Designing And Realization Of Corrosion Failure Expert System

Corrosion is one of the important destroying factors in modern industry and life, which obviously has great social disadvantage and tremendous economic loss. The amount of steel that is destroyed by corrosion every year in the world equal to 30 percent of the production in that year.Metal corrosion can be classified as total corrosion and part corrosion according to its morphology. The ratio of total corrosion is very small so that its harmfulness is relatively insignificant considering the control of corrosion. However, there are still difficulties at present in its prediction and prevention compared with part corrosion, as a result of which, the break incidents due to stress crack corrosion often happen suddenly without any symptom and bring tremendous harm to us. At the same time, among the corrosion incidents, the ratio of part corrosion is much larger than that of total corrosion. Therefore, recently more and more attentions are paid to the investigation and control of part corrosion. Expert system is the program that possesses much authoritative knowledge that can be applied to monitor the thought process of human experts in the expert area so that the problem that especially requires human expert can be resolved and the conclusion that is identical to the human experts can be drawn. In short, expert system is the program that has mastered enough knowledge to carry out procedure in expert level in various areas.Corrosion failure expert system developed by us is base on a lot of data, cases and cause analysis of part corrosion failure, which recurs to the knowledge base system, artificial intelligent system and artificial neural network system to develop a artificial intelligent expert system that can judge the failure tendency of the apparatus and analyze the abating performance of the part corrosion. The software has functions below:As an intelligent multimedia system, the software has the functions of saving, inspecting and displaying case document (including photo). The analysis program to eliminate the fault and to analyze failure can be instructed by the computer so that the actual apparatus can be analyzed about its safety. The style of corrosion can be conformed according to the local corrosion condition. The possibility of the part corrosion failure can be evaluated by analyzing the present problem and comparing it with the case base. It is helpful to select the strategy to maintain the apparatus and control the development of corrosion. Failure model and cause analysis can be performed according to the part corrosion failure incidents.