Remaining strength assessment of dented pipe based on depth and strain based criteria

International Conference on Design, Energy, Materials and Manufacture

能源学;材料科学

Akbar, M.^1 ; Huda, F.^1 ; Dewi, D.K.^2

Department of Mechanical Engineering, Universitas Riau, Pekanbaru, Indonesia^1

Center of Technology for Machinery Industry, Agency for Assessment and Application of Technology, Tangerang, Indonesia^2

关键词: Acceptance criteria;    Applied loads;    Dented pipelines;    Integrity assessment;    Operation pressure;    Pipe-line systems;    Remaining strengths;    Static indentation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/539/1/012035/pdf
DOI  :  10.1088/1757-899X/539/1/012035

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

There are currently two methods which are used in feasibility operation of dented pipeline systems, namely depth based and strain based. In this research, both methods will be compared to determine conservatism degree of each method and as a guideline and considerations in the integrity assessment of pipeline system. The finite element method with including nonlinearities of material properties and dimension will be used as a tool in the analysis. Static indentation was held with using half ball indenter. Variations of applied load are 600 N, 1000 N, 1500 N, 2000 N, and 2500 N. The results of indentation are dent depth ratio (d/D) with value 1,93 %, 3,78 %, 5,53 %, 7,08 %, 10,63 %, and plastic strain with value 4,24 %, 5,87 %, 8,36 %, 11,43 %, and 12,93 %, respectively. Based on the Code, depth based criteria use d/D