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

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 ISBN: 1794066489     ISBN-13: 9781794066489
Publisher: Independently Published
OUR PRICE: $20.69  

Binding Type: Paperback
Published: January 2019
* Out of Print *
Additional Information
BISAC Categories:
- Science | Space Science
Physical Information: 0.1" H x 8.5" W x 11" L (0.31 lbs) 50 pages
 
Descriptions, Reviews, Etc.
Publisher Description:
In April 2008, NASA-STD-5009 established a requirement that only sensitivity level 4 penetrants are acceptable for NASA Standard Level liquid penetrant inspections. 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 (POD) of sensitivity level 3 and level 4 penetrants using both Method A and Method D inspection processes. POD demonstration tests were performed on 6061-Al, Haynes 188 and Ti-6Al-4V crack panel sets. The study results strongly support the conclusion that sensitivity level 3 penetrants are acceptable for NASA Standard Level inspections. NASA/TM-2011-215869, 2011-00999 Parker, Bradford H. Goddard Space Flight Center
 
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