Feasibility Evaluation of a Ferromagnetic Materials Sensor,
Abstract
A ferromagnetic materials sensor consisting of a ferrofluid suspended spherical magnet and a flux linked pick-up coil was theoretically and experimentally evaluated. Frequency response measurements were made with a periodic perturbing field of about 5 oersteds, and impulse response data was taken for interaction with a depermed steel plate at separations of 5 inches and 10 inches separations from the sensor. The principal conclusion derived from this evaluation is that the new sensor provides an effective means for detecting small, time-varying, magnetic field disturbances and the positional changes of nearby ferromagnetic objects. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1972
- Accession Number
- AD0748117
Entities
People
- Edward J. Cook
Organizations
- Arthur D. Little