How is the interface resistance measured?
If it is not conductive, the insulation resistance between them is measured by a ohmmeter. If you are conducting, it can not be directly measured by contact resistance meter million, because the contact resistance is nonlinear, it changes with the change of the current and, when available, a DC power supply (batteries) connected in series with a resistor and they are connected in series with a multimeter measuring the voltage between MV their R=U/I, you can calculate the contact resistance (the I with a multimeter connected in series with the measured current file). You can also use 220V voltage serially connected with a light bulb to measure, put them in the insulation paper (Caution!), with a multimeter measuring the exchange of files. I am talking about electronic multimeter, with many measuring ranges and high accuracy.
Resistance, because of the material to the current produced by the obstruction, so called the role of resistance substances. Resistance will lead to changes in electron flow. The smaller the resistance, the greater the electron flow, and vice versa. A substance without a resistance or resistance is called an electric conductor, or a conductor. Substances that do not form current transport are referred to as electrical insulators, or insulators.
This is not difficult, so, according to the above method, measured by the resistance value, minus two plates of resistance value on it. What you mean may be to measure the resistance density of the gap, which is very difficult, so you must use ultrasonic testing.That's the bridge, the base, and the Hof theorem, the resistance box is extremely accurate, but it can only measure the total resistance, and it can't measure the resistance density.I think we can only use the comparison method, first use a piece as the standard model (the best adhesion, determine its resistance, area), and other measurements to compare it with it. Besides, I really don't have any good ways, huh?.
