Creep fatigue life assessment of a pipe intersection with dissimilar material joint by linear matching method

Barbera, D., Chen, H. F. and Liu, Y. H. (2016) Creep fatigue life assessment of a pipe intersection with dissimilar material joint by linear matching method. Applied Mechanics and Materials, 853, pp. 366-371. (doi:10.4028/www.scientific.net/AMM.853.366)

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Abstract

As the energy demand increases the power industry has to enhance both efficiency and environmental sustainability of power plants by increasing the operating temperature. The accurate creep fatigue life assessment is important for the safe operation and design of current and future power plant stations. This paper proposes a practical creep fatigue life assessment case of study by the Linear Matching Method (LMM) framework. The LMM for extended Direct Steady Cycle Analysis (eDSCA) has been adopted to calculate the creep fatigue responses due to the cyclic loading under high temperature conditions. A pipe intersection with dissimilar material joint, subjected to high cycling temperature and constant pressure steam, is used as an example. The closed end condition is considered at both ends of main and branch pipes. The impact of the material mismatch, transitional thermal load, and creep dwell on the failure mechanism and location within the intersection is investigated. All the results demonstrate the capability of the method, and how a direct method is able to support engineers in the assessment and design of high temperature component in a complex loading scenario.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Barbera, Dr Daniele
Authors: Barbera, D., Chen, H. F., and Liu, Y. H.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Applied Mechanics and Materials
Publisher:Trans Tech Publications
ISSN:1660-9336
ISSN (Online):1662-7482
Published Online:30 September 2016
Copyright Holders:Copyright © 2016 Trans Tech Publications, Ltd
First Published:First published in Applied Mechanics and Materials 853: 366-371
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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