Mechanical Behavior and Fracture Toughness Evaluation of Multiphase Polymer Nanocomposites Using Impact and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:mi>J</mml:mi></mml:mrow></mml:math>-Integral via Locus Method

Panda, Bishnu P.; Mohanty, Smita; Nayak, Sanjay K.

doi:10.1155/2013/245718

Cited by 8 publications

(3 citation statements)

References 31 publications

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“…Prior to the Izod impact test (Type A), V-shaped notches were made by using NOTCHVIS (CEAST) for the five replicate specimens of each sample having the dimensions of 70 mm × 15 mm × 3 mm as per the ASTM D256 (2010) standard [46,47] through Gotech GT-7045-MD (Taichung City, Taiwan). The notch angle had a 45° radius and the notch depth was 2.5 mm.…”

Section: Characterizationsmentioning

confidence: 99%

Evaluation of Mechanical, Physical, and Morphological Properties of Epoxy Composites Reinforced with Different Date Palm Fillers

et al. 2019

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The present study deals with the fabrication of epoxy composites reinforced with 50 wt% of date palm leaf sheath (G), palm tree trunk (L), fruit bunch stalk (AA), and leaf stalk (A) as filler by the hand lay-up technique. The developed composites were characterized and compared in terms of mechanical, physical and morphological properties. Mechanical tests revealed that the addition of AA improves tensile (20.60–40.12 MPa), impact strength (45.71–99.45 J/m), flexural strength (32.11–110.16 MPa) and density (1.13–1.90 g/cm3). The water absorption and thickness swelling values observed in this study were higher for AA/epoxy composite, revealing its higher cellulosic content, compared to the other composite materials. The examination of fiber pull-out, matrix cracks, and fiber dislocations in the microstructure and fractured surface morphology of the developed materials confirmed the trends for mechanical properties. Overall, from results analysis it can be concluded that reinforcing epoxy matrix with AA filler effectively improves the properties of the developed composite materials. Thus, date palm fruit bunch stalk filler might be considered as a sustainable and green promising reinforcing material similarly to other natural fibers and can be used for diverse commercial, structural, and nonstructural applications requiring high mechanical resistance.

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Section: Characterizationsmentioning

confidence: 99%

Evaluation of Mechanical, Physical, and Morphological Properties of Epoxy Composites Reinforced with Different Date Palm Fillers

et al. 2019

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“…Besides, there are loading configurations in which the stress-strain curve does not cover the linear elastic one [10,11]. Furthermore, the invention of new composites possessing high fracture resistance properties takes place in the last years [12][13][14]. Therefore, in all cases aforementioned, development of plastic deformations may begin before the onset of crack growth.…”

Section: Introductionmentioning

confidence: 99%

Application of J-integral for investigation of elastic–plastic fracture in single cantilever beam

Mladensky

Rizov

2015

Arch Appl Mech

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The present article is concerned with nonlinear fracture behavior of single cantilever beam made of unidirectional fiber-reinforced polymer composite. A theoretical study is performed assuming that the composite follows the stress-strain relation of an elastic-perfectly plastic material in both tension and compression. For this purpose, a model based on mechanics of materials is used. The fracture investigation is performed using path-independent J -integral where the contour of integration is chosen to coincide with the beam contour. Several closed-form analytical solutions that correspond to different ratios between crack length and beam length are obtained. It is shown that when the material nonlinearity is taken into account, an increase in J -integral value is observed. This finding is attributed to the increase in strain energy dissipation due to nonlinear deformation.Keywords Single cantilever beam · Mechanics of materials · Elastic-plastic fracture behavior · J -integral

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“…Usually, the delamination fracture is analyzed using the methods of linear‐elastic fracture mechanics the basic assumption of which is that the relation between stresses and strains is linear. However, in the case of composites possessing high delamination fracture toughness the applicability of linear‐elastic fracture mechanics is often limited by the fact that the plastic deformation occurs prior to macroscopic delamination crack growth. Therefore, the fracture analysis should take into account the material non‐linearity.…”

Section: Introductionmentioning

confidence: 99%

Non‐linear fracture study of single cantilever beam specimen

Mladensky

Rizov

2014

Z Angew Math Mech

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Key words Single cantilever beam, unidirectional fiber reinforced polymer composite, non-linear fracture behavior, J-integral.Non-linear fracture of single cantilever beam (SCB) is studied theoretically using J-integral. It is assumed that the beam is made of unidirectional fiber reinforced polymer composite which obeys the stress-strain relation of an elastic-perfectly plastic material. The lower crack arm is loaded by an external moment while the upper crack arm is stress free. Closed form analytical solutions of J-integral are found for different magnitudes of the external load corresponding to the different distribution of stresses and strains in the beam cracked and un-cracked portions. For this purpose, a mechanics of materials based model is used. The validity of the solution is proved by comparison with formula for strain energy release rate in the linear-elastic stage of the work of the material. A numerical example is presented to illustrate the influence of the material non-linearity on J-integral. It is found that the material non-linearity leads to the increase of J-integral values. This is attributed to the strain energy dissipation due to the non-linear deformation.

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Mechanical Behavior and Fracture Toughness Evaluation of Multiphase Polymer Nanocomposites Using Impact and J-Integral via Locus Method

Cited by 8 publications

References 31 publications

Evaluation of Mechanical, Physical, and Morphological Properties of Epoxy Composites Reinforced with Different Date Palm Fillers

Evaluation of Mechanical, Physical, and Morphological Properties of Epoxy Composites Reinforced with Different Date Palm Fillers

Application of J-integral for investigation of elastic–plastic fracture in single cantilever beam

Non‐linear fracture study of single cantilever beam specimen

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