NASA Technical Reports Server (NTRS) 20060048509: Advanced Damage Tolerance Analysis of International Space Station Pressure Wall Welds

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by  NASA Technical Reports Server (NTRS)

Source of Acquisition
I NASA Marshall Space Flight Center
MSFC Technology Expo 2006 -Advanced Damage
Tolerance Analysis of International Space Station
Pressure Wall Welds
Abstract
EM20/MSFC has sponsored technology in the area of advanced damage tolerance
analysis tools used to analyze the International Space Station (ISS) pressure wall welds.
The ISS European modules did not receive non-destructive evaluation (NDE) inspection
after proof test. In final assembly configuration, most welds could only be inspected
from one side, and some welds were uninspectible. Therefore, advanced damage
tolerance analysis was required to determine the critical initial flaw sizes and predicted
safe life for the pressure wall welds. EM20 sponsored the development of a new finite
element tools using FEA-Crack and WARP3D to solve the problem. This presentation
gives a brief overview of the new analytical tools and the analysis results.
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