Abstract
The process planning expert system for the plate structure is discussed in this paper. The partitioned structure to be built is expressed in terms of the Entity-Relationship model and the rule-based production system is applied to represent human experts for the process planning. The whole system including the rule-based production system is made on the Smalltalk-80 environment.
The proposed system is applied to the double bottom structure of the ship and results obtained seem fairly appropriate for the production.
