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A Comparison of the Capability of Sensitivity Level 3 and Sensitivity Level 4 Fluorescent Penetrants to Detect Fatigue Cracks in Aluminum
Contributor(s): Nasa, National Aeronautics and Space Adm (Author)

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 ISBN: 1794292047     ISBN-13: 9781794292048
Publisher: Independently Published
OUR PRICE: $17.09  

Binding Type: Paperback
Published: January 2019
* Out of Print *
Additional Information
BISAC Categories:
- Science | Space Science
Physical Information: 0.05" H x 8.5" W x 11" L (0.19 lbs) 26 pages
 
Descriptions, Reviews, Etc.
Publisher Description:
Historically both sensitivity level 3 and sensitivity level 4 fluorescent penetrants have been used to perform NASA Standard Level inspections of aerospace hardware. In April 2008, NASA-STD-5009 established a requirement that only sensitivity level 4 penetrants were acceptable for inspections of NASA hardware. Having NASA contractors change existing processes or perform demonstration tests to certify sensitivity level 3 penetrants posed a potentially huge cost to the Agency. This study was conducted to directly compare the probability of detection sensitivity level 3 and level 4 penetrants using both Method A and Method D inspection processes. The study results strongly support the conclusion that sensitivity level 3 penetrants are acceptable for NASA Standard Level inspections Parker, Bradford, H. Goddard Space Flight Center NASA/TM-2009-215850, Rept-2010-00980
 
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