Development of Expert System for Evaluating Fatigue Strength : Rotary Bending Fatigue of Notched Bar

Abstract

In an expert system developed for evaluating the fatigue strength of a rounded bar with a notch, two kinds of strength criteria, nonpropagating crack strength and fatigue strength, and two design parameters, notch depth and notch root radius, are adopted. The programming language used for the system is C language. The object-oriented expressions for various types of design knowledge are formed, based on the concept of "structure" of C language. The system is operated on an engineering workstation with the operating system, HP-UX.