SYSTEM AND METHOD FOR EVALUATING CRACK DEVELOPMENT

PROBLEM TO BE SOLVED: To easily evaluate the crack development of a plant configuration material by calculating a fracture mechanics parameter, and by calculating the cracking speed at a specific site by the relationship database storage means between a parameter value and the crack speed. SOLUTION: In a crack development-evaluating device, a shape, dimensions, temperature, pressure, crack length, crack position, and the like are changed in advance at a required site, a crack development is analyzed by the finite element method, and a fracture mechanics parameter is calculated. Database in which the relationship between the parameter and the temperature, the pressure, the crack length, the crack position, and the like is enciphered is created and stored. By utilizing the database, temperature and pressure measured by a temperature/pressure-measuring device, the quality of a material and dimensions from design database, and the crack length and position measured by the crack-detecting device are inputted to analyze crack development. In this manner, the crack development-evaluating device is combined with the crack-detecting device, thus simultaneous and quick crack-detection and crack development evaluation is made possible.