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Radial Cracks Would Signal Wearout Of Turbine BladesNonfatal defects made to appear before fatal ones. Proposed to design turbine blades to crack radially before they crack chordwise. Advance radial cracking promoted in design by adjusting thermal stresses and net bending stresses. Prior appearance of radial crack or cracks in used blade serves as warning that more-threatening chordwise crack or cracks may subsequently appear. Blade replaced before it fails.
Document ID
19900000291
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Paulus, Donald E. (United Technologies Corp.)
Date Acquired
August 14, 2013
Publication Date
June 1, 1990
Publication Information
Publication: NASA Tech Briefs
Volume: 14
Issue: 6
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
MFS-28363
Accession Number
90B10291
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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