公开(公告)号：US20060025937A1

公开(公告)日：2006-02-02

申请号：US10710702

申请日：2004-07-29

申请人： Ming Gao ,  Sergio Limon

发明人： Ming Gao ,  Sergio Limon

IPC分类号： G01B5/28

CPC分类号： G01N3/28 ,  G01N2203/0064 ,  G01N2203/0066 ,  G01N2203/0218 ,  G01N2203/0274

摘要： A method for leak-before-rupture assessment including using a failure assessment diagram (FAD) assessment curve from a crack initiation based FAD analysis to analyze a crack in a material; and using a ductile tearing analysis in conjunction with the FAD assessment curve to detect a crack exhibiting at least one of ductile tearing stability and tearing instability prone to rupture during growth of the crack.

摘要翻译： 一种用于破裂前泄漏的方法，包括使用来自基于裂纹发生的FAD分析的故障评估图（FAD）评估曲线来分析材料中的裂纹; 并且使用与FAD评估曲线结合的延性撕裂分析来检测在裂纹生长期间易于破裂的延展性撕裂稳定性和撕裂不稳定性中的至少一种的裂纹。

公开(公告)号：US07039528B2

公开(公告)日：2006-05-02

申请号：US10710702

申请日：2004-07-29

申请人： Ming Gao ,  Sergio Limon

发明人： Ming Gao ,  Sergio Limon

IPC分类号： G01B3/34 ,  G01B5/28

CPC分类号： G01N3/28 ,  G01N2203/0064 ,  G01N2203/0066 ,  G01N2203/0218 ,  G01N2203/0274

摘要： A method for leak-before-rupture assessment including using a failure assessment diagram (FAD) assessment curve from a crack initiation based FAD analysis to analyze a crack in a material; and using a ductile tearing analysis in conjunction with the FAD assessment curve to detect a crack exhibiting at least one of ductile tearing stability and tearing instability prone to rupture during growth of the crack.

摘要翻译： 一种用于破裂前泄漏的方法，包括使用来自基于裂纹发生的FAD分析的故障评估图（FAD）评估曲线来分析材料中的裂纹; 并且使用与FAD评估曲线结合的延性撕裂分析来检测在裂纹生长期间易于破裂的延展性撕裂稳定性和撕裂不稳定性中的至少一种的裂纹。

公开(公告)号：US07414395B2

公开(公告)日：2008-08-19

申请号：US11277523

申请日：2006-03-27

申请人： Ming Gao ,  Sergio Limon ,  Richard Clark McNealy ,  Ron Sherstan

发明人： Ming Gao ,  Sergio Limon ,  Richard Clark McNealy ,  Ron Sherstan

IPC分类号： G01N27/72

CPC分类号： G01N27/82

摘要： The method for detecting stress corrosion cracking (SCC) of pipelines, comprising the steps of: identifying pipeline locations and pipeline conditions that are amenable to inspection by a magnetic flux inline tool and by a TFI tool; performing two inspections on the pipeline, one inspection performed using the magnetic flux inline (MFL) tool and an other inspection performed using the TFI tool; aligning signal features resulting from the two inspections; identifying TFI signals occurring above a specified threshold; identifying MFL signals for a section of pipeline corresponding to the identified TFI signals; for the identified TFI signals, determining whether the MFL signals are below a second threshold level; designating the sections of the pipeline corresponding to identified TFI signals above the threshold and below the second threshold as a potential corrosion feature; identifying TFI signals that exceed a defined metal loss percentage; measuring a width and length of the signal features, and if the width and length of the signal feature exceed threshold crack width and length values, designating as a potential corrosion feature section of pipeline corresponding to the identified TFI signals.

摘要翻译： 一种用于检测管道应力腐蚀开裂（SCC）的方法，其特征在于包括以下步骤：识别管道位置和管线条件，以便易于通过磁力线性工具和TFI工具进行检查; 对管道进行两次检查，使用磁力在线（MFL）工具执行一次检查，并使用TFI工具执行其他检查; 对准两次检查产生的信号特征; 识别发生在指定阈值以上的TFI信号; 识别对应于所识别的TFI信号的一段管道的MFL信号; 对于所识别的TFI信号，确定MFL信号是否低于第二阈值电平; 指定对应于高于阈值并低于第二阈值的识别的TFI信号的管线的部分作为潜在腐蚀特征; 识别超过定义的金属损失百分比的TFI信号; 测量信号特征的宽度和长度，如果信号特征的宽度和长度超过阈值裂缝宽度和长度值，则指定为与所识别的TFI信号相对应的管线的潜在腐蚀特征部分。

公开(公告)号：US20070222436A1

公开(公告)日：2007-09-27

申请号：US11277523

申请日：2006-03-27

申请人： Ming Gao ,  Sergio Limon ,  Richard Clark McNealy ,  Ron Sherstan

发明人： Ming Gao ,  Sergio Limon ,  Richard Clark McNealy ,  Ron Sherstan

IPC分类号： G01N27/82

CPC分类号： G01N27/82

摘要： The method for detecting stress corrosion cracking (SCC) of pipelines, comprising the steps of: identifying pipeline locations and pipeline conditions that are amenable to inspection by a magnetic flux inline tool and by a TFI tool; performing two inspections on the pipeline, one inspection performed using the magnetic flux inline (MFL) tool and an other inspection performed using the TFI tool; aligning signal features resulting from the two inspections; identifying TFI signals occurring above a specified threshold; identifying MFL signals for a section of pipeline corresponding to the identified TFI signals; for the identified TFI signals, determining whether the MFL signals are below a second threshold level; designating the sections of the pipeline corresponding to identified TFI signals above the threshold and below the second threshold as a potential corrosion feature; identifying TFI signals that exceed a defined metal loss percentage; measuring a width and length of the signal features, and if the width and length of the signal feature exceed threshold crack width and length values, designating as a potential corrosion feature section of pipeline corresponding to the identified TFI signals.

摘要翻译： 一种用于检测管道应力腐蚀开裂（SCC）的方法，其特征在于包括以下步骤：识别管道位置和管线条件，以便易于通过磁力线性工具和TFI工具进行检查; 对管道进行两次检查，使用磁力在线（MFL）工具执行一次检查，并使用TFI工具执行其他检查; 对准两次检查产生的信号特征; 识别发生在指定阈值以上的TFI信号; 识别对应于所识别的TFI信号的一段管道的MFL信号; 对于所识别的TFI信号，确定MFL信号是否低于第二阈值电平; 指定对应于高于阈值并低于第二阈值的识别的TFI信号的管线的部分作为潜在腐蚀特征; 识别超过定义的金属损失百分比的TFI信号; 测量信号特征的宽度和长度，如果信号特征的宽度和长度超过阈值裂缝宽度和长度值，则指定为与所识别的TFI信号相对应的管线的潜在腐蚀特征部分。