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首页> 外文会议>2004 AGA operating section proceedings >The Dependence of Small Scale Steady State (S4)Critical Pressure on Pipe Geometry
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The Dependence of Small Scale Steady State (S4)Critical Pressure on Pipe Geometry

机译：小尺度稳态（S4）临界压力对管道几何形状的依赖性

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摘要

Crack growth analysis is used to investigate the specimen geometry dependence of the criticalrnpressure test results provided by the small-scale steady-state (S4) test. This study demonstrates that S4rncritical pressure is indeed dependent on the pipe diameter and standard dimension ratio (SDR), asrnanticipated. Stated another way, S4 critical pressure does not specifically characterize the rapid crackrnpropagation (RCP) resistance of the pipe resin. Rather, S4 critical pressure characterizes the RCPrnresistance of the pipe. An understanding of this geometry dependence is important, as it provides thernbasis for the efficient selection of pipe sizes for S4 critical pressure tests, as well as interpretation of S4rntest results. Comparison of measured and predicted critical pressure results demonstrate that the crackrngrowth analysis can be used to conservatively estimate the critical pressures for specific pipe geometries.
机译：裂纹扩展分析用于研究由小规模稳态（S4）测试提供的临界压力测试结果的试样几何形状依赖性。这项研究表明，S4临界压力确实取决于预期的管道直径和标准尺寸比（SDR）。换一种说法，S4临界压力没有专门表征管树脂的抗快速裂纹蔓延性（RCP）。而是，S4临界压力表征了管道的RCPrn电阻。了解这种几何关系很重要，因为它为有效选择S4临界压力测试的管道尺寸以及解释S4rntest结果提供了基础。测量和预测的临界压力结果的比较表明，裂纹扩展分析可用于保守地估计特定管道几何形状的临界压力。

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