Electromagnetic Levitation – White-noise Measurement Protocol for Modulated Calorimetry

Int. J. Microgravity Sci. Appl. 2013p050
Author
J. ETAY
Organization
SIMAP/EPM Phelma Campus
Abstract
Electromagnetic levitation of electrically conductive droplets by alternating magnetic fields is a technique used to measure the physical properties of liquid metallic alloys as heat capacity and thermal diffusivity, among others. In order to reduce electromagnetic stirring and shaping of the molten sample, experiments are conducted in microgravity. Measurement is performed by using the modulation calorimetry technique . Here we test both numerically and experimentally a new measurement protocol, which aim is to eliminate calibration. We use this procedure to demonstrate that the use of a levitator in a DC magnetic field overcomes the negative effects of the electromagnetic stirring inside the sample on the accuracy of the modulated calorimetry technique.
Keyword(s)
Electromagnetic levitation, modulated calorimetry, identification, white-noise, magnetic fields superposition
PDF
Download

© The Japan Society of Microgravity Applicaiton

この投稿文は次の言語で読めます: Japanese

ページ先頭に戻る