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Failure analysis of a cracked UH-1 tailboom former, P/N 205-030-807-97

Author: Scott M Grendahl; Benjamin Hardisky; Russell Yocum; U.S. Army Research Laboratory.; U.S. Army Aviation and Missile Command.
Publisher: Aberdeen Proving Ground, MD : Army Research Laboratory, [2006]
Series: ARL-TR (Aberdeen Proving Ground, Md.), 3828.
Edition/Format:   eBook : Document : National government publication : English
Summary:
The U.S. Army Aviation and Missile Command sent the U.S. Army Research Laboratory Weapons and Materials Research Directorate a UH-1 tailboom former (P/N 201030-807-97) from the U.S. Army Kwajalein Atoll Facility (USAKA) in the Marshall Islands for investigation. The component was being investigated due to the presence of cracks observed near bolt hole locations on the part. This component was quality deficient  Read more...
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Material Type: Document, Government publication, National government publication, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Scott M Grendahl; Benjamin Hardisky; Russell Yocum; U.S. Army Research Laboratory.; U.S. Army Aviation and Missile Command.
OCLC Number: 227893565
Notes: Title from PDF title page (viewed June 14, 2010).
"June 2006."
Description: 1 online resource (vi, 22 pages) : color illustrations.
Series Title: ARL-TR (Aberdeen Proving Ground, Md.), 3828.
Responsibility: prepared by Scott Grendahl, Benjamin Hardisky and Russell Yocum for U.S. Army Aviation and Missile Command.

Abstract:

The U.S. Army Aviation and Missile Command sent the U.S. Army Research Laboratory Weapons and Materials Research Directorate a UH-1 tailboom former (P/N 201030-807-97) from the U.S. Army Kwajalein Atoll Facility (USAKA) in the Marshall Islands for investigation. The component was being investigated due to the presence of cracks observed near bolt hole locations on the part. This component was quality deficient report exhibit number M24H90327. The material utilized to manufacture the former was specified to be clad 2024-T4 aluminum alloy sheet in accordance with QQ-A-362. It was superseded by QQ-A-250/5B, which was subsequently cancelled, and superseded by the current specification for clad 2024-T4 aluminum sheet, SAE-AMS-QQ-A-250-5. The part was characterized through nondestructive inspection, chemical analysis, optical microscopy, scanning electron microscopy, and mechanical testing.

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Primary Entity

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