首页> 美国政府科技报告 >TESTS OF A HIGH-FREQUENCY LARGE AMPLITUDE MAGNETOSTRICTIVE VIBRATION GENERATOR AND THEORETICAL AND EXPERIMENTAL INVESTIGATION OF THE FEASIBILITY OF MODE SHAPE ANALYSIS FROM DRIVING POINT IMPEDANCE MEASUREMENT
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TESTS OF A HIGH-FREQUENCY LARGE AMPLITUDE MAGNETOSTRICTIVE VIBRATION GENERATOR AND THEORETICAL AND EXPERIMENTAL INVESTIGATION OF THE FEASIBILITY OF MODE SHAPE ANALYSIS FROM DRIVING POINT IMPEDANCE MEASUREMENT

机译:高频大幅度磁致伸缩振动发电机的试验及驱动点阻抗测量模态分析可行性的理论与实验研究

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摘要

Tests of a high frequency vibration exciter consisting of a magnetostrictive stack and Mason probe are described. It is shown that simulated gas turbine blades having a cross sectional area of one quarter square inch can be failed near the resonant frequency of the exciter. Failure of an actual gas turbine blade having a resonant frequency 1500 cycles above that of the exciter is described. Theory of a magneto-magnetostrictive force-velocity pickup is described and results of experimental sensitivity measurements are presented. An effort is made to relate driven mode shapes to mechanical driving point admittance. The problem is formulated as an integral equation and a solution is obtained for the static case. The static result is the kernel of the integral equa-tion for the dynamic problem. The method of solution is outlined,

著录项

  • 作者

    R. W. GRETTER;

  • 作者单位
  • 年度 1956
  • 页码 1-50
  • 总页数 50
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工业技术;
  • 关键词

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