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TECHNICAL PAPERS

Calculation of the Response of a Composite Plate to Localized Dynamic Surface Loads Using a New Wave Number Integral Method

[+] Author and Article Information
Sauvik Banerjee

Mechanical and Aerospace Engineering Department, University of California, Los Angeles, CA 90095-1597 e-mail: sauvik@ucla.edu

William Prosser

Nondestructive Evaluation Branch, NASA Langley Research Center, MS231, Hampton, VA 23681-0001e-mail: w.h.prosser@larc.nasa.gov

Ajit Mal

Mechanical and Aerospace Engineering Department, University of California, Los Angeles, CA 90095-1597e-mail: ajit@ucla.edu

J. Appl. Mech 72(1), 18-24 (Feb 01, 2005) (7 pages) doi:10.1115/1.1828064 History: Received May 12, 2003; Revised July 07, 2004; Online February 01, 2005
Copyright © 2005 by ASME
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References

Figures

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The locus of the real roots, k2(k1) of g(k1,k2) in the k1–k2 plane
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Schematic of a loaded unidirectional composite plate showing position of the sensors with respect to the fiber direction
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Kernel behavior for a unidirectional graphite/epoxy composite plate of thickness 1 mm for propagation along 45 degh for two cases: (a) at a distance 10 mm from the source at 0.1 MHz and (b) at a distance 50 mm from the source at 1.0 MHz (CPT). (i) Locus of real (k2r) and imaginary roots (k2c) of g(k1,k2) in the k1–k2 plane, (ii) absolute plot of Eq. (3), and (iii) real and imaginary parts of the integrand in Eq. (5).
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Kernel behavior for a unidirectional graphite/epoxy composite plate of thickness 1 mm for propagation along 90 deg at a distance 50 mm from the source at 1 MHz (exact theory). (i), (ii), and (iii) are the same as that of Fig. 3.
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Time history and spectrum of the source
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Time history of vertical surface displacement in a 1 mm thick unidirectional graphite/epoxy composite plate subjected to a point load from exact theory (first column) and FEM (second column), (a) 0 deg propagation, (b) 30 deg propagation, (c) 60 deg propagation, and (d) 90 deg propagation  

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