Mechanical and metallurgical implications of non-ideal geometry in circumferential pipeline welds

圆周管道焊缝中非理想几何形状的机械和冶金影响

• 批准号: 507483-2016
• 负责人: Mendez, Patricio
• 金额: $ 4.44万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=659554
• 关键词: Mechanical; metallurgical; implications; non; ideal

This research and training project focuses on developing a model to predict root defects in pipeline welds with non-ideal joint geometry. Deviations from ideal joint geometry exist due to a variety of unavoidable causes including manufacturing tolerances on pipe dimensions and thermal distortion of the weld joint during the welding process. To address these concerns, industrial practitioners rely heavily on historical experience and established guidelines with limited scientific basis and an unknown range of applicability. This project will study, for the first time in a scientific and systematic way, the mechanisms that relate root defects to variation in joint geometry. The approach will rely heavily on the experimental equipment and mathematical modelling expertise at the Canadian Centre for Welding and Joining at the University of Alberta. The proposal will involve the training of three MSc and six undergraduate students. Experimental techniques, computational weld modelling, and advanced analysis techniques will be utilized together to guide the development of a generalized model applicable to non-ideal welded joints. The results of the project will be of immediate use to the partner company (Enbridge), and will provide all Canadian pipeline operators and fabricators with the information and knowledge necessary to produce high quality, reliable, and economical welded joints the first time, every time.

该研究和培训项目致力于开发一种预测具有非理想接头几何形状的管道焊缝根部缺陷的模型。由于各种不可避免的原因，包括管道尺寸的制造公差和焊接过程中焊接接头的热变形，导致了与理想接头几何形状的偏差。为了解决这些担忧，工业从业者严重依赖历史经验和既定的指导方针，但科学基础有限，适用范围未知。该项目将首次以科学和系统的方式研究根部缺陷与关节几何形状变化之间的关系。该方法将在很大程度上依赖于阿尔伯塔大学加拿大焊接和连接中心的实验设备和数学建模专业知识。该提案将涉及三名硕士和六名本科生的培训。实验技术、计算焊接模型和先进的分析技术将共同用于指导适用于非理想焊接接头的通用模型的开发。该项目的成果将立即用于合作伙伴公司(Enbridge)，并将为所有加拿大管道运营商和制造商提供必要的信息和知识，以便第一时间生产高质量、可靠和经济的焊接接头。