Detail publikace

On the Mechanism of Factory-Roof Formation

POKLUDA, J. SLÁMEČKA, K. ŠANDERA, P.

Originální název

On the Mechanism of Factory-Roof Formation

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

The investigated factory-roof (F-R) patterns were produced by cyclic torsion loading of V-notched cylindrical specimens made of the high-strength low-alloy steel. A three-dimensional model of the F-R pattern was constructed by means of the stereophotogrammetry. This allowed us to recognize the geometrical proportions as well as to understand the basic geometrical rules of its formation. The theoretical analysis revealed that the F-R initiates by elementary mode I branches at the front of semi-elliptical surface cracks. The exact positions of such branches can be analytically determined in terms of the maximum synergy of mode II and mode III loadings. An increasing density of semi-elliptical cracks initiated on the surface results in the refinement and the size reduction of F-R patterns. This effect can, together with strong wear damage, explain the fact that the F-R patterns are usually not observed in the low-cycle fatigue region.

Klíčová slova

factory roofs; fatigue; torsion; V-notch

Autoři

POKLUDA, J.; SLÁMEČKA, K.; ŠANDERA, P.

Rok RIV

2009

Vydáno

1. 10. 2009

Nakladatel

University of Parma

Místo

Vicenza, Italy

ISBN

0000000000000

Kniha

Crack Paths

Strany od

155

Strany do

166

Strany počet

12

BibTex

@inproceedings{BUT30037,
  author="Jaroslav {Pokluda} and Karel {Slámečka} and Pavel {Šandera}",
  title="On the Mechanism of Factory-Roof Formation",
  booktitle="Crack Paths",
  year="2009",
  pages="155--166",
  publisher="University of Parma",
  address="Vicenza, Italy",
  isbn="0000000000000"
}