will the moisture diffusivity of a unidirectional and quasi-isotropic laminate same?
If yes, why?
If no, why?
Alok Behera you can find more information here:
Article The effect of fiber orientation angle in composite materials...
Yes, fibre orientation affects the moisture diffusion considerably due to the variation in fibre dispersion as well as edge defects at fibre in the composites....
These investigations are helpful, go through these,
1) The effect of fiber orientation angle in composite materials on moisture absorption and material degradation after hygrothermal ageing
2) Effect of geometric dimensions and fibre orientation on 3D moisture diffusion in flax fibre reinforced thermoplastic and thermosetting composites
Highlights
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With increase in temperature, diffusion coefficient and absorbed moisture increased.
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The diffusion coefficient and weight gain are higher in water than sea water.
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Mechanical degradation caused decrease in failure force and maximum displacement.
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The fiber–matrix interface at higher temperature is weaker than lower temperature.
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ABAQUS can properly predict the saturation time of aged specimens.
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