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Accession Number:

AD1062904

Title:

Method of Estimating Material Properties of an Elastic Plate

Author(s):

• Hull, Andrew J

Author Organization(s):

• DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

2018-09-21

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.

Document Type:

Conference:

Journal:

Pages:

18

File Size:

1.05MB

Contracts:

Grants:

Descriptors:

• modulus of elasticity
• shear modulus
• frequency response
• frequency
• mechanical properties
• shear properties
• laser velocimeters
• measurement
• accuracy
• displacement
• equations
• errors
• materials
• transfer functions
• elastic properties
• mechanical waves
• test methods
• velocimeters
• inventions
• secondary waves

Identifiers:

• frequency response transfer function
• Youngs modulus

SubjectCategory:

• Test Equipment, Research Facilities and Reprography
• Physics

Distribution Statement:

Approved For Public Release

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