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Method for in-situ nondestructive measurement of Young's modulus of plate structuresA method for determining stiffness of a composite laminate plate entails disposing a device for generating an acoustical pulse against a surface of the plate and disposing a detecting device against the same surface spaced a known distance from the pulse-generating device, and using the pulse-generating device to emit a pulse so as to create an extensional wave in the plate. The detecting device is used to determine a time of flight of the wave over the known distance, and the wave velocity is calculated. A Young's modulus of the plate is determined based on the wave velocity. Methods for both anisotropic and quasi-isotropic laminates are disclosed.
Document ID
20080006023
Acquisition Source
Marshall Space Flight Center
Document Type
Other - Patent
Authors
Huang, Jerry Qixin
Perez, Robert J.
DeLangis, Leo M.
Date Acquired
August 24, 2013
Publication Date
June 10, 2003
Subject Category
Composite Materials
Funding Number(s)
CONTRACT_GRANT: NCC8-39
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-6,575,036
Patent Application
US-PATENT-APPL-SN-602173

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