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- W647034847 abstract "This study involved preliminary investigation of the components needed to develop a low-cost, prototype, trailer-mounted system to nondestructively delineate irregularities and flaws in rigid pavements while rolling. The proposed system should be capable of delineating cracks, voids, debondings, and delaminations within a rigid pavement system. The design concept consists of introducing stress waves at one point on top of the pavement, and sensing the waves at another point. With this design concept, source and receiver wheels were experimentally studied, small trailer systems were prototyped, and systems to isolate the source and receiver were investigated. Preliminary full-scale tests were performed at the rigid concrete pavement test facility at the University of Texas at Austin. Testing consisted of evaluating individual components at various levels of development in a stationary mode. No successful rolling tests were performed. These tests showed that a source wheel should input stress waves with frequencies up to 25 kHz and force levels above several hundred pounds (> 1000 N). The receiver wheel is, however, the critical design element in a moving system and no successful receiver wheels were developed. A critical aspect is the negative impact that the rough texture of a rigid pavement has on the inability to couple high frequencies into the receiver wheel. Suggestions for future efforts and directions are given." @default.
- W647034847 created "2016-06-24" @default.
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- W647034847 date "1994-12-01" @default.
- W647034847 modified "2023-09-27" @default.
- W647034847 title "PRELIMINARY STUDIES TO DEVELOP A TRAILER-MOUNTED SYSTEM TO DELINEATE IRREGULARITIES IN RIGID PAVEMENTS. INTERIM REPORT" @default.
- W647034847 hasPublicationYear "1994" @default.
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