Electromagnetic Sensor Arrays for Nondestructive Evaluation and Robot Control.
Annual technical rept. no.1, 1 Sep 84-31 Aug 85,
SRI INTERNATIONAL MENLO PARK CA
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The objective of this research program is to develop the theoretical models, design methodology, and technology needed for optimum application of near field electromagnetic sensor arrays in nondestructive evaluation NDE and robot control. To aid in understanding how best to analyze and control the spatial-frequency content in the field configuration generated by an array, most of this years effort focused on obtaining experimental measurements of the relative spatial distributions defined by the responses of inductive eddy current reflection probes to surface steps and surface breaking rectangular slots in aluminum plates. In particular, a commercial reflection probe Nortec SPO-2065 and an SRI-constructed, five coil, air core reflection probe have been used to interrogate such surface discontinuities. The data obtained using the five coil probe compare favorably with the results of the developed theory.
- Test Facilities, Equipment and Methods