Paper Title:
An Experimental Study on the Pre-Strain Effect of API 5L X65 Pipeline for Natural Gas Transmission
  Abstract

Pipelines for natural gas transmission may be subjected to plastic deformation by the outside force such as ground subsidence, ground liquefaction, cold bending and mechanical damage. Plastic deformation affects the tensile properties and fracture toughness. Tensile test, Crack tip opening displacement test and Charpy impact test were conducted on an API 5L X65 pipe to investigate the mechanical properties of pipeline subjected to plastic deformation. Axial tensile pre-strain up to approximately 10% was applied to plate-type tensile specimens cut from the API 5L X65 pipe prior to mechanical testing. Tensile test revealed that the yield strength and the tensile strength increased with increasing tensile pre-strain. However, the CTOD and Charpy impact energy values for crack initiation decreased with increasing tensile pre-strain.

  Info
Periodical
Key Engineering Materials (Volumes 326-328)
Edited by
Soon-Bok Lee and Yun-Jae Kim
Pages
1063-1066
DOI
10.4028/www.scientific.net/KEM.326-328.1063
Citation
J. H. Baek, Y. P. Kim, W. S. Kim, C. S. Seok, "An Experimental Study on the Pre-Strain Effect of API 5L X65 Pipeline for Natural Gas Transmission", Key Engineering Materials, Vols. 326-328, pp. 1063-1066, 2006
Online since
December 2006
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Price
$32.00
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