Effects of Stiffener/Rib Separation on Damage Growth and Residual Strength

Kan, H.P.; Mahler, M.

doi:10.21949/1403762

i

Effects of Stiffener/Rib Separation on Damage Growth and Residual Strength

Supporting Files

1996-05-01
By Kan, H.P. ; Mahler, M.

File Language:

English

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Creators:

Kan, H.P. ; Mahler, M.
Corporate Creators:

Northrop Grumman Corporation. Military Aircraft Division
Corporate Contributors:

United States. Federal Aviation Administration. Office of Aviation Research
Subject/TRT Terms:
Publication/ Report Number:

DOT/FAA/AR-95/12
DOI:

https://doi.org/10.21949/1403762
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Federal Aviation Administration. Office of Aviation Research
Abstract:

Two existing composite aircraft structures were used to evaluate the effects of skin/stiffener separation on the residual strength of the structures. These structures are basically compression dominated upper wing structures designed to comply with the impact damage tolerance requirements. The severity of impact damage and delamination were analytically compared with that of skin/stiffener disbond. Critical disbond sizes were determined so the residual strengths of the structures are comparable to those obtained from impact damage tolerance designs. A damage tolerance certification approach based on the results of this study was recommended. The approach is to prevent local buckling in the disbond region under the applied load that governs the damage tolerance design for impact damage and delamination. This would lead to a critical disbond length for the structure that has the same residual strength capability as in the case of impact damage and delamination.
Format:

DOC
Download URL:

https://rosap.ntl.bts.gov/view/dot/12890/dot_12890_DS1.pdf
File Type:

[PDF - 651.60 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:3e7bcc1508644a824f732903e429f131c2e6c5e5a00c9e903948b8b5ec9287a51b711e59fd9db5a6c786e4ac69a615accdfa2dcc78275623a1134733cfc4afff

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File Language:

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