利用电感测量金属的线膨胀系数实验设计
Experiment Design on Line Expansion Coefficient of Metal by Measuring Inductance
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摘要: 根据线圈自感系数（L）随铁芯插入的深度变化而变化，从而可由线圈自感系数的变化知道铁芯长度的变化，进而由长度变化得到线膨胀系数。提出了一种新的测量金属线膨胀系数的方法，介绍了利用交流电桥来测量线圈的自感系数，进而测量金属线膨胀系数（α）的基本原理、实验方法和实验结果。Abstract: Coil self inductance coefficient (L) changes with the inserted depth variation of iron core ,which can be changed by the coil inductance that change core length ,and linear expansion coefficient obtained by the length change .This paper deals mainly with the introduction of the self inductance coefficient to meas‐ure the coil with AC Bridge ,and then measuring metal linear expansion (α) coefficient of the basic princi‐ple ,experiment method and experiment results .
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