首页>
外国专利>
CALIBRATION METHOD IN POTENTIAL DIFFERENCE METHOD MEASUREMENT AND POTENTIAL DIFFERENCE METHOD MEASURING DEVICE
CALIBRATION METHOD IN POTENTIAL DIFFERENCE METHOD MEASUREMENT AND POTENTIAL DIFFERENCE METHOD MEASURING DEVICE
展开▼
机译:电位差法测量中的校准方法和电位差法测量设备
展开▼
页面导航
摘要
著录项
相似文献
摘要
PROBLEM TO BE SOLVED: To improve crack measurement precision by the potential difference method.;SOLUTION: When a voltage drop at a crack part being generated when a constant current is allowed to flow to a conductive sample with a thickness of T where a crack K exists is set to E and a voltage drop at a site without any crack K is set to Eo, the change in a potential difference ratio E/Eo for the change in a crack depth (a) is expressed by a calibration approximation expression E/Eo=1+f(a)/(T-a). The relationship between the above potential difference ratio E/Eo and the crack depth (a) is calibrated from the calibration approximation expression.;COPYRIGHT: (C)2000,JPO
展开▼