2][3][4]. The mechanisms of damage initiation and propagation leading to ultimate fracture in these materials are very complex but very well established [5][6][7][8][9][10][11]. Structural health monitoring (SHM) is a well-known technique to examine the mechanical behavior of the structure during operation and to avoid its sudden failure [12].…”

Section: Introductionmentioning

confidence: 99%

Nanotechnology and Development of Strain Sensor for Damage Detection

Qureshi¹,

Tarfaoui²,

Lafdi³

et al. 2019

Advances in Structural Health Monitoring

View full text Add to dashboard Cite

Composite materials, having better properties than traditional materials, are susceptible to potential damage during operating conditions, and this issue is usually not found until it is too late. Thus, it is important to identify when cracks occur within a structure, to avoid catastrophic failure. The objective of this chapter is to fabricate a new generation of strain sensors in the form of a wire/thread that can be incorporated into a material to detect damage before they become fatal. This microscale strain sensor consists of flexible, untwisted nylon yarn coated with a thin layer of silver using electroless plating process. The electromechanical response of this sensor wire was tested experimentally using tensile loading and then verified numerically with good agreement in results. This flexible strain sensor was then incorporated into a composite specimen to demonstrate the detection of damage initiation before the deformation of structure becomes fatal. The specimens were tested mechanically in a standard tensometer machine, while the electrical response was recorded. The results were very encouraging, and the signal from the sensor was correlated perfectly with the mechanical behavior of the specimen. This showed that these flexible strain sensors can be used for in situ structural health monitoring (SHM) and real-time damage detection applications.

show abstract

“…CFs can have good thermal and electrical conductivities, and excellent creep resistance [5,6]. They have been utilized in many applications, such as aerospace [7], highway transportation [8], military [9], turbine blades [10], construction [11], energy conversion and storage [12], and self-sensing devices [13]. CFs can be fabricated using polymeric precursors, such as acrylic, cellulosic, pitch, and polyacrylonitrile (PAN) precursors [2,14,15] by subsequent heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Carbon Nano-Fibers with Improved Oxidation Resistance

Al-Ajrash

Lafdi

2019

Ceramics

View full text Add to dashboard Cite

Hybrid Carbon-Silicon Carbide (C-SiC) nano-fibers were fabricated while using a mixture of polyacrylonitrile (PAN) and silicon (Si) nanoparticles as precursors. The microstructure of the material was examined using X-ray diffraction and Raman spectroscopy as a function of processing temperature and holding time. A complete transformation of Si to SiC occurred at 1250 • C. However, for heat treatments below 1000 • C, three distinct phases, including Si, C, and SiC were present. The effect of microstructural changes, due to the heat treatment, on oxidation resistance was determined using thermogravimetric analysis (TGA). Furthermore, the char yield showed exponential growth with increasing the carbonization temperature from 850 • C to 1250 • C. The holding times at higher temperatures showed a significant increase in thermal properties because of SiC grain growth. At longer holding times, the SiC phase has the function of bothcoating and reinforcing phase. Such structural changes were related to fibers mechanical properties. The tensile strength was the highest for fiber carbonized fibers at 850 • C, while the modulus increased monotonically with increasing carbonization temperature.

show abstract

Progressive damage modeling in carbon fibers/carbon nanotubes reinforced polymer composites

Cited by 82 publications

References 40 publications

Influence of particle aspect ratio and ability to aggregate on electrical conductivity of fiber-forming polymer composites

Influence of particle aspect ratio and ability to aggregate on electrical conductivity of fiber-forming polymer composites

Nanotechnology and Development of Strain Sensor for Damage Detection

Hybrid Carbon Nano-Fibers with Improved Oxidation Resistance

Contact Info

Product

Resources

About