The experimental data test will be used in conjunction with the numerical results of a counterpart model in an optimization procedure. The cost function will be built using the difference between the numerical and experimental data then minimized in a least squares sense.
Sorry, it seems that "unidirectional composite" should relate to what is usually called a transversely isotropic elastic medium, no? That seems to have 5 independent elastic constants? See http://en.wikipedia.org/wiki/Transverse_isotropy
Usually the answer to your question is simple: no it isn't possible to determine several independent moduli from just one experiment...
Thank you M. Eugene for your answer, I think there exists some bi-axial tensile test on a cruciform test specimen that allows the identification of the four in-plane orthotropic engineering constants of composite plate materials. These tests use the digital image correlation (DIC).
bi-axial tensile test is usually for woven (two directions...) And in this test you won't see the bending modulus.
I want to get the engineering constants using a single set up if it is possible ?
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