Publication detail

Fractographic reconstitution of fatigue crack growth in integrally stiffened panels

KUNZ, J. KOVÁŘÍK, O. LAUSCHMANN, H. SIEGL, J. AUGUSTIN, P.

Original Title

Fractographic reconstitution of fatigue crack growth in integrally stiffened panels

Type

journal article - other

Language

English

Original Abstract

A research program was focused on design and experimental verification of fracture marking of integrally stiffened panels during the fatigue tests under flight-by-flight spectrum loading and testing the effectiveness of various fractographic methods. The panels represent complex testing models of aircraft wing parts. Three kinds of cyclic loading were used: constant amplitude loading, flight-by-flight type spectrum loading without marking and flight-by-flight spectrum with marking. Different methods were applied for fractographic reconstitution of fatigue crack growth: a) measurement of striation spacing, b) identification of beach marks, c) image textural analysis of SEM images of fatigue fracture surfaces (textural fractography) aimed at morphological features oriented in the direction of crack growth. The obtained crack growth curves enable the study of the influence of loading spectrum on crack growth kinetics and comparison of the different fractographic methods.

Keywords

metal fatigue, crack growth rate, fractographic reconstitution, constant amplitude loading, spectrum loading, integrally stiffened panel, high speed cutting, aircraft wing, striations, textural fractography

Authors

KUNZ, J.; KOVÁŘÍK, O.; LAUSCHMANN, H.; SIEGL, J.; AUGUSTIN, P.

RIV year

2010

Released

6. 6. 2010

Publisher

Elsevier Ltd.

ISBN

1877-7058

Periodical

Procedia Engineering

Year of study

2

Number

1

State

Kingdom of the Netherlands

Pages from

1711

Pages to

1720

Pages count

10

BibTex

@article{BUT50737,
  author="KUNZ, J. and KOVÁŘÍK, O. and LAUSCHMANN, H. and SIEGL, J. and AUGUSTIN, P.",
  title="Fractographic reconstitution of fatigue crack growth in integrally stiffened panels",
  journal="Procedia Engineering",
  year="2010",
  volume="2",
  number="1",
  pages="1711--1720",
  issn="1877-7058"
}