Evaluation of the axial force in an FeCo bolt using the inverse magnetostrictive effect
Evaluation of the axial force in an FeCo bolt using the inverse magnetostrictive effect
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DOI：
10.1016/j.measurement.2020.108131
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发表时间：
2020-12-01
期刊：
影响因子：
5.6
通讯作者：
Maejima, Kensuke
中科院分区：
文献类型：
--
作者：
Mori, Kotaro;Horibe, Tadashi;Maejima, Kensuke
本研究探讨以磁感应强度变化作为螺栓拧紧力矩之诊断参数。所提出的方法使用逆磁致伸缩效应，考虑到磁通密度的变化，根据内部应力的螺栓。在实验中，我们测量了磁致伸缩材料FeCo螺栓在拧紧过程中的应变和磁通密度。此外，理论和三维有限元分析，并计算轴向力，扭矩因子，应变，和磁通密度。将实验结果、理论分析结果和理论计算结果进行了比较，并分析了螺栓轴向内力与磁场强度之间的关系。结果表明，在FeCo螺栓的磁通密度的变化与偏置磁场的大小，这项研究提出了一种新的智能螺栓的可能性。(c)2020爱思唯尔有限公司保留所有权利。
The use of the magnetic flux density change as a diagnostic parameter in screw tightening torque of bolts is discussed in this study. The proposed methodology uses the inverse magnetostrictive effect, considering that the magnetic flux density changes according to the internal stress of the bolt. In the experiments, we measured the strain and magnetic flux density of the magnetostrictive material FeCo bolt under tightening. Moreover, theoretical and three-dimensional finite element analyses were performed, and the axial force, torque factor, strain, and magnetic flux density were calculated. The experimental, analytical and theoretical results were compared, and the relationship between the bolt's internal axial force and the magnetic flux density was examined. Results show that the magnetic flux density in the FeCo bolt varies with changes in the magnitude of the bias magnetic field, and this study proposes the possibility of a new class of smart bolt. (c) 2020 Elsevier Ltd. All rights reserved.