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RISDiscussion of “<i>Effects of Multiple Modes on Rayleigh Wave Dispersion Characteristics</i>” by Kohji Tokimatsu, Shuji Tamura, and Hisaya Kojima (October 1992, Vol. 118, No. 10)
Publisher: American Society of Civil Engineers
Reduction of Impulse-Response Data on Rigid Pavement: Comparison of Single Degree of Freedom, Cone, and Lumped Parameter Dynamic Models
Publisher: American Society of Civil Engineers
Abstract: The Impulse Response (IR) method is a nondestructive method that has been successfully used to detect voids or loss of support underneath rigid pavement and to evaluate the pavement subgrade. Voids or loss of support can ...
Probabilistic Approach to the Solution of Inverse Problems in Civil Engineering
Publisher: American Society of Civil Engineers
Abstract: A wide range of important problems in civil engineering can be classified as inverse problems. In such problems, the observational data regarding the performance of a system is known, and the characteristics of the system ...
Comparative Study of Static and Dynamic Falling Weight Deflectometer Back-Calculations Using Probabilistic Approach
Publisher: American Society of Civil Engineers
Abstract: The falling weight deflectometer (FWD) test is the most widely accepted and used technique for nondestructive evaluation of pavements. In this test, the pavement response to the impulse load of a falling weight is analyzed ...
Interpretation of Flexural Vibration Modes from Impact-Echo Testing
Publisher: American Society of Civil Engineers
Abstract: The main goals of this study are to provide an improved interpretation of flexural vibration modes of delaminations in concrete bridge decks detected using impact-echo testing, and to develop a simple two-dimensional (2D) ...
Neural Networks for Backcalculation of Moduli from SASW Test
Publisher: American Society of Civil Engineers
Abstract: The spectral-analysis-of-surface-waves (SASW) method is a seismic technique for the in-situ evaluation of elastic moduli and layer thicknesses for pavement and soil systems. The inversion process currently used to analyze ...
Detection of Underground Obstacles by SASW Method—Numerical Aspects
Publisher: American Society of Civil Engineers
Abstract: The ability of the spectral analysis of surface waves (SASW) test to detect underground obstacles has been investigated. The SASW test is simulated by the finite-element method. The fluctuations in the dispersion curve, ...
Automated Inversion Procedure for Spectral Analysis of Surface Waves
Publisher: American Society of Civil Engineers
Abstract: The usual inversion procedures for spectral analysis of surface waves (SASW) testing assume that only one Rayleigh mode is dominant, and thus fail to give reliable results for irregular soil profiles and some complex ...
Deterioration and Predictive Condition Modeling of Concrete Bridge Decks Based on Data from Periodic NDE Surveys
Publisher: American Society of Civil Engineers
Abstract: A novel approach and program are developed for deterioration and predictive modeling of concrete bridge decks based on nondestructive evaluation (NDE) data. Through an iterative process—combined with data processing, bridge ...
Deterioration and Predictive Condition Modeling of Concrete Bridge Decks Based on Data from Periodic NDE Surveys
Publisher: American Society of Civil Engineers
Abstract: A novel approach and program are developed for deterioration and predictive modeling of concrete bridge decks based on nondestructive evaluation (NDE) data. Through an iterative process—combined with data processing, bridge ...