A Note on Dynamic Displacement Measurements Using Hall Effect Sensors

We describe a transducer suitable for dynamic displacement measurements. The transducer uses a commercially available Hall effect sensor and a permanent magnet. Displacements are obtained by measuring the variation in magnetic field strength along the permanent magnet with the Hall effect sensor. To...

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Bibliographic Details
Published in:Journal of testing and evaluation 1989-05, Vol.17 (3), p.196-200
Main Authors: Giovanola, JH, Kobayashi, T, Klopp, RW, Gaines, T, Arwood, R
Format: Article
Language:English
Subjects:
Exact sciences and technology
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Mechanical instruments, equipment and techniques
Physics
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Description
Summary:We describe a transducer suitable for dynamic displacement measurements. The transducer uses a commercially available Hall effect sensor and a permanent magnet. Displacements are obtained by measuring the variation in magnetic field strength along the permanent magnet with the Hall effect sensor. To illustrate the capabilities of the transducer, we discuss three application examples. The first example demonstrates the good performance of the transducer under impact loading conditions and for velocities of up to 10 m/s. The other two examples illustrate the usefulness of the transducer for dynamic fracture experiments.
ISSN:0090-3973
1945-7553
DOI:10.1520/JTE11112J