Vibration diagnostics of concrete block

Concrete Vibration and Consolidation

Concrete Vibration can take some time ans sometimes it just seems to take longer than it should to pour and consolidate a precast product, such as concrete pipe or a manhole section. Frustrated by sluggish procedures, The Cretex Companies’ Rapid City, South Dakota, plant determined to improve on the half hour it took to pour zeroslump concrete, consolidate it, and get the top ring in place on t...

Vibration Diagnostics for Industrial Electric Motor Drives

Water Content Diagnostics of Concrete Using Nonlinear Acoustics Means

It is known that water or moisture affects the concrete strength seriously. In this paper, the concrete strength is evaluated from the relationship between water content and the acoustic nonlinearity parameter. To measure the influence of water content, a test piece was put in an oven to change the amount of water. Acoustical parameters were measured while one kilogram of water was vaporized un...

Vibration Diagnostics of Electrical Machines by means of Optoelectronic Sensors

Abstract: The proposed method allows determining the level of wear of the bearings of electric machines by means of rotor radial displacement during operation. Measurement is effected by non-contact method and optoelectronic sensor which converts the rotor mechanical motion into electric signal. Received informational signal is recorded and processed by computer system. Based on the processed i...

Initial Steps to Vibration Control of a Concrete Pu Vip

Concrete pump robots are used for very wi le operating ranges, so elastic deformations of the links must be taken into account . Concrete pumps demand actuators with a high power density, able to produce large forces which can be achieved by the use of hydraulically driven actuators . Hydrostatic differer tial cylinders are widely used because of their simple construction. For multilink flexil ...