Publication detail

Analysis of Fatigue Crack Growth under the Spectrum Loading

AUGUSTIN, P.

Original Title

Analysis of Fatigue Crack Growth under the Spectrum Loading

Type

journal article - other

Language

English

Original Abstract

This article describes the methodology of numerical simulation of fatigue crack growth under the spectrum loading and its application on integrally stiffened panels manufactured using high speed cutting. A load sequence generated from the spectrum of B737 airplane similar to the standardized load sequence for flight simulation tests on transport aircraft wing structures TWIST was applied. The methodology starts by the determination of stress intensity factors from FEM results using crack closure technique. Subsequent crack growth analysis is done in NASGRO and uses a description of crack growth rates by the Forman-Newman-de Koning relationship. Two crack growth models were tested: non interaction and Willenborg model. Verification of analyses was based on tests of integral panels and CCT specimens performed under the spectrum loading at the IAE laboratory. In order to determine crack growth rate data, additional tests on CCT specimens using the constant amplitude loading were also carried out.

Keywords

crack growth, spectrum loading, fatigue, fracture mechanics, integrally stiffened panels

Authors

AUGUSTIN, P.

RIV year

2007

Released

1. 11. 2007

ISBN

1211-877X

Periodical

Letecký zpravodaj

Year of study

2007

Number

3

State

Czech Republic

Pages from

18

Pages to

21

Pages count

4

BibTex

@article{BUT45327,
  author="Petr {Augustin}",
  title="Analysis of Fatigue Crack Growth under the Spectrum Loading",
  journal="Letecký zpravodaj",
  year="2007",
  volume="2007",
  number="3",
  pages="4",
  issn="1211-877X"
}