Comparative Study of Prediction Methods for Fatigue Life Evaluation of an Integral Skin-Stringer Panel under Variable Amplitude Loading

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00010669%3A_____%2F15%3AN0000007" target="_blank" >RIV/00010669:_____/15:N0000007 - isvavai.cz</a>

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S1877705815016896" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1877705815016896</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.proeng.2015.08.050" target="_blank" >10.1016/j.proeng.2015.08.050</a>

Result language

angličtina

Original language name

Comparative Study of Prediction Methods for Fatigue Life Evaluation of an Integral Skin-Stringer Panel under Variable Amplitude Loading

Original language description

The study deals with an integral skin-stringer wing panel made of AA 7475-T7351. DT solutions for fatigue life prediction are based on computational methods. Crack growth is analysed under the flight by flight loading representative for a commuter aircraft. Crack growth predictions are performed by using both the linear damage accumulation principle and the FASTRAN retardation model. Different solutions of crack and structural geometry, which are expressed by the Ecorrection factor related to stress intensity factor assessment, are compared. The predicted crack growth and original data for the integral wing panel are discussed. The influence of geometry correction factors, which are defined by considering different hypotheses of their determination, is not significant for the integrally stiffened panel. In contrast, the retardation effect for the flight by flight loading, investigated alloy and structural part is significant. The FASTRAN retardation model gives underestimated predictions of approximately 10% compared with the experimental data. The reason underlying the increasing difference between the experimental data and numerical predictions of longest crack length propagation is discussed.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JU - Aeronautics, aerodynamics, aeroplanes

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Procedia Engineering

ISBN

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ISSN

1877-7058

e-ISSN

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Number of pages

8

Pages from-to

124-131

Publisher name

Elsevier Ltd.

Place of publication

Neuveden

Event location

Madeira, Portugalsko

Event date

Sep 1, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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