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首页> 外文会议>Second Pan-American Conference for Nondestructive Testing (PACNDT) and ASNT's International Chemical and Petroleum Industry Inspection Technology (ICPIIT) VII Topical Conference, Jun 18-22, 2001, Houston, Texas, USA >Reliability of Magnetic Flux Instrument Data
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Reliability of Magnetic Flux Instrument Data

机译：磁通量仪器数据的可靠性

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摘要

Reliable metal loss data of pipelines are important for the evaluation of economic risks from corrosion. Therefore, two sets of data were collected from four pipelines inspected with Magnetic Flux (MFI) and Ultrasonic instruments (UI), respectively. The expected measurements (UI) were classified and processes statistically by Descriptive Statistics and Linear Regression, and compared with the observed measurements (MFI), both data for the same corrosion defect points. Significant variations of the mean and standard deviations of metal loss percent were observed for each set of data as breakdowns and grouped by defect position. Furthermore, linear correlation of two set of data with an equation y= a*x + b, means the introduction of a dephasing factor between data.
机译：可靠的管道金属损耗数据对于评估腐蚀带来的经济风险非常重要。因此，分别从用磁通量（MFI）和超声波仪器（UI）检查的四个管道中收集了两组数据。通过描述性统计和线性回归对预期的测量值（UI）进行分类和统计处理，并与观察到的测量值（MFI）进行比较，得出相同腐蚀缺陷点的两个数据。对于每组数据，均观察到金属损耗百分比的平均值和标准偏差的显着变化，并按缺陷位置分组。此外，具有等式y = a * x + b的两组数据的线性相关性意味着在数据之间引入了相移因子。

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