A Bar‐Magnet Velocity Meter
作者:
Thomas A. Perls,
Erich Buchmann,
期刊:
Review of Scientific Instruments
(AIP Available online 1951)
卷期:
Volume 22,
issue 7
页码: 475-481
ISSN:0034-6748
年代: 1951
DOI:10.1063/1.1745976
出版商: AIP
数据来源: AIP
摘要:
A bar‐magnet velocity meter for vibratory and shock motions has been investigated both theoretically and experimentally. There has resulted a set of characteristics which constitute a marked improvement over the characteristics of previous velocity meters, in important respects. The instrument consists of a long bar magnet which moves relative to a long coil. It is shown that Alnico V combines all the best features required of the magnet material, when compared experimentally with a magnet made of hardened tool steel and theoretically with other grades of Alnico, Cunife, and tungsten steel. Different methods are discussed for installing the velocity meter.
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