Fracture tests and analytical evaluation for pipe with non-aligned multiple flaws
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- IWAMATSU Fuminori
- Hitachi, Ltd., Research and Development Group
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- SAITO Koichi
- 日立GEニュークリア・エナジー株式会社
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- YOSHIDA Shinji
- 株式会社テプコシステムズ
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- TAKAGI Shunsuke
- 東京電力ホールディングス株式会社
Bibliographic Information
- Other Title
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- 段違い複数欠陥円筒に対する破壊試験および解析評価の検討
Abstract
<p>An applicability of flaw characterization rules provided by codes, such as JSME fitness-for-service code, to ductile fracture of non-aligned multiple flaws remains an issue of structural integrity evaluation. Hence, this paper deals with investigating evaluation of collapse load of a pipe with non-aligned flaws subjected to bending moment by experiments and analytical approach. Through-wall non-aligned flaws were introduced to 4-inch pipes made of austenitic stainless steel by electric discharge machining. 4-point bending tests of the pipe were conducted to observe collapse behavior and obtain load-displacement relationships. Flaw interactions depending on distances between two flaws were observed from the test results. Finite element models on the basis of the test conditions were generated and elasto-plastic analysis considering non-linear geometry were conducted. Twice elastic slope method was applied to the analysis results to estimate collapse loads. The estimated collapse loads can represent tendency of the test results and derive conservative results.</p>
Journal
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- The Proceedings of the Materials and Mechanics Conference
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The Proceedings of the Materials and Mechanics Conference 2016 (0), OS09-17-, 2016
The Japan Society of Mechanical Engineers
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Details 詳細情報について
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- CRID
- 1390282680847827072
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- NII Article ID
- 130007119632
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- ISSN
- 24242845
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed