TEST METHOD FOR EVALUATING WATER OR MOISTURE ABSORBING PROPERTY OF MATERIAL AND METHOD OF DETECTING WATER OR MOISTURE ABSORPTION DISTRIBUTION OF MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a method of detecting water or moisture absorption distribution of material by which the portion which is apt to absorb water or moisture of a material, for example, a copper-plated laminated board, etc., can be specified by detecting the water or moisture absorption distribution of the material in a visualized state.;SOLUTION: In this method of detecting water or moisture absorption distribution of material, a microwave having the same natural frequency as water has is projected upon the material, for example, the copper-plated laminated board 1 for a fixed period of time and the temperature distribution of the board 1 is measured by using a thermograph while or after the microwave is projected. Then the water or moisture absorption distribution of the board 1 is displayed in a visible state.;COPYRIGHT: (C)2003,JPO