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Pavement Deflection Measurement – Dynamic, Phase II, Section II (Vehicle): Final Report


Implementation of automatic data acquisition using impulse techniques requires the development of a mechanical device to set an instrument package on the pavement, deliver an impulse of energy, and retrieve the instrument package. This is to be accomplished automatically with the vehicle proceeding down the highway.

This report describes developments toward an improved system for accomplishing the desired results. The system employs a cleated belt supported by dual wheels in the configuration of a V-belt which carries the instruments. A pneumatic hammer which delivers an impulse of energy to the pavement and its supporting linkage is also described.

A bibliography of previous reports on impulse techniques of pavement testing is included.

  • Date Published: August, 1972
  • Publication Number: WA-RD 3.4A
  • Last Modified: January 26, 2008
  • Authors: Frank W. Brands, John C. Cook.
  • Originator: Washington State University. College of Engineering. Research Division.
  • # of Pages: 56 p., 1,438 KB
  • Subject: Bibliographies, Deflection, Deflection tests, Evaluation, Impulses (Mechanics), Nondestructive tests, Pavements, Testing.
  • Keywords: Non-destructive testing, pavement condition, pavement evaluation, impulse testing.
  • Related Publications: Pavement Deflection Measurement - Dynamic: A Feasibility Study, (WA-RD 3.1).
    Pavement Deflection Measurement - Dynamic, Phase II, (WA-RD 3.2).
    Deflection Measurement - Dynamic, Phase III, WSU Impulse Index Computer, Section I, (Suitcase), (WA-RD 3.3).
    Pavement Deflection Measurement - Dynamic, Phase III, Section II, (Vehicle), (WA-RD 3.4).
    Pavement Deflection Measurement - Dynamic Phase IV: Final Report, (WA-RD 3.5).

This abstract was last modified April 29, 2008