Flaw diagnosis for fan impeller at certain factory of Baosteel;

The extension of classification and classification structure is introduced,focusing on analysis of the unbalanced vibration fault type,fault causes,and the method of clearing fault of large-scale fan impeller and shaft system.

This paper introduces CO_2 welding technology for impeller of fan.

With regard to the fast growth of application of composites in wind energy industry,some informations on the wind energy market growth,the production and value of wind turbine blades made of composites,the manufacturing process of blade components and the material development for blade manufacture are presented here.

In this paper a new method suitable for wind turbine blade is developed,this method adopts the Marc general finite element program as the fundamental platform,aerodynamic calculation is programmed into subroutine,based on the characteristic of subroutine calling,the boundary conditions exchange of fluid and structure in each incremental step is realized.