An Inverse Method for Measuring the Flexural Wave Properties of a Beam

Abstract

This report derives an inverse method to measure the complex flexural wavenumber and wave propagation coefficients of a beam. The new approach obtains seven measured transfer functions by vibrating the beam transversely with any set of corresponding boundary conditions. These measurements are then combined to yield closed form solutions of the beam parameters. The test method is subjected to a Monte Carlo simulation, which shows that it is relatively immune to external noise in the data, and to an experiment, which validates the technique when it is applied to actual laboratory data.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2001
Accession Number
ADA401029

Entities

People

  • Andrew John Hull
  • David A. Hurdis

Organizations

  • Naval Undersea Warfare Center

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Sensors

DTIC Thesaurus Topics

  • Algorithms
  • Boundaries
  • Equations
  • Errors
  • Frequency
  • Frequency Domain
  • Measurement
  • Military Research
  • Modulus Of Elasticity
  • Moment Of Inertia
  • Monte Carlo Method
  • Physical Properties
  • Simulations
  • Test Methods
  • Transfer Functions
  • Undersea Warfare
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Computational Modeling and Simulation
  • Structural Dynamics.