Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Reexamination Certificate
2007-04-17
2007-04-17
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
C073S804000, C073S808000, C073S810000, C073S811000, C073S813000, C073S815000, C073S821000, C073S845000, C073S865900
Reexamination Certificate
active
11104486
ABSTRACT:
A method of simulating life of a rotor blade mounting feature mounted in a complementary rotor disc mounting feature comprises the steps of providing two specimen mounting features (37) each having portions defining pressure faces matching in profile respective faces of the rotor blade mounting feature; providing a fixture (38) having two opposed mounting features (39) each having portions defining pressure faces (78) matching in profile respective faces of the rotor disc mounting feature; mounting the specimen mounting features (37) in the fixture mounting features (39); applying a first load to the specimen mounting features (37); measuring a strain in a region (86) of the fixture (38) between the fixture mounting features (39); applying a second load to the fixture (38), the second load being substantially perpendicular to the first load; and controlling the second load in response to the measured strain. A high cycle load may simultaneously be applied to the specimen mounting features (37). Claims are also included for an apparatus (10) for carrying out the method.
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Crabtree James S
Greenacre Paul A
McElhone Martin
Woodward Colin J
Kirkland, III Freddie
Lefkowitz Edward
Manelli Denison & Selter PLLC
Rolls-Royce plc
Taltavull W. Warren
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