| 摘要 |
PROBLEM TO BE SOLVED: To provide a cracked area rate calculation method and device, which can quantitatively and continuously measure a cracked area rate of a conductive part having electric conductivity such as a joint. SOLUTION: The cracked area rate calculation method for calculating the cracked area rate of the conductive part having electric conductivity includes: a relational expression setting step of setting a relational expression between a resistance change and the cracked area rate based on a specific resistance value of the conductive part determined beforehand; a resistance change measuring step of measuring a resistance change of the conductive part; and a cracked area rate calculation step of calculating the cracked area rate of the conductive part from the resistance change measured in the resistance change measuring step, based on the relational expression set in the relational expression setting step. COPYRIGHT: (C)2011,JPO&INPIT |
