Patent ID: 6623159
Filing Date: 2003-09-23
Classification: G01N

Abstract:
A thermal deformation analysis method for analyzing thermal deformation of a substance in which deformation occurs in response to an increase and the following decrease in temperature, and while the temperature increases or decreases over time, whereinthermal deformation of the substance is analyzed based on a creep characteristic which relates to the creep deformation of said substance occurring during said temperature increase or decrease as time elapses, and a thermal shrinkage characteristic which relates to the thermal shrinkage deformation of said substance occurring during said temperature increase or decrease as time elapses, the method comprising the steps of: a calculation step for deformation during temperature increase, for calculating the elasto-plastic deformation of the substance during the temperature increase of said substance to a predetermined temperature, based on the elasto-plastic deformation characteristic of the substance; a calculation step for creep deformation, for calculating the creep deformation of the substance when said substance is exposed to said predetermined temperature for a predetermined period of time, based on said creep characteristic; and a calculation step for deformation during the following temperature decrease, for calculating the elasto-plastic deformation of the substance during the temperature decrease of said substance from said predetermined temperature, based on the elasto-plastic deformation characteristic of the substance; wherein the calculation step for deformation during temperature increase, the calculation step for creep deformation, or the calculation step for deformation during the following temperature decrease, is conducted based on said thermal shrinkage characteristic.