Preliminary communication

The rate of stable crack growth (SCG) in automotive steels sheets

Ľ. Ambriško ; Technical University of Košice, Faculty of Mining, Ecology, Process Control and Geotechnology, Košice, Slovakia
M. Cehlár ; Technical University of Košice, Faculty of Mining, Ecology, Process Control and Geotechnology, Košice, Slovakia
D. Marasová ; Technical University of Košice, Faculty of Mining, Ecology, Process Control and Geotechnology, Košice, Slovakia

Abstract

The main aim of this paper is determining the stable crack growth (SCG) rate for automotive steel sheets. The SCG was monitored using the non-contact videoextensometry technique. CT (Compact Tension) specimens of three steel grades were loaded by eccentric tension under two loading conditions. The SCG characteristics including rate depend on steel grade, on the rolling direction as well as on the loading rate. Linear relation between the SCG rate and δ_R-curve slope was determined.

Keywords

steel; sheet; stable crack growth; rate; videoextensometry

Hrčak ID:

180993

URI

https://hrcak.srce.hr/180993

Publication date:

1.7.2017.

Visits: 1.285 *