Tool deformation during the shape rolling of stator vanes
Tool deformation is an important issue in the shape rolling of stator vanes as it directly 
influences the thickness of the rolled vane. This means that for the design of an accurate production process 
the deformation of the tools has to be accounted for. The shape rolling of symmetrical straight vanes has been 
investigated. This rolling process is considered stationary, because these vanes have a constant cross-section 
over the length. Therefore an ALE formulation is suitable to calculate the steady state. The deformation of 
the sheet as well as the deformation of the tools have been calculated with the developed finite element model. 
Some results of these simulations are presented in this paper
3D FEM Simulations of a shape rolling process
A finite element model has been developed for the simulation of the shape rolling of stator 
vanes. These simulations should support the design of rolling tools for new vane types. For the time being 
only straight vanes (vanes with a constant cross-section over the length) are studied. In that case the rolling 
process can be considered stationary and an ALE formulation is suitable to calculate the steady state. Results 
of simulations and experiments for a symmetrical straight vane are presented
A New Vacuum Pressure Infiltration CFRP Method and Preparation Experimental Study of Composite
In order to prepare a carbon-fiber-reinforced polymer composite (CFRP) with ideal microstructure and properties, a new vacuum pressure infiltration CFRP method is proposed based on an analysis of existing CFRP preparation process methods. Research on composite material preparation systems was carried out by using this new method principle. The system mainly includes a fiber pre-forming module, a vacuum heating infiltration module, a hot-press curing molding module, and a data acquisition control module. Under the conditions of natural curing at 0 MPa + 6 h + 25 °C, vacuum heating curing at –0.05 MPa + 30 min + 80 °C, and hot-press curing at 0.7 MPa + 5 min + 50 °C, a two-dimensional (2D) CFRP with excellent microstructure and properties was successfully prepared. Observing the microstructure of the prepared composite material, it can be found that the inside of the composite material was sufficiently and uniformly infiltrated, and common preparation defects such as holes and delamination were effectively controlled. Through the performance test, the bending strength of the material reached 790 MPa.