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Shot peening for Ti-6Al-4V alloy compressor bladesA text program was conducted to determine the effects of certain shot-peening parameters on the fatigue life of the Ti-6Al-4V alloys as well as the effect of a demarcation line on a test specimen. This demarcation line, caused by an abrupt change from untreated surface to shot-peened surface, was thought to have caused the failure of several blades in a multistage compressor at the NASA Lewis Research Center. The demarcation line had no detrimental effect upon bending fatigue specimens tested at room temperature. Procedures for shot peening Ti-6Al-4V compressor blades are recommended for future applications.
Document ID
19870011133
Document Type
Technical Publication (TP)
Authors
Carek, Gerald A. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 5, 2013
Publication Date
April 1, 1987
Subject Category
STRUCTURAL MECHANICS
Report/Patent Number
NASA-TP-2711
E-3430
NAS 1.60:2711
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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