Method of Estimating Material Properties of an Elastic Plate

Abstract

A method is provided for increasing accuracy in measuring complex Youngs modulus and complex shear modulus of a material using a processing system. The material is tested to obtain an experimental frequency response transfer function of normal displacement to input force. A model panel is developed in the processing system as a modeled frequency response transfer function. The modeled transfer function is used at a range of fixed frequencies to calculate displacements of the model panel divided by the input force while varying material parameters. The modeled frequency response transfer function is compared with the experimental frequency response transfer function to compute error function values. These values indicate the most accurate material property values as those minimizing the computed error function values.

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Document Details

Document Type
Technical Report
Publication Date
Sep 21, 2018
Accession Number
AD1062904

Entities

People

  • Andrew J. Hull

Organizations

  • United States Department of the Navy

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Displacement
  • Elastic Properties
  • Equations
  • Errors
  • Frequency
  • Frequency Response
  • Inventions
  • Laser Velocimeters
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanical Waves
  • Modulus Of Elasticity
  • Secondary Waves
  • Shear Modulus
  • Shear Properties
  • Test Methods
  • Transfer Functions
  • Velocimeters

Readers

  • Control Systems Engineering.
  • Materials Science and Engineering.