Stress Characterization by Local Magnetic Measurements
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
The US natural gas transmission pipeline system consists in excess of 90,000 miles of gathering lines, 280,000 miles of transmission lines and 835,000 miles of distribution mains and lines. Since transmission lines transport natural gas at high pressures, the failure of a pipeline can result in catastrophic consequences. Sections of the transmission pipeline that have been in operation for several years are prone to the effects of corrosion and often suffer from mechanical damage. Pipelines are periodically inspected to assess their condition using a tool called “a pig.” Since the inspection of the transmission lines is an expensive procedure it is extremely important to infer information as accurately as possible about the condition of the pipeline.