Estimation of joint shear strength based on fractal method

Estimation method can effectively make up the shortages of testing method in determining the shear strength of hard joint.While,the estimation methods commonly used nowadays are all formed based on 2-D shape of joint,and the 3-D character of joint surface is ill-considered.To solve this problem,a new kind of simple measuring equipment which can be used to get 3-D shape of joint surface was manufactured.And then,the fractal method was used to describe the 3-D shape of joint surface.The index of J...