Advanced Materials Research Vol. 499

Abstract: As a kind of important mechanical drive forms, the reliability level of gear transmission directly haves an effect on the performance of mechanical products. At present, the analysis method of main gear transmission failure is the fault tree analysis, which has several limits in describing multi-state events. Bayesian network which is very suitable to express multi-state events and uncertain logical relationships has been successfully applied to fault diagnosis field. Therefore, Bayesian network is researched in this paper in order to improve gear transmission fault tree, solve limits of the fault tree out and make the failure analysis results more objective and accurate.

Abstract: In this paper, we will introduce the method of magnetic susceptibility ’s unit conversion in MKSA rational system and absolute electromagnetic units (emu) system.

Abstract: This paper shows enumerated electrical field is divided into primary field and secondary field according to two Maxwell circuitation equations combined with fact of induction resistivity log, and the primary field can be solved by analytic geometry method, the secondary field can be solved by finite difference Crisscross grid method. Conductivity selection of primary field and secondary field computation formula of three-component induction resistivity log is developed based on finite difference crisscross grid method in this paper.