Publication detail
The Reference Crack Growth Rate: An Unifying Concept for Fatigue under Variable Amplitude Loading
LAUSCHMANN, H. AUGUSTIN, P. KOVÁŘÍK, O. ŠIŠKA, F.
Czech title
Referenční rychlost šíření trhliny: jednotící koncept pro únavu při proměnném průběhu zatěžování
English title
The Reference Crack Growth Rate: An Unifying Concept for Fatigue under Variable Amplitude Loading
Type
conference paper
Language
en
Original abstract
A new concept of reference crack growth rate (RCGR) was proposed to cover all fatigue cracks regardless of the type of loading. The general idea has got a practical scope within textural fractography. The first suggestion of RCGR was based on cycle-by-cycle crack growth description. However, RCGR may be estimated directly from images of fracture surfaces. Both approaches are demonstrated in application – fractographical reconstitution of crack growth process in aluminium alloy. Two pairs of CCT specimen and panel were loaded by constant cycle and a flight spectrum, respectively. Common morphologic features of all fracture surfaces were found that are closely related to RCGR.
Czech abstract
Nová koncepce referenční rychlosti šíření trhliny (RCGR) sjednocuje popis růstu trhliny bez ohledu na typ zatěžování. Metodami texturní fraktografie může být referenční rychlost odhadována přímo z obrazů lomových ploch.
English abstract
A new concept of reference crack growth rate (RCGR) was proposed to cover all fatigue cracks regardless of the type of loading. The general idea has got a practical scope within textural fractography. The first suggestion of RCGR was based on cycle-by-cycle crack growth description. However, RCGR may be estimated directly from images of fracture surfaces. Both approaches are demonstrated in application – fractographical reconstitution of crack growth process in aluminium alloy. Two pairs of CCT specimen and panel were loaded by constant cycle and a flight spectrum, respectively. Common morphologic features of all fracture surfaces were found that are closely related to RCGR.
Keywords in Czech
únava při proměnném průběhu zatěžování, referenční rychlost šíření trhliny, fraktografická rekonstrukce šíření trhliny, texturní analýza obrazu
Keywords in English
fatigue under variable cycle loading, reference crack growth rate, fractographical reconstitution of crack growth history, image textural analysis
RIV year
2009
Released
23.03.2009
Publisher
Deutscher Verband für Materialforschung und -prüfung
Location
Darmstadt
ISBN
978-3-00-027049-9
Book
Proceedings of the Second International Conference on Material and Component Performance under Variable Amplitude Loading
Pages from–to
271–280
Pages count
10
BIBTEX
@inproceedings{BUT32926,
author="Hynek {Lauschmann} and Petr {Augustin},
title="The Reference Crack Growth Rate: An Unifying Concept for Fatigue under Variable Amplitude Loading",
booktitle="Proceedings of the Second International Conference on Material and Component Performance under Variable Amplitude Loading",
year="2009",
month="March",
pages="271--280",
publisher="Deutscher Verband für Materialforschung und -prüfung",
address="Darmstadt",
isbn="978-3-00-027049-9"
}