EP1111366A3

Method for monitoring the creep behaviour of rotating components of a compressor or turbine stage

Abstract

The present invention relates to a method for monitoring the creep behavior of rotating components of a compressor or turbine stage. In the method, at least one test element (2) is mounted in a region of the compressor or turbine stage in which it is exposed to a comparable operating load as the component to be monitored. The test element (2) is examined after a predeterminable operating time of the component to be monitored. Finally, the creep behavior of the component to be monitored is derived from the creep behavior of the test element. The method enables the exact detection of the creep behavior or the creep damage of the component to be monitored during the lifetime of this component.

EP1111366A3, drawing sheet 1 — Sheet 1 of 1

Term

Term ended

Projected expiry passed 18 December 2020, 5.8 years ago.

1 sheet

Sheet 1

Every citation, both waysCites: the store holds 1 of 2

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
US5789680A	Cites	United States of America	Y	Search report	3,4,9,10,12-16
PATENT ABSTRACTS OF JAPAN vol. 010, no. 012 (P - 421) 17 January 1986 (1986-01-17)	Non-patent	–	–	Search report	–
PATENT ABSTRACTS OF JAPAN vol. 007, no. 048 (P - 178) 24 February 1983 (1983-02-24)	Non-patent	–	–	Search report	–
C.PERSSON & P.-O.PERSSON: "Evaluation of Service-Induced Damage and Restoration of Cast Turbine Blades", JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, no. 4, August 1993 (1993-08-01), pages 565 - 569, XP000394076	Non-patent	–	–	Search report	–

5 members in 3 offices

This recordMember, by publication datePriority claim

Priority claims4

Priority claims
Document	Office	Kind	Date
19962735	Germany	A	1999-12-23
19962735	Germany	–	1999-12-23
19962735	–	–	–
DE1999162735	–	–	–

Members5

Family members, oldest first
Document	Office	Kind
EP1111366A2	European Patent Office (EPO)	A2	2001-06-27
DE19962735A1	Germany	A1	2001-06-28
US2002019708A1	United States of America	A1	2002-02-14
US6568254B2	United States of America	B2	2003-05-27
EP1111366A3This record	European Patent Office (EPO)	A3	2004-01-07

13 legal events, as the office reported them to INPADOC

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	Event	Code
2006-05-17	Application deemed to be withdrawnWithdrawn18D	18D
2006-03-31	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA	STAA
2005-06-01	First examination report despatched17Q	17Q
2004-09-29	Designation fees paidAKX	AKX
2004-09-01	Request for examination filed17P	17P
2004-03-31	Party data changed (applicant data changed or rights of an application transferred)RAP1	RAP1
2004-01-07	Designated contracting statesAK	AK
2004-01-07	Request for extension of the european patentAX	AX
2003-11-21	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL
2002-04-17	Party data changed (applicant data changed or rights of an application transferred)RAP1	RAP1
2001-06-27	Designated contracting statesAK	AK
2001-06-27	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX
2001-05-11	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI

Method for monitoring the creep behaviour of rotating components of a compressor or turbine stage

Abstract

Term

Priority claims4

Members5

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Designated states2