NDE of PWA 1480 single crystal turbine blade material
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NDE of PWA 1480 single crystal turbine blade material

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Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

Subjects:

  • Turbines -- Blades.

Book details:

Edition Notes

StatementStanley J. Klima, Thomas W. Orange, and Robert L. Dreshfield.
SeriesNASA technical memorandum -- 106140., NASA technical memorandum -- 106140.
ContributionsOrange, Thomas W., Dreshfield, Robert L., United States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL14697367M

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NDE of PWA single crystal turbine blade material. By Robert L. Dreshfield, Thomas W. Orange and Stanley J. Klima. Abstract. Cantilever bending fatigue specimens were examined by fluorescent liquid penetrant and radioactive gas penetrant (Krypton) non-destructive evaluation (NDE) methods and tested. Specimens with cast, ground, or polished. EVALUATION OF PWA FOR LARGE SINGLE CRYSTAL IGT BLADE AI’PLICATIONS Dilip M. Shah and Alan Cetel MlS, Pratt 85 Whitney Main Street, E. Hartford, CT Abstract As a part of the Department of Energy “Land Based Turbine File Size: 1MB. NDE of PWA single crystal turbine blade material. By Robert L. Dreshfield, Stanley J. Klima and Thomas W. Orange. Abstract. Cantilever bending fatigue specimens were examined by fluorescent liquid penetrant and radioactive gas penetrant (Krypton) Nondestructive Evaluation (NDE) methods and tested. Specimens with cast, ground, or polished.   Nonlinear finite-element structural analyses were performed on the first stage high pressure fuel turbopump blade of the space shuttle main engine (SSME). These analyses examined the structural response and the dynamic characteristics at typical operating conditions. Single crystal material PWA was considered for the analyses.

  An atom-probe field-ion microscopy and analytical electron microscopy characterization of a PWA nickel-based single-crystal alloy has revealed a high number density of 5 to 10 nm diameter γ precipitates in the interior of coarse cuboidal γ′ precipitates in material that was heat-treated for 4 h at °C, 4 h at °C and 32 h at °C. In , Pratt & Whitney received the ASM International Engineering Materials Achievement Award for the development of single-crystal turbine blades. Technology history shows that a game changer such as single-crystal turbine blades usually entails a long-term process, typically 30 years or more. tion resistance) over PWA , the first nickel-base single crystal turbine alloy to enter production. PWA represents the first use of rhenium in a production single crystal superalloy. The alloy properties have been fully characterized and demonstrate . Finite element technique is employed through MARC finite element code to conduct the analyses on a hollow core SSME turbine blade made out of PWA single crystal material. Primary orientation of the single crystal superalloy was varied in increments of 2’, from 0 to 10”, from the [] direction.

The single-crystal turbine blade’s small size belies its complexity Yet this most ancient of skills is still in use today, and indeed is still being developed. Its most recent incarnation is arguably the most advanced procedure that has ever been undertaken in metals, and is . A turbine blade is the individual component which makes up the turbine section of a gas turbine or steam blades are responsible for extracting energy from the high temperature, high pressure gas produced by the turbine blades are often the limiting component of gas turbines. To survive in this difficult environment, turbine blades often use exotic materials like. single crystal turbine blades necessitated technical innovations particularly in the areas of obtaining high temperature gradients during sohdification and achieving single crystalhnity throughout the component. The columnar-grain and single crystal casting processes are shown szhematically in Fig. 8. Alloy PWA is a commercial alloy used as a blade material in gas turbine engines and noted for its high temperature mechanical properties. Alloy PWA was produced in a directionally solidified form having elongated columnar grains. Alloy is a commercial alloy which has been used as a gas turbine blade material.