Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent
1993-07-09
1995-08-01
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
324209, 324225, 324232, 324242, 324262, G01N 2790, G01R 3312
Patent
active
054382629
ABSTRACT:
In order to improve product quality control through quantitative determination of a defect and quantitative judgement of the quality of a product, an alternating current is applied to a standard product coil into which is inserted a standard object, and to a test object coil into which is inserted a test object, and eddy currents are measured by means of a bridge circuit. If the test object coil is at a location removed from a flaw, the bridge circuit output voltage is zero, while if the test object coil is at the location of the flaw, a predetermined voltage is output. A determination of torsional breakage torque of the shaft inspection is carried out by correcting the output voltage for dependence on the cross sectional area ratio of the test object relating to the cross sectional area of the coil and for the influence of flaw size depending on the location.
REFERENCES:
patent: 2065118 (1936-12-01), Davis, Jr.
patent: 2418686 (1947-04-01), Zuschlag
patent: 3132299 (1964-05-01), Hochschild
patent: 4488114 (1984-12-01), David et al.
patent: 4556846 (1985-12-01), D'Hondt
Kojima Akiyoshi
Nanjyo Atsushi
Nippon Oil Co. Limited
Strecker Gerard R.
LandOfFree
Method and apparatus for the nondestructive determination of tor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for the nondestructive determination of tor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the nondestructive determination of tor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-735570