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Procedure for life assessment of degraded steam turbine components and life diagnosis system.
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- FUJIYAMA Kazunari
- Heavy Apparatus Engineering Laboratory, Toshiba Corp.
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- KIMURA Kazushige
- Heavy Apparatus Engineering Laboratory, Toshiba Corp.
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- MURAMATSU Masamitsu
- Heavy Apparatus Engineering Laboratory, Toshiba Corp.
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- TSUNODA Eiji
- Toshiba Corp.
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- AOKI Hideo
- Fuchu Works, Toshiba Corp.
Bibliographic Information
- Other Title
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- 経年劣化を考慮した蒸気タービン部品の寿命評価手法と寿命診断システム
- ケイネン レッカ オ コウリョシタ ジョウキ タービン ブヒン ノ ジュミョウ
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Description
An investigation of steam turbine components retired after long-term service at elevated temperatures has clarified that one of the most typical characteristics of material degradation in Cr-Mo-V steel is softening, and that the mechanical properties necessary for life prediction such as creep and low cycle fatigue are affected by material degradation (softening).<br>As a typical example, this paper shows the quantitative relationships between the material hardness and these degraded mechanical properties for Cr-Mo-V rotor forgings. Creep and fatigue life assessment for steam turbine rotors could be more accurately made through the nondestructive measurement of hardness and the evaluation of the degraded creep and fatigue properties.<br>A life diagnosis system was developed based on the present procedure with a 32 bit super mini-computer and man-machine interfaces.<br>This system helps us perform easier and more sophisticated life diagnosis and maintenance of steam turbine main components used at high temperatures such as rotors, casings, valves, blades and bolts.
Journal
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- Journal of the Society of Materials Science, Japan
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Journal of the Society of Materials Science, Japan 37 (414), 315-321, 1988
The Society of Materials Science, Japan
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Details 詳細情報について
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- CRID
- 1390282680394050944
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- NII Article ID
- 110002298705
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- NII Book ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL BIB ID
- 3170653
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed