... by shooting in quarter space. Additionally, both techniques permitted visualizing distinct dilation zones ahead and around penetration. Each technique offers a number of distinct advantages. In particular, half space penetration reduces the possibility of projectile diversion and is much safer, whereas...

... analysis shear band bifurcation sand dilation local deformation laboratory tests hollow cylinder specimen References Acosta , J. A. , Figueroa , J. L. , and Mullen , R. L. , 1992 , “ A Low Cost Video Image Processing System for Evaluating Pavement Surface Distress...

... to a drop in dilatancy rate and the formation of a shear band. In most undrained tests, negative pore pressures developed and deviatoric stress increased during the constant volume phase of the test. Eventually, cavitation of the pore fluid occurred and the deviatoric stress stabilized. The maximum stress...

... ). The test results indicate that the CNS conditions greatly influence the shear behavior of rock joints. 20 08 2012 07 05 2013 19 07 2013 rock joint direct shear apparatus constant normal stiffness physical modeling shear behavior dilation References ASTM D5607-02 , 2006...

...KL Fishman; CS Desai The use of inductance coils for measuring normal deformations involving dilation or compression across a discontinuity is described. Discontinuities may be in the form of interfaces between dissimilar materials or rock joints. In contrast to the conventional schemes...

... specimens utilizing either load or displacement control. The device is described in this paper, and typical results are presented for static and cyclic loading of a variety of interfaces including some that dilate on shearing and others that collapse as they are sheared. piles shear tests shear...