This paper aims to establish the exact relationship between Gauss Level and Temperature for a permanent magnet assembly. Magnetrons require a magnetic field to constrain the thermo-electrons emitted from the cathode to form a space charge cloud. The thermo-electrons would simply dissipate at the earth plane rather than form a space charge cloud without this magnetic field. Hence, to ensure optimum performance and consistency of the magnetron, the magnetic field must be calibrated. To calibrate the magnetic field, electromagnets are commonly used as they are highly flexible but they create additional variables such as cost and complexity. After thorough checks to ensure they have the right magnetic field strength, alternative approach is to use permanent magnets. There is some difficulty is measuring field strength accurately using permanent magnets as they are subject to environmental factors such as temperature which affect their magnetic properties. There is the need to compensate for these environmental factors during measurement to ensure accuracy and therefore correct running of a magnetron. Test data was generated through an experiment which was carried out on a permanent magnet sample cycled in temperature while the magnetic field was measured at periodic intervals. A mathematical model generated from test data can then be used for compensation. The Gauss probe used to measure magnetic field was temperature cycled independently to determine the measurement error and a calibration magnet was cycled to validate the data collected in the first experiment.
Inefficiency in operations management cause wastage of resources and funds. This paper will define and properly describe the supply chain problem, build a representative simulation model, validate it using witness and then find a solution to the problem. The process line was optimised, and the efficiency increased to about 95%.
Emulsion muds are water based drilling fluids, which contain dispersed oil or synthetic hydrocarbon as an internal phase. Drilling muds are very multifaceted liquids mostly made of up clay suspensions and other materials used as circulatory fluids during well drilling. The ability of drilling fluids, in particular invert emulsion muds to perform their functions, such as removal and transportation of cuttings from the well, lubrication and cooling of drill bits and parts, well wall support and formation fluid containment is all dependent on the rheological properties such as their elasticity, plasticity, viscosity and how they flow and distort. The objective of this paper is to carry out an experimental study on oil based drilling fluid; invert emulsion mud, study its rheological properties, its formulation and how they affect well construction and stability. The mud mixture would also be simulated using Drill Bench.
This paper investigates the deflection and bending stress in a cantilever beam of uniform rectangular cross section with a point load using a 3D Finite Element (FE) model. The results are validated using the Bernoulli-Euler’s elastic curve theory equations. The research aims to study and analyse the static analysis of a rectangular beam considered to be isotropic. During this analysis, the displacement is assumed to be small, the material exhibits a linear stress strain relationship i.e.: obeys Hooke’s law, there is no change of magnitude, orientation or distribution of the load applied and the effect of gravity are negligible hence with of the beam is not accounted for in this analysis. The simulation is carried out in the Autodesk Inventor stress analysis environment and validated using theoretical methods after which the effects of point loads on structural integrity and mechanical properties are studied.