Tensile Strain Capacity Prediction Model of an X80 Pipeline with Improper Transitioning and Undermatched Girth Weld
As an important component of strain-based design, the tensile strain capacity (TSC) concept has been extensively used for pipelines that experience expectable plastic strain for both installation and service. However, some stress-based designed pipelines have experienced unforeseen plastic strain in...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/20/7134 |
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| author | Hongyuan Chen Lianshuang Dai Heng Xuan Xiongxiong Gao Kun Yang Lei Wang Qiang Chi Chunyong Huo |
| author_facet | Hongyuan Chen Lianshuang Dai Heng Xuan Xiongxiong Gao Kun Yang Lei Wang Qiang Chi Chunyong Huo |
| author_sort | Hongyuan Chen |
| collection | DOAJ |
| description | As an important component of strain-based design, the tensile strain capacity (TSC) concept has been extensively used for pipelines that experience expectable plastic strain for both installation and service. However, some stress-based designed pipelines have experienced unforeseen plastic strain in the past decade that resulted in failure. It seems that the tensile strain capacity has gradually become an important requirement for geohazard risk management and pipeline maintenance of stress-based design pipelines. The tensile strain capacity of an X80 pipeline is investigated. The assessment in this work was based on the fracture initiation–control-based limit state. This limit state corresponds to the onset of stable tearing and generally provides a reasonably conservative estimate. Besides that, factors such as wall thickness, material’s strain hardening capacity, toughness, weld strength mismatch, HAZ (heat-affected zone) softening, pipe wall thickness, high–low misalignment, and internal pressure were also investigated to construct a prediction model of the X80 vintage pipeline. |
| first_indexed | 2024-03-09T19:53:54Z |
| format | Article |
| id | doaj.art-37ab4f90e8444fe984c1c129429607ef |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T19:53:54Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-37ab4f90e8444fe984c1c129429607ef2023-11-24T01:02:46ZengMDPI AGMaterials1996-19442022-10-011520713410.3390/ma15207134Tensile Strain Capacity Prediction Model of an X80 Pipeline with Improper Transitioning and Undermatched Girth WeldHongyuan Chen0Lianshuang Dai1Heng Xuan2Xiongxiong Gao3Kun Yang4Lei Wang5Qiang Chi6Chunyong Huo7State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi’an 710077, ChinaChina Oil & Gas Piping Network Corporation, Beijing 100013, ChinaPipeChina Southwest Pipeline Company, Chengdu 610095, ChinaState Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi’an 710077, ChinaState Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi’an 710077, ChinaState Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi’an 710077, ChinaState Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi’an 710077, ChinaState Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi’an 710077, ChinaAs an important component of strain-based design, the tensile strain capacity (TSC) concept has been extensively used for pipelines that experience expectable plastic strain for both installation and service. However, some stress-based designed pipelines have experienced unforeseen plastic strain in the past decade that resulted in failure. It seems that the tensile strain capacity has gradually become an important requirement for geohazard risk management and pipeline maintenance of stress-based design pipelines. The tensile strain capacity of an X80 pipeline is investigated. The assessment in this work was based on the fracture initiation–control-based limit state. This limit state corresponds to the onset of stable tearing and generally provides a reasonably conservative estimate. Besides that, factors such as wall thickness, material’s strain hardening capacity, toughness, weld strength mismatch, HAZ (heat-affected zone) softening, pipe wall thickness, high–low misalignment, and internal pressure were also investigated to construct a prediction model of the X80 vintage pipeline.https://www.mdpi.com/1996-1944/15/20/7134strain-based designweld jointtensile strain capacityvintage pipelineX80 |
| spellingShingle | Hongyuan Chen Lianshuang Dai Heng Xuan Xiongxiong Gao Kun Yang Lei Wang Qiang Chi Chunyong Huo Tensile Strain Capacity Prediction Model of an X80 Pipeline with Improper Transitioning and Undermatched Girth Weld Materials strain-based design weld joint tensile strain capacity vintage pipeline X80 |
| title | Tensile Strain Capacity Prediction Model of an X80 Pipeline with Improper Transitioning and Undermatched Girth Weld |
| title_full | Tensile Strain Capacity Prediction Model of an X80 Pipeline with Improper Transitioning and Undermatched Girth Weld |
| title_fullStr | Tensile Strain Capacity Prediction Model of an X80 Pipeline with Improper Transitioning and Undermatched Girth Weld |
| title_full_unstemmed | Tensile Strain Capacity Prediction Model of an X80 Pipeline with Improper Transitioning and Undermatched Girth Weld |
| title_short | Tensile Strain Capacity Prediction Model of an X80 Pipeline with Improper Transitioning and Undermatched Girth Weld |
| title_sort | tensile strain capacity prediction model of an x80 pipeline with improper transitioning and undermatched girth weld |
| topic | strain-based design weld joint tensile strain capacity vintage pipeline X80 |
| url | https://www.mdpi.com/1996-1944/15/20/7134 |
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