Apparatus for testing elongated objects having a radially adjust

Details Apparatus for testing elongated objects having a radially adjust Apparatus for testing elongated objects having a radially adjust

1994-05-19

1996-05-14

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetic test structure elements

324232, 324242, G01N 2790

Patent

active

055171141

ABSTRACT:
A device for testing elongated objects, particularly wires, optionally with cross-sectional irregularities, which has a rotating test head traversed by the object and on which is provided a probe, particularly an eddy current probe, provided on rotary probe holding means and guided on circular paths about the object. For the change of the radial spacing between the object and the probe with the test head rotating, externally controllable e.g. by a sensor for irregularities, the device has a switching device with two inherently stable switching states, whereof one can correspond to a testing position near the object and another to a raised position further removed from the object and which can be rapidly set for protecting the probes.

REFERENCES:
patent: 3612987 (1971-10-01), Placke et al.
patent: 4053827 (1977-10-01), Millette et al.
Rotary-Probe Eddy Current Testing of Hot Steel Rods, M. Mizuno, "Material aluation", Jun. 1991, pp. 681-684.

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