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51316-7155-Effect of Sidegroove Root Configuration on Edge Fracture on DCB Test

Picture for Effect of Sidegroove Root Configuration on Edge Fracture on DCB Test
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In this paper the influence of various sidegroove root configurations on edge fracture Double Cantilever Beam tests and FEM analysis results were focused upon because different types of sidegroove roots are considered to change the stress concentration at the bottom of sidegroove and therefore affects the incidence of edge crack occurrence in the DCB test.

Product Number: 51316-7155-SG
ISBN: 7155 2016 CP
Author: Jun Nakamura
Publication Date: 2016
Industry: Science of Corrosion
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$20.00
$20.00

The Double Cantilever Beam (DCB) test method standardized in the NACE TM0177 is increasingly applied as a quality assurance test to specify the performance of carbon and low alloy steels for sour service. The DCB test can contribute to the quantitative evaluation of fracture toughness in a specific environment via assessment of the crack arrest of a pre-cracked specimen.The test method has been modified and regulated tightly from the view point of specimen geometry test environment and initial stress intensity factor controlled by arm displacement to obtain highly reliable test results. In this paper the influence of various sidegroove root configurations on edge fracture DCB tests and FEM analysis results were focused upon because different types of sidegroove roots are considered to change the stress concentration at the bottom of sidegroove and therefore affects the incidence of edge crack occurrence in the DCB test. Decreasing the incidence of edge crack with increasing sidegroove root is discussed from the viewpoint of fracture mechanics.

 

Key words: Downloadable, Double Cantilever Beam, Edge fracture, Sulfide stress cracking, FEM

The Double Cantilever Beam (DCB) test method standardized in the NACE TM0177 is increasingly applied as a quality assurance test to specify the performance of carbon and low alloy steels for sour service. The DCB test can contribute to the quantitative evaluation of fracture toughness in a specific environment via assessment of the crack arrest of a pre-cracked specimen.The test method has been modified and regulated tightly from the view point of specimen geometry test environment and initial stress intensity factor controlled by arm displacement to obtain highly reliable test results. In this paper the influence of various sidegroove root configurations on edge fracture DCB tests and FEM analysis results were focused upon because different types of sidegroove roots are considered to change the stress concentration at the bottom of sidegroove and therefore affects the incidence of edge crack occurrence in the DCB test. Decreasing the incidence of edge crack with increasing sidegroove root is discussed from the viewpoint of fracture mechanics.

 

Key words: Downloadable, Double Cantilever Beam, Edge fracture, Sulfide stress cracking, FEM

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51316-7152-Self-healing protection of pipeline corrosion by epoxy coating with preloaded inhibitors

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