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12 May 1995 Using sonic caliper tools for sewer pipe inspection
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Damage to municipal wastewater systems has received much attention over the past decade. Many new rehabilitation methods have been developed. Improved inspection methods have not kept pace. The standard and accepted tool is video inspection which is valuable, but has limitations. A complementary system for large line inspections is the caliper tool. Caliper tools are deployed like video tools, and provide direct measurements to show displacement, corrosion, debris, alignment, or other parameters in the inspected pipe. Several types of caliper tools are discussed and examples of field and laboratory programs are presented.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ted O. Price "Using sonic caliper tools for sewer pipe inspection", Proc. SPIE 2454, Nondestructive Evaluation of Aging Utilities, (12 May 1995);

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