Development Of Arc Welding Process Expert System

Welding procedure expert system (WPES) is one kind of software produced with ES technology to instruct technician design WPS (welding process specification) and WPS file. In the process of welding structures manufacture, it is the necessary to make the WPS relying on the PQR. WPES has the feature in reducing cost, shortening the periodicity for preparing technology, reducing labor intensity, improving the manage level, and increasing enterprise ability of competition.WPES is a type of application software for design in the field of welding. The system can manage the WP files and design and compute the strength of welded joint in the steady load. It can be used for analysis of the steel structures of railway, bridge, mechanical, ship etc. The main content of WPES is the design of the parameter of arc welding process; checking the steady strength of structure and providing the query of welding standard and relative knowledge are involved.The system can simulate expert in the welding field to instruct technician designing the process parameters, working out WPS files and manage all the process files effectively. It can check the steady strength of welded joint, estimate the cost of welding, inquiry the welding standard, and inquiry the chemical composition and mechanical properties of common carbon steel, alloy steel, heat-resistant steel, tool steel etc. inquiry welding materials. It also can analysis the formation reason of the common weld defect. The system can provide the weldability of base metals, and allow the manager to extend the function of it.The system is established as a simple Client/Server net model using distribute frame, which support the communication of data between the local area network (LAN). It can satisfy the netting of information and integration oftechnology for the corporation.The system is created with the method of software engineering; incremental development model is also used in it. The method of modularization program is applied in the realization of it. It divides the field information data base and the control inference, taking the data base as the source of ES, and it is convenient for the developer and customer to use the manage system of data base to manage and maintenance the data base knowledge source of ES, and it allow customer to modify and extend the data base to realize the extension of the function of system. The control inference of system is designed into multistage model: it is convenient to control the inference of system and program, debug and stage servicing. The explain module of system provide help and the illustration of system online in time. It is convenient for the customer to use and operation.