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Research Papers

Thermoelastic Properties of a Novel Fuzzy Fiber-Reinforced Composite

[+] Author and Article Information
M. C. Ray

e-mail: mcray@mech.iitkgp.ernet.in
Department of Mechanical Engineering,
Indian Institute of Technology,
Kharagpur 721302, India

Manuscript received August 6, 2012; final manuscript received January 15, 2013; accepted manuscript posted February 19, 2013; published online August 21, 2013. Assoc. Editor: Anthony Waas.

J. Appl. Mech 80(6), 061011 (Aug 21, 2013) (10 pages) Paper No: JAM-12-1372; doi: 10.1115/1.4023691 History: Received August 06, 2012; Revised January 15, 2013; Accepted February 19, 2013

The effective thermoelastic properties of a fuzzy fiber-reinforced composite (FFRC) have been estimated by employing the generalized method of cells approach and the Mori–Tanaka method. The novel constructional feature of this fuzzy fiber-reinforced composite is that the uniformly aligned carbon nanotubes (CNTs) are radially grown on the circumferential surface of the horizontal carbon fibers. Effective thermoelastic properties of the fuzzy fiber-reinforced composite estimated by the generalized method of cells approach have been compared with those predicted by the Mori–Tanaka method. The present work concludes that the axial thermal expansion coefficient of the fuzzy fiber-reinforced composite slightly increases for the lower values of the carbon fiber volume fraction, whereas the transverse thermal expansion coefficient of the fuzzy fiber-reinforced composite significantly decreases over those of the composite without CNTs. Also, the results demonstrate that the effect of temperature variation on the effective thermal expansion coefficients of the fuzzy fiber-reinforced composite is negligible.

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Figures

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Fig. 1

Schematic diagram of a lamina made of the fuzzy fiber-reinforced composite

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Fig. 2

Fuzzy fiber with CNTs radially grown on its surface

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Fig. 3

Transverse and longitudinal cross-sections of the composite fuzzy fiber

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Fig. 4

Modeling of the fuzzy fiber-reinforced composite and its phases

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Fig. 5

Transverse cross-sections of the composite fuzzy fiber with unwound and wound polymer matrix nanocomposite

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Fig. 6

Representative unit cell of the polymer matrix nanocomposite

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Fig. 7

Hexagonal packing array comprised of composite fuzzy fibers

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Fig. 8

Variation of the maximum CNT volume fraction with the carbon fiber volume fraction in the fuzzy fiber-reinforced composite

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Fig. 9

Variation of the axial CTE (α1PMNC) of the polymer matrix nanocomposite with the carbon fiber volume fraction in the fuzzy fiber-reinforced composite

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Fig. 10

Variation of the transverse CTE (α2PMNC) of the polymer matrix nanocomposite with the carbon fiber volume fraction in the fuzzy fiber-reinforced composite

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Fig. 11

Variation of the axial CTE (α1) of the fuzzy fiber-reinforced composite with the carbon fiber volume fraction in the fuzzy fiber-reinforced composite

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Fig. 12

Variation of the transverse CTE (α2) of the fuzzy fiber-reinforced composite with the carbon fiber volume fraction in the fuzzy fiber-reinforced composite

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Fig. 13

Variation of the axial CTE (α1) of the fuzzy fiber-reinforced composite with the temperature deviation

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Fig. 14

Variation of the transverse CTE (α2) of the fuzzy fiber-reinforced composite with the temperature deviation

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