ISSN:
1741-2765
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Combined a-c and d-c magnetic fields cause strains in a conducting sample. The amplitude of this strain is dependent on the value of Young's modulus and Poisson's ratio. The strain amplitude, being in the order of 10 pm, can be measured with a stabilized Michelson interferometer, described elsewhere.1,2 An expression is derived, relating the axial strain in cylindrical samples to the magnetic-field quantities, the elastic properties and the electrical resistivity of the sample. The finite-element method is used to treat more complicated configurations. Samples of aluminum, copper, gold and tin are used for comparing the measured and calculated results. To this end, the elastic properties of the copper samples were also determined from measurement of the ultrasonic-wave velocity. The agreement between both methods is very satisfactory.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02326049
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