System and method for non-destructive, in situ, positive material identification of a pipe
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United States of America Patent
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Jan 30, 2018
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app pub date -
Dec 9, 2014
filing date -
Jun 27, 2014
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Abstract
A system and method for non-destructive, in situ, positive material identification of a pipe selects three test areas that are separated axially and circumferentially from one another and then polishes a portion of each test area. Within each polished area, a non-destructive test device is used to collect mechanical property data and another non-destructive test device is used to collect chemical property data. An overall mean for the mechanical property data, and for the chemical property data, is calculated using at least two data collection runs. The means are compared to a known material standard to determine, at a high level of confidence, ultimate yield strength and ultimate tensile strength within +/−10%, a carbon percentage within +/−25%, and a manganese percentage within +/−20% of a known material standard.
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