Abstract
The objective of this paper is to develop a new dynamic backcalculation method (Wave-BALM) for structural evaluation from FWD time series data. The main feature of the method lies in implementation of the theoretical solution for wave propagation in multilayered viscoelastic media composed of Voigt model due to an action of impulsive force. Viscoelastic layer parameters are estimated by backcalculation. In the backcalculation measured and computed deflections are matched by the Gauss Newton method coupled with truncated singular value decomposition. The results obtained by backcalculating measured FWD data using the method are compared with the results from Dyna-BALM. Both results are found similar but Wave-BALM surpasses Dyna-BALM in terms of variations of backcalculated results.
