statistical methods

http://www.sciencedirect.com/science/article/pii/S0266353813001012?np=y
Abstract

3-D
reconstruction of Halloysite nanotube (HNT) polypropylene composite has
been performed using two different methods. In the first method,
several slices of the composite material were obtained using focused ion
beam (FIB), and scanning electron microscopy (SEM). A representative
体积单元(RVE)的真实材料的微/nanostructures was