Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/2053
Title: Acoustical imaging cameras for the inspection and condition assessment of hydraulic structures
Authors: Evans, James A.
Keywords: Acoustical imaging systems
Arrays
Beams
Camera
Didson software
Forward-looking sonars
Ultrasonic systems
Underwater inspection
Issue Date: Aug-2010
Publisher: Coastal and Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical note (Coastal and Hydraulics Engineering (U.S.)) ; IX-23.
Description: Technical note
INTRODUCTION: 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.
URI: http://hdl.handle.net/11681/2053
Appears in Collections:CHETN - SECTION 09 - Navigation

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