The Effect of Pressure on Burnthrough Susceptibility during in-Service Welding

Abstract:

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3D finite element models have been developed for X70 pipelines during the in-service welding. These models have been used to analyze the effects of internal pressure on the susceptibility of burnthrough. The work has showed that radial deflection could be regarded as a burnthrough limit. The same internal pressure has more important effect on the thinner materials and bigger diameter pipes. Internal pressure also has a great impact on the temperature profiles and the thermal cycle of inside surface. For thinner materials, Battelle’s 982°C temperature limit is overly conservative.

Info:

Periodical:

Edited by:

Dongye Sun, Wen-Pei Sung and Ran Chen

Pages:

2313-2317

DOI:

10.4028/www.scientific.net/AMM.121-126.2313

Citation:

W. Liu et al., "The Effect of Pressure on Burnthrough Susceptibility during in-Service Welding", Applied Mechanics and Materials, Vols. 121-126, pp. 2313-2317, 2012

Online since:

October 2011

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Price:

$35.00

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