A new method is presented to measure inplane vibration amplitudes of the order of some 10 nm. The measurement system utilizes the speckle effect and consists of only a few mechanical components. The evaluation is done by a microcomputer. The whole system is insensitive to environmental noise. The method has been applied to investigate the amplitude distribution of
Jul 15, 2020· Vibration is the movement or mechanical oscillation about an equilibrium position of a machine or component. It can be periodic, such as the motion of a pendulum, or random, such as the movement of a tire on a gravel road. Vibration can be expressed in metric units or units of gravitational constant g, where 1 g = 9.81 m/s 2. An ...
Cutting data and tool path programming. Always position the cutter off centre in relation to the milled surface; With KAPR 90° long edge cutters or end mills, use low radial immersion: max a e = 25% DC and high axial cut: max a p = 100% D e In face milling, use a small depth of cut, a p, and high feed, f z, with round inserts or high feed cutters with small entering angles
When you hit the jelly, the whole body wobbles for a while at a certain frequency. And because the jelly is a soft material it wobbles with quite a low frequency. The frequency also depends on the size of the jelly. The same phenomenon also occurs with solids, e.g. quartz crystals. The important difference is, that quartz is much harder than jelly.