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Acoustical Imaging Cameras for the Inspection and Condition Assessment of Hydraulic Structures

机译:用于水工结构检测和状态评估的声学成像相机

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摘要

This Coastal and Hydraulics Engineering Technical Note (CHETN) describes the initial results of an investigation to determine the feasibility of using acoustical imaging for underwater inspection of structures. Visibility in clear water for the human eye and optical systems such as video cameras extends to about 15 m with appropriate lighting. However, the lack of visibility caused by the presence of suspended material in some rivers and impoundments presents many mission problems for personnel of the U.S. Army Corps of Engineers. Typical situations in which lack of visibility causes problems include assessing conditions of underwater structures such as gates and concrete piers, which are Operation and Maintenance issues; positioning of float-in structures, a construction issue; the investigation of archeological sites; and detection of endangered species. Currently, condition assessments typically involve the use of divers to inspect and record the condition of underwater structural components. This is expensive and often poses the risk of personal injury to the divers. Ultrasonic imaging system technology originally developed for the medical field helps provide potential solutions to the problems of poor visibility in turbid water. The U.S. Army Engineer Research and Development Center (ERDC) in Vicksburg purchased an acoustical camera to evaluate and further develop its capability as a tool to aid in the inspection of structures in turbid water.

著录项

  • 作者

    Evans, JA;

  • 作者单位
  • 年度 2010
  • 页码 1-14
  • 总页数 14
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工业技术;
  • 关键词

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