The one method is using FIB to micropillar. Without using that, directly from the load displacement data.
nanoindentation of coatings can be calculated using a spherical indenter. There are some derivations in contact mechanics which can provide a relationship between stress and starin using a spherical indenter. .
Check the link:
http://www.sciencedirect.com/science/article/pii/S0927796X15000157
Just let me know if you need some more help.
Please find attached files. Go through below links. These articles might be helpful. Go through below links.
http://onlinelibrary.wiley.com/doi/10.1002/app.43532/full
http://www.sciencedirect.com/science/article/pii/S0032386116301227
At first it is vital to define the nature of the load-displacement data. Is your sample elastic, elastic-plastic, viscoelastic or . . . ? And thereby, it is vital to consider the choice of the suitable contact model for your case. I usually recommend not transforming load-displacement to stress-strain as load-displacement data is more convenient to handle and almost every possible mechanical property can be evaluated out of it. I recommend you go through - http://www.sciencedirect.com/science/article/pii/S0009250907000073 which gives a overall survey of suitable contact models and - http://www.sciencedirect.com/science/article/pii/S0009250914001651 which shows how such data can be used for evaluation for the case of elastic-plastic samples.
Thanks, Naveed,Malik, and Russel, I appreciate your responses. Basicallly, I use the Ceramics coating and try to find its elastic and plastic behavior. yield stress, stress strain etc.
Thanks again.
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