Publication detail
Small fatigue crack growth in aluminium alloy EN AW-6082/T6
LIŠKUTÍN, P. JÍŠA, D. KRUML, T. POLÁK, J.
Czech title
Šíření krátkých únavových trhlin v hliníkové slitině EN AW-6082/T6
English title
Small fatigue crack growth in aluminium alloy EN AW-6082/T6
Type
journal article - other
Language
en
Original abstract
The kinetics of small fatigue crack growth at room temperature was measured by a direct observation of the shallow notch on a cylindrical specimen. The growth of the crack was measured within the range of half surface crack length from ~10 micrometers up to ~2 mm. A linear dependence between the crack growth rate and the crack length, observed in case of steels, was confirmed to be valid in the aluminium 6082/T6 alloy, too. The crack growth coefficient kg increases with plastic strain amplitude; this dependence is well described by a power law. The fatigue life prediction based on the crack growth measurements is compared with the Manson-Coffin law.
Czech abstract
Sledána byla kinetika šíření krátkých únavových trhlin vznikajících v mělkém vrubu na válcových vzorcích vyrobených z hliníkové slitiny EN AW-6082/T6. Šíření trhlin bylo měřeno v rozmezí délek cca 10 micrometrů až 2 mm. Byla potvrzena lineární závislost rychlosti šíření trhliny a délky trhliny.
English abstract
The kinetics of small fatigue crack growth at room temperature was measured by a direct observation of the shallow notch on a cylindrical specimen. The growth of the crack was measured within the range of half surface crack length from ~10 micrometers up to ~2 mm. A linear dependence between the crack growth rate and the crack length, observed in case of steels, was confirmed to be valid in the aluminium 6082/T6 alloy, too. The crack growth coefficient kg increases with plastic strain amplitude; this dependence is well described by a power law. The fatigue life prediction based on the crack growth measurements is compared with the Manson-Coffin law.
Keywords in Czech
slitina hliníku, krátká únavová trhlina, rychlost šíření trhliny, nukleace trhliny
Keywords in English
aluminium alloy, small fatigue crack, crack crowth rate, crack nucleation
RIV year
2010
Released
01.08.2010
Publisher
Elsevier
Location
London
ISSN
0142-1123
Journal
INTERNATIONAL JOURNAL OF FATIGUE
Volume
32
Number
12
Pages from–to
1913–1920
Pages count
8
BIBTEX
@article{BUT49753,
author="Petr {Liškutín} and David {Jíša} and Tomáš {Kruml} and Jaroslav {Polák},
title="Small fatigue crack growth in aluminium alloy EN AW-6082/T6",
journal="INTERNATIONAL JOURNAL OF FATIGUE",
year="2010",
volume="32",
number="12",
month="August",
pages="1913--1920",
publisher="Elsevier",
address="London",
issn="0142-1123"
}