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Multi-Channel Data Acquisition System for Nondestructive Testing of Airbase Facilities
| 题名： | Multi-Channel Data Acquisition System for Nondestructive Testing of Airbase Facilities |
| 作者： | Rix, Glenn J.; |
| 关键词： | DATA ACQUISITION, AIR FORCE FACILITIES, AIRPORTS, MULTICHANNEL, VELOCITY, MEASUREMENT, MILITARY FACILITIES, SURFACE WAVES, NONDESTRUCTIVE TESTING, DYNAMICS, FACILITIES, PASSIVE SYSTEMS, PROFILES, LENGTH, SIGNALS, EMBEDDING, NOISE, CULTURE, GEORGIA, SECONDARY WAVES, DISPERSION RELATIONS. |
| 摘要： | A multi-channel data acquisition system including a variety of sources and receivers was purchased to support research at Georgia Tech aimed at the Air Force's need to develop innovative airbase technologies. The equipment purchased comprises a complete multi-channel system for acquiring, processing, analyzing, and displaying dynamic signals. The system provides the capability to more accurately and rapidly perform nondestructive tests, and has thus far been used on two research efforts involving dynamic measurements. On one project involving a USAF Palace Knights student, a comprehensive experimental study was conducted to investigate the suitability of a modal analysis approach for identification of unknown pile embedment lengths. The second project is aimed at developing a non-invasive field technique that uses the dispersion properties of surface waves to determine the shear wave velocity profile at a site. The technique uses passive measurements of surface waves arising from microtremors and/or cultural noise such as traffic. Surface wave dispersion relationships are determined using frequency-wavenumber analyses. |
| 总页数： | 5 |
| 报告类型： | 科技报告 |
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