Ultrasonic evaluation of flood gate tendons

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Description

Our water resources infrastructure is susceptible to aging degradation just like the rest of this country`s infrastructure. A critical component of the water supply system is the flood gate that controls the outflow from dams.Long steel rods called tendons attach these radial gates to the concrete in the dam. The tendons are typically forty feet long and over one inch in diameter. Moisture may seep into the grout around the tendons and cause corrosion. Lawrence Livermore National Laboratory is working with the California Department of Water Resources to develop advanced ultrasonic techniques for nondestructively inspecting their tendons. A unique transducer ... continued below

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9 p.

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Thomas, G. & Brown, A. October 1, 1997.

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Description

Our water resources infrastructure is susceptible to aging degradation just like the rest of this country`s infrastructure. A critical component of the water supply system is the flood gate that controls the outflow from dams.Long steel rods called tendons attach these radial gates to the concrete in the dam. The tendons are typically forty feet long and over one inch in diameter. Moisture may seep into the grout around the tendons and cause corrosion. Lawrence Livermore National Laboratory is working with the California Department of Water Resources to develop advanced ultrasonic techniques for nondestructively inspecting their tendons. A unique transducer was designed and fabricated to interrogate the entire tendon. A robust,portable unit was assembled that included a computer controlled data acquisition system and specialized data processing software to analyze the ultrasonic signals. This system was tested on laboratory specimens and is presently being fielded at two dam sites.

Physical Description

9 p.

Notes

OSTI as DE98052283

Other: FDE: PDF; PL:

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  • SPIE non-destructive evaluation techniques for aging infrastructure and manufacturing, San Antonio, TX (United States), 31 Mar - 2 Apr 1998

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  • Other: DE98052283
  • Report No.: UCRL-JC--128413
  • Report No.: CONF-980334--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 641312
  • Archival Resource Key: ark:/67531/metadc691814

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • October 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 6, 2017, 6:18 p.m.

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Thomas, G. & Brown, A. Ultrasonic evaluation of flood gate tendons, article, October 1, 1997; California. (digital.library.unt.edu/ark:/67531/metadc691814/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.