Development of an expert system for nondestructive pavement structural evaluation /
| Main Author: | |
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| Other Authors: | , , |
| Format: | Thesis Book |
| Language: | English |
| Published: |
1989.
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| Subjects: | |
| Online Access: | ProQuest, Abstract Link to OAKTrust copy |
| Abstract: | The use of nondestructive testing (NDT) in pavement structural evaluation is an important task in pavement engineering. The falling weight deflectometer has become the state-of-the-art NDT device. Many programs which use the mechanistic approach to obtain pavement layer moduli from measured surface deflection basin have been developed. However, the mechanistic approaches to solve the backcalculation problem have often met with the difficulty that proper assumptions based on engineering judgement are crucial to the degree of success that is achieved. The objectives of this study are: first, to provide guidelines for determining the structural properties of asphaltic concrete pavements, using NDT data, for use in pavement analysis, design, and rehabilitation; and second, to demonstrate the use of expert system techniques in assisting pavement structural evaluation. Specifically, a prototype expert system program named PASELS (for PAvement Structural EvaLuation System) is developed to provide a basin-by-basin analysis in determining the layer modulus when algorithmic backcalculation methods fail to produce reasonable results. The results of the PASELS system show that the expert knowledge and experience stored in the expert system can help to reduce the systematic errors in backcalculation, and a more reasonable estimation of the layer moduli may be obtained. |
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| Item Description: | Typescript (photocopy). Vita. "Major subject: Civil engineering." |
| Physical Description: | xii, 178 leaves : illustrations ; 29 cm |
| Bibliography: | Includes bibliographical references. |