摘要
磁通量传感器是利用铁磁材料的磁弹性效应,通过测量磁导率变化,测定铁磁材料构件的张力。该种测量方法为无损、非接触性测量。在环形后张预应力体系的施工监控和长期监测中,磁通量传感器是理想的测量元件。对磁通量传感器的原理、性能及其在预应力环锚工程中的应用进行了研究。
The elastomagnetic sensors are obtained according to magnetoelasticity that for ferromagnetic materials the stress can change the magnetic properties. It can be used in stress monitoring of the steel rod. Through calibration, the temperature and stress dependence of the relative permeability is revealed. As an engineering application of ferromagnetic magnetoelasticity, the elastomagnetic sensors make possible non - contact stress monitoring for circular pre - stressed tendons and the other ferromagnetic structures. Theory and performance and engineering application of elastomagnetic sensors are discussed in this paper.
出处
《煤炭技术》
CAS
2007年第9期114-116,共3页
Coal Technology
关键词
磁弹性效应
磁通量传感器
环锚
长期监测
elastomagnetic effect
elastomagnetic sensor
circular pre- stressed tendon
health monitoring
