High-speed rolling deflectometer data evaluation

Peter Andren

doi:10.1117/12.339880

28 January 1999 High-speed rolling deflectometer data evaluation

Peter Andren

Proceedings Volume 3586, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware III; (1999) https://doi.org/10.1117/12.339880
Event: Nondestructive Evaluation Techniques for Aging Infrastructures and Manufacturing, 1999, Newport Beach, CA, United States

Abstract

The high-speed rolling deflectometer is one of the result of almost twenty year of research in pavement condition using laser technique. The latest research vehicle is the laser Road Deflection Tester, built in the mid-nineties using experiences from a prototype truck from the early nineties. Apart from the laser range finders used for finding used for finding the deflection, the truck is also equipped with optical speedometers for both longitudinal and transversal speed, accelerometers and force transducers on the rear wheel axle and a gyro for assessing the deviation. Presently, only the laser range finders are being used as the rest of the sensors has not been calibrated in a satisfying way. During the spring and summer of 1998 a first test program was carried out, and about twenty different roads were studied as a first step towards a more thorough investigation on a road network level. The results from this first major test with the high-speed rolling deflectometer are very promising and, even though many questions remains to be answered, the method has most certainly a strong potential. A general view of some different ways to evaluate the data, as well as more thorough evaluation of some specific roads, will be presented in this paper.

Citation Download Citation

Peter Andren "High-speed rolling deflectometer data evaluation", Proc. SPIE 3586, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware III, (28 January 1999); https://doi.org/10.1117/12.339880

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