Effects of Fiber Orientation and Elastic Constants on Coefficients of Thermal Expansion in Laminates

Zhu, Rujian; Sun, C. T.

doi:10.1080/15376490306733

Cited by 19 publications

(8 citation statements)

References 2 publications

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“…For example, Sauder et al [10], Rupnowski et al [11] and Pradere et al [12,13] studied the CTEs of carbon fiber in a wide temperature range, which showed that the effective longitudinal and transverse CTEs of carbon fibers almost maintained stable during the temperatures from room temperature to 300 ℃. However, the fiber orientation angle [14,15] may have a remarkable effect on the thermal expansion behaviors of UD composites. Due to the high temperature sensitivity of epoxy resin, its CTE may have a significant effect on the final thermal expansion behaviors of carbon fiber/epoxy composites.…”

Section: Introductionmentioning

confidence: 99%

A mesoscale study of thermal expansion behaviors of epoxy resin and carbon fiber/epoxy unidirectional composites based on periodic temperature and displacement boundary conditions

et al. 2016

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The thermal expansion behaviors of neat epoxy resin and carbon fiber/epoxy unidirectional (UD) composites were experimentally and numerically studied in this paper. The dynamic mechanical analysis (DMA), thermogravimetric analysis (TG), differential scanning calorimetry (DSC) and thermal conductivity measurement were used to measure the thermo-mechanical properties of epoxy resin at different temperatures. The dilatometer was used to measure the thermal strains and linear CTEs of neat epoxy resin and UD composites. In addition, a mesoscale finite element model based on the periodic temperature and displacement boundary conditions was presented to analyze the thermal expansion behaviors of UD composites. The resin-voids representative volume element (RVE) was used to calculate the thermo-mechanical properties of several kinds of resin-voids mixed matrix. From the results it can be found that the glass transition temperature of epoxy resin, porosity and fiber orientation angle have significant effects on the thermal expansion behaviors of UD composites. The mesoscale finite element analyses (FEA) have obvious advantages than various existing analysis models by comparing their predictive results. The distributions of thermal displacement, thermal stress and thermal strain were extracted between the carbon fiber, resin-voids mixed matrix and their interface, and also between the front and back surfaces of the loading direction, to further investigate thermal expansion structure effects of UD composites. This paper revealed that the mesoscale FEA based on periodic temperature and displacement boundary conditions can be also used for thermal expansion researches of other complex structure composites.

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Section: Introductionmentioning

confidence: 99%

A mesoscale study of thermal expansion behaviors of epoxy resin and carbon fiber/epoxy unidirectional composites based on periodic temperature and displacement boundary conditions

et al. 2016

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“…Consider next, inspired by the volume segmentation technique by Kueh [ 2 ], a series of singular and laminated double-yarn model units, as observed from the distribution of the stacking sequence of materials available in the TWFC unit cell. The composite CTE formulated from these model units can be defined by participation and represented as

where m i is the ratio of considered model unit i to that of the total in the TWFC unit cell such that [ 21 ]

In Equation (9) , t is the yarn thickness and [ A ] is the extensional rigidity matrix from the standard laminate theory ABD mechanical description matrix [ 22 ], which is expressed as

alongside the transformation matrix

and the lamina locally-defined mechanical properties

c and s are cos( θ ) and sin( θ ), respectively, for the yarn orientation. The model units include [0/60], [-60/0], [60/-60], [0], and [60] segments [ 1 , 2 ].…”

Section: Analytical and Numerical Computational Modelsmentioning

confidence: 99%

Thermally-induced responses of triaxially woven fabric composites

Kueh

2023

Heliyon

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“…As pointed out in references [12] and [15], a null thermal expansion laminate can be designed simply by considering an angle-ply laminate with u corresponding to the point where a x (u) vanishes. As in this case the derivative da x (u)/ du is high (see Fig.…”

Section: Proposed Proceduresmentioning

confidence: 99%

Design of composite laminates with low thermal expansion

Bressan

Bona

Somà³

2004

Proc. Instn Mech. Engrs, Part L: J. Mat

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A procedure for the design of structural elements made of carbon-epoxy laminates with low thermal expansion in the main direction has been developed. By using an interferometric technique, the influence of material characteristics and process parameters on the thermal expansion behaviour was assessed. In order to minimize the interval of uncertainty of the thermal expansion coefficient, using the lamination theory, a laminate with layers at 08 and 308 coupled with layers with an orientation chosen between 458 and 608 was proposed. Prototypes were constructed following a standard manufacturing process. Interferometric measurements were performed, showing that the proposed procedure permits a low thermal expansion with a reduced uncertainty to be achieved.

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Effects of Fiber Orientation and Elastic Constants on Coefficients of Thermal Expansion in Laminates

Cited by 19 publications

References 2 publications

A mesoscale study of thermal expansion behaviors of epoxy resin and carbon fiber/epoxy unidirectional composites based on periodic temperature and displacement boundary conditions

A mesoscale study of thermal expansion behaviors of epoxy resin and carbon fiber/epoxy unidirectional composites based on periodic temperature and displacement boundary conditions

Thermally-induced responses of triaxially woven fabric composites

Design of composite laminates with low thermal expansion

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