Leakage flux flaw detection manner and device

摘要

Topic The true signal by defect in leakage flux flaw detection manner, without the result which was measured having an influence on the fluctuation of measurement state, the measurement and analytical manner which precision well is caught is offered. SolutionsAs the exciting coil with the output signal of the lockin detection circuit and the lockin detection circuit which detect the signal of the same frequency from output of the magnetometric sensor and the magnetometric sensor which detect the horizontal component on the surface of the magnetic field where it leaks from the exciting coil and power source and the object to be tested surface to which for the exciting coil frequency generates the variable alternating current magnetic field in the leakage flux flaw detection manner which is detected the magnetic flux which generates parallel magnetic flux, to the inspected material surface leaks from the object to be tested surface with the magnetometric sensor, having the signal strength of output of the magnetometric sensor and the signal analytical device which analyzes phase changeThe poly dots it adds common adjustment phase in phase and all measurement dots of each measurement dot which is measured it calculates the cosine or sine of trigonometric function of the phase which is adjusted, applies the signal strength and sine or cosine in each measurement dot and it displays the analytical value which is adjusted with optional being, adjustment phase. Choice figure Drawing 1