An effective inverse analysis computer program that integrates nonlinear optimization algorithm and forward dynamic analysis of multilayered medium is developed for inferring structural and material properties (e.g., modulus, thickness, and the number of layers) of the medium. Using dynamic deflection information obtained from forward dynamic analysis of the multilayered medium as a hypothetical deflection measured from the field during pavement nondestructive evaluation (NDE) using falling weight deflectometer, the estimated parameters of the medium are compared with the known true parameters of the medium used to perform the static and forward dynamic analyses. Based on two different multilayered media, a number of important observations and conclusions are made regarding the accuracy and efficiency of the proposed numerical algorithms and developed computer program. The inversion methods presented in this paper show improved NDE results over many of the existing algorithms.
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July 2011
Research Papers
Elastodynamic Inversion of Multilayered Media via Surface Waves—Part II: Implementation and Numerical Verification
Feiquan Luo,
Feiquan Luo
Department of Civil Engineering,
Catholic University of America
, 620 Michigan Avenue NE, Washington, DC 20064
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Lu Sun,
Lu Sun
Department of Civil Engineering,
e-mail: sunl@cua.edu
Catholic University of America
, 620 Michigan Avenue NE, Washington, DC 20064; Transportation College
, Southeast University, Nanjing 210096, China
Search for other works by this author on:
Wenjun Gu
Wenjun Gu
Department of Civil Engineering,
Catholic University of America
, 620 Michigan Avenue NE, Washington, DC 20064
Search for other works by this author on:
Feiquan Luo
Department of Civil Engineering,
Catholic University of America
, 620 Michigan Avenue NE, Washington, DC 20064
Lu Sun
Department of Civil Engineering,
Catholic University of America
, 620 Michigan Avenue NE, Washington, DC 20064; Transportation College
, Southeast University, Nanjing 210096, Chinae-mail: sunl@cua.edu
Wenjun Gu
Department of Civil Engineering,
Catholic University of America
, 620 Michigan Avenue NE, Washington, DC 20064J. Appl. Mech. Jul 2011, 78(4): 041005 (7 pages)
Published Online: April 13, 2011
Article history
Received:
October 6, 2009
Revised:
May 20, 2010
Posted:
January 31, 2011
Published:
April 13, 2011
Online:
April 13, 2011
Connected Content
A companion article has been published:
Elastodynamic Inversion of Multilayered Media via Surface Waves—Part I: Methodologies
Citation
Luo, F., Sun, L., and Gu, W. (April 13, 2011). "Elastodynamic Inversion of Multilayered Media via Surface Waves—Part II: Implementation and Numerical Verification." ASME. J. Appl. Mech. July 2011; 78(4): 041005. https://doi.org/10.1115/1.4003550
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