Load, indenter position, and time were logged and displayed online by the test software package TestXpert (Version 8.1, Zwick).
The indenter position was calibrated prior to each test; it was set to zero at the level of the base of the cavity.
(Tell them your indent, your position, what runway in use, if you want to land or touch and go).Ex.Ex
The indenter was positioned approximately at the central region of the tibial surface with respect to the mediolateral and dorsoventral axes.
The effects of elastic foundation, indenter's initial velocity, indenter's axial position, thermal field and geometry are discussed.
In addition, by using a modified Hertz's contact law, the influence of material properties of the substrate layers on impact response and a general case of impact with different indenter's axial position is taken into account.
where K is a specified force constant related to the hardness of indenter, h is the position of the compression plane, λ z i – h) is the distance between the i-th atom and the planar indenter, H is the unit step function, and λ equals 1 for the top indenter, −1 for the bottom indenter, respectively.
When the surface position to the indenter tip further increases, the normal force at 100 m/s becomes smaller than those at 1 and 10 m/s, and the 1 m/s curve is overall slightly lower than the 10 m/s curve in terms of normal force.
(3) Static compression with the indenter remaining in the achieved position for 60 s.
The indenter remained in the achieved position for an interval of 60 s and the described test-cycle was then repeated another four times.
