Nondestructive Vibratory Testing of Airport Pavements. Volume II: theoretical Study of the Dynamic Stiffness and Its Application to the Vibratory Nondestructive Method of Testing Pavements

Abstract

A theoretical and experimental study of the dynamic load-deflection curves of pavements was conducted to determine the dependence of the measured dynamic stiffness values of a pavement on the type of vibrator that is used to make the measurements, and to correlate dynamic stiffness measurements obtained from different vibrators at the same pavement location. Experimental tests were conducted to verify the theoretical results. The dynamic load-deflection curves of pavements are found to be nonlinear, and a nonlinear vibration theory of pavements is developed to describe these curves. This study gives a method of determining the shear modulus and thickness of each pavement layer directly from the measured values of dynamic stiffness for a series of vibrator baseplate sizes. This method may be of practical value for nondestructively determining the subsurface structure of a pavement.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1975
Accession Number
ADA013681

Entities

People

  • Richard A. Weiss

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Computational Science
  • Computer Programs
  • Dynamic Loads
  • Dynamic Response
  • Elastic Properties
  • Engineers
  • Equations
  • Experimental Data
  • Frequency
  • Linear Systems
  • Materials
  • Measurement
  • Nondestructive Testing
  • Nonlinear Systems
  • Power Series
  • Shear Modulus
  • Static Loads

Fields of Study

  • Engineering

Readers

  • Pavement Materials Engineering.
  • Structural Health Monitoring of Composite Structures.