If we prepare any 2 composite specimen, with same composition, same fabrication methods under same conditions. Will it assure that we get exactly the identical image of any 2 specimen through SEM?
No
Voids and defects may be formed during the manufacturing of composites. Voids can arise due to lack of compaction eof many layers togther, or due to low pressure in the resin during curing.
Theoretically yes, practically no, never ! A composite, whatever it is, can never be as homogeneous as SEM pictures are identical. In the best conditions, they'll look similar, can certainly not be exactly the same at such scale. You'll have to take many pictures to be sure that what you see is representative.
Alain
Adding to Celzard's comment... there were days when editors of journal insisted on the term "representative" when dealing with morphological testing like SEM, TEM or AFM... these days we seldom see "representative" in papers.
Yes. It will lead to exactly the identical image. Two conditions: (1) The composites should be kept in same environment before taking SEM. (2) Time gap between preparation and SEM analysis.
We can get similar morphology but not exactly same image, However the images will depend on the scientific eye and skill of the operator and aforesaid parameters.
I guess practically achieveing 100% identical SEM images is not possible. even if you keep the magnification, working distance and voltage same. because of hetrogenous nature of composite structures. But overall they should reperesent same morphology if the process paramaters were kept constant.
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