Initiation of stage i fatigue cracks – experiments and models

Polák, Jaroslav; Man, Jiří

doi:https://dx.doi.org/10.1016/j.proeng.2015.02.047

Number of the records: 1

Initiation of stage i fatigue cracks – experiments and models

1.

SYSNO ASEP	0450281
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	Initiation of stage i fatigue cracks – experiments and models
Author(s)	Polák, Jaroslav (UFM-A)_{RID, ORCID} Man, Jiří (UFM-A)_{RID, ORCID}
Number of authors	2
Source Title	International Conference on Material and Component Performance under Variable Amplitude Loading, C. - Amsterdam : Elsevier Ltd, 2015 / Papuga J. ; Ružička M. - ISSN 1877-7058
Pages	s. 386-394
Number of pages	9 s.
Publication form	Print - P
Action	VAL 2015 - International Conference on Material and Component Performance under Variable Amplitude Loading
Event date	23.03.2015-26.03.2015
VEvent location	Praha
Country	CZ - Czech Republic
Event type	WRD
Language	eng - English
Country	NL - Netherlands
Keywords	crack initiation ; persistent slip band ; point defects ; extrusions ; intrusions
Subject RIV	JL - Materials Fatigue, Friction Mechanics
R&D Projects	GA13-23652S GA ČR - Czech Science Foundation (CSF)
Institutional support	UFM-A - RVO:68081723
UT WOS	000380492500047
EID SCOPUS	84925729227
DOI	10.1016/j.proeng.2015.02.047
Annotation	Early fatigue damage has been studied in a number of model and structural polycrystalline materials using modern experimental techniques. Early initiation of fatigue cracks was found to be related to the localization of the cyclic plastic strain into persistent slip bands during cyclic loading. Internal dislocation structure of the persistent slip bands and also the evolution of the surface relief as surface persistent slip markings are documented. The model of the surface relief formation describing the formation of extrusions and intrusions is briefly described. The intrusions representing sharp surface crack-like defects play the principal role in the initiation of fatigue cracks.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2016

Number of the records: 1