Authors are doing experiments to determine the mechanical properties or thermal properties of polymer nanocomposites. I would like to know about how to validate the obtained results.
You validate either by known standards or by comparing it with previous literature data. There is always some sense of comparison but i dont think anyone can validate his data based on litreature, and if you do then i wont be original research. Rather one would looking into the trend for ex. addition of fibers to composite increases tensile properties but the degree of increases would be specific to the material one uses and its interaction with the polymer matrix
If the goal is to ensure that your results are credible it is always good to make measurements on multiple samples (3 or more) for one data point. The variations in your data (with variations in your parameter of interest) need to be statistically relevant. Once this is done, you could potentially compare your results with those in literature to ensure that the results make sense.
Some of the properties (mechanical, thermal, dielectric,...) of polymer nanocomposites can be fitted by the empirical formula found in the literature. The experimental results are found between the serial and parallel model where they give the upper and the lower limit of the properties.
Agreeing with the others researches, and adding another information. The method used to obtain mechanical properties or thermal properties or even to obtain the nanocomposites has to be reproducible. Could be a good strategy follow some standard as ISO, or ASTM, or other standard as you prefer. Try to explain your results using the literature about mechanical and thermal behavior of you material.
Experimental Results itself is a good validation for your wok if you follow the controlled experimental procedure according to the ISO, ASTM standards.
firstly, you should see the reproduction of your results (three experiences). if you find the same results, in this case you can compare your results with those found in the literature.
Modelling is the only viable method. Starting from the properties of the filler and the matrix in play and their geometrical relationship. The filler can be dispersed particles (spherical, platelets, etc.), fibers (short , long, aligned , random etc.).
Once the geometry of reinforcement is fixed, the theoretical elastic and thermal properties can be obtained from very simple phenomenological equations (for example the Halpin-Tsai equation is widely used ).
Please, consider that no equation has general validity in predicting the "ultimate" properties of nano-composites (namely, the tensile or compressive strength).
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