[특허]Method for determining a parameter characteristic of the fatigue state of a part

[미국특허] Method for determining a parameter characteristic of the fatigue state of a part 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01M-015/14
출원번호	UP-0666384 (2005-10-26)
등록번호	US-7712376 (2010-06-03)
우선권정보	EP-04025821(2004-10-29)
국제출원번호	PCT/EP2005/055557 (2005-10-26)
§371/§102 date	20070426 (20070426)
국제공개번호	WO06/045811 (2006-05-04)
발명자 / 주소	Bode, Andreas Gobrecht, Edwin
출원인 / 주소	Siemens Aktiengesellschaft-Muenchen
인용정보	피인용 횟수 : 2 인용 특허 : 14

초록 ▼

A method for determining an approximate value for a parameter characteristic of the fatigue state of a component as a result of a time-varying stress to which it is subjected by means of a number of load cycles should, itself, during comparatively lengthy stress cycles, enable a prognosis concerning the current fatigue state of the component, this prognosis being, in particular, adapted to the needs and suited for the real-time determination of maintenance intervals. To this end, in addition to optionally already fully completed load cycles, a first partially completed load cycle is also taken into consideration during the determination of the parameter, whereby temporary stress values for phases that have not yet been run through of the partially completed load cycle are, together with a predetermined fixed value, taken into consideration.

대표청구항 ▼

The invention claimed is: 1. A method for determining an approximate value for a parameter characteristic of a fatigue state of a component as a result of a time-varying stress, comprising: determining the approximate value based upon a partly completed load cycle, including; determining a temporary stress value for a unexecuted phase of the partly completed load cycle by a predetermined values and determining an intermediate value, wherein the intermediate value is determined based upon a difference between a global maximum and a global minimum of a previously occurred phase of the partly completed load cycle, and operating the component with consideration of a statement of a residual lifetime or a prognosis of a future maintenance interval of the component based on the approximate value. 2. The method as claimed in claim 1, wherein the predetermined value is fixed. 3. The method as claimed in claim 1, wherein the predetermined value is zero. 4. The method as claimed in claim 1, wherein an overall stress cycle extends over months. 5. The method as claimed in claim 1, wherein an overall stress cycle extends over years. 6. The method as claimed in claim 1, wherein a tension-induced stress on the component is represented in a load-time diagram. 7. The method as claimed in claim 1, wherein the component is a component of a turbine. 8. The method as claimed in claim 7, wherein turbine is a steam turbine.

이 특허에 인용된 특허 (14) 인용/피인용 타임라인 분석

Long,Wayne R.; Booth,Michael L.; Waller,Aaron D.; Holme,Anders; Ørke,Per Reidar; Frafjord,Erik; Gjedebo,Jon Grude, Equipment component monitoring and replacement management system.
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Wolf, Thorsten, Method and device for operating a steam power plant, in particular in the part-load range.
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Gotoh,Jinichiro; Hayasaka,Yasushi; Sakurai,Shigeo; Ikeda,Hiraku, Method and system for diagnosing state of gas turbine.
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Swaminathan V. P. (San Antonio TX) Marloff Richard H. (Monroeville PA), Method for evaluating relationship between the size of discontinuity indications from non-destructive examination of a t.
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Bode, Andreas, Method for monitoring the state of turbines based on their coasting time.
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Braschel Reinhold (Stuttgart DEX) Miksch Manfred (Erlangen DEX) Schiffer Rolf (Hagenau DEX), Method of monitoring fatigue of structural component parts, for example, in nuclear power plants.
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Namburi, Adi Narayana, Method of on-line monitoring of radial clearances in steam turbines.
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Meyer,Eric S.; Fields,Scott S.; Knopp,Kenneth L.; Sermersheim,Jeffrey S., Methods and systems for analyzing structural test data.
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Yang, Ling; Falsetti, Robert, Methods and systems for evaluating defects in metals.
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Meyer,Eric S.; Fields,Scott S.; Knopp,Ken L.; Sermersheim,Jeffrey S., Methods and systems for modeling stress intensity solutions for integrally stiffened panels.
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Marcelle Kenneth A. W. (Schenectady NY) Chiang Kenneth H. (Schenectady NY) Houpt Paul K. (Schenectady NY) Bonissone Piero P. (Schenectady NY) Weiss Joseph (Cupertino CA), Steam turbine fuzzy logic cyclic control method and apparatus therefor.
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Kauffman,Eric J.; Rucigay,Richard J.; Christensen,Troy P., System and method for processing operation data obtained from turbine operations.
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Quentin George Heinz ; Yannone Robert Alfred, System to assess the starting performance of a turbine.
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Gobrecht Edwin,DEX ; Langbein Rolf,DEX, Turbine guide and a method for regulating a load cycle process of a turbine.
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이 특허를 인용한 특허 (2) 인용/피인용 타임라인 분석

Vieira, Hilario, Method and a device for monitoring an engine.
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Kunze, Ulrich; Römpke, Arno, Method for operating an industrial scale installation and guidance system for same.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Method for determining a parameter characteristic of the fatigue state of a part 원문보기