Nonfatal 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.
Radial Cracks Would Signal Wearout Of Turbine Blades
NASA Tech Briefs ; 14 , 6
1990-06-01
Miscellaneous
No indication
English
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