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According to the data collected from 23 NC machine tools from one type, based on the fuzzy FMEA model, a Failure modes Analysis have been carried out. Fuzzy linguistic variables were introduced into the analysis, and the three risk factors were given different weights, Each FRPNs of the failure modes were calculated by linear programming, and then the failure mode which influence the NC lathe the...
A mathematical model of effective radius for low velocity non-Darcy flow in low permeability composite reservoir with two different zones is established and the threshold pressure gradients of the two zones in low permeability composite reservoir are taken into consideration. The solution of bottomhole pressure is obtained, the type curves of pressure behavior for low velocity non-Darcy flow in composite...
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