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Experimental and theoretical investigation of stress wave attenuation in fiber reinforced composites.The propagation of an initialrcidrical pressure pulse through a linear elastic fiber reinforced composite medium is analysed, both experimentally and analytically. In the experiment, tests were performed on plates with single and multiple circular inclusions embedded in a matrix of lower characteristic impedance. Sharp compression pulses were generated at an edge of the plate. Strain gages were mounted on various positions of the plate to determine the attenuation of the transient stress in the fiber reinforced composite. The qualitative analytical treatment is based on the methods of propagating stress discontinuities. Computer programs were written to numerically determine the changes in the shape of the leading wave front and the stresses immediately behind it. Experimental results for the attenuation of stress wave on steel-aluminum and steel-brass fiber-matrix composites compared very well with the computed analytical results when the applied pressure is generated by small explosive charges. The results did not compare well when the applied pressure is generated by projectile impact.
Document ID
19720041749
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Yang, J. C. S.
Tsui, C. Y.
(Maryland, University College Park, Md., United States)
Date Acquired
August 6, 2013
Publication Date
April 1, 1972
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 72-394
Meeting Information
Meeting: Structures, Structural Dynamics, and Materials Conference
Location: San Antonio, TX
Start Date: April 10, 1972
End Date: April 12, 1972
Sponsors: SAE, AIAA, ASME
Accession Number
72A25415
Funding Number(s)
CONTRACT_GRANT: NGR-21-002-292
Distribution Limits
Public
Copyright
Other

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