Publication result detail

The length parameter for gigacycle fatigue life predictions of notched specimens made of 304L steel

KOZÁKOVÁ, K.; KLUSÁK, J.; FINTOVÁ, S.

Original Title

The length parameter for gigacycle fatigue life predictions of notched specimens made of 304L steel

English Title

The length parameter for gigacycle fatigue life predictions of notched specimens made of 304L steel

Type

WoS Article

Original Abstract

In this paper, the fatigue data of smooth and notched specimens are evaluated using the method based on the theory of critical distances. This method is suitable for predictions of the fatigue lifetime of notched specimens using the axial stress distributions, the length parameter, and experimental data measured on smooth specimens. The critical length parameter lcr is determined from the relationship between two fatigue curves (one generated by testing smooth specimens and the other generated by testing specimens with a model notch). Experimental fatigue data are obtained using an ultrasonic fatigue pulsator at a frequency of 20 kHz and a load stress ratio R = -1. The paper describes the dependence of the critical length parameter for different notch radii on the number of cycles to fracture, as well as on the applied stress amplitude. The obtained results prove the possibility of using the critical length parameter for fatigue life prediction of notched specimens.

English abstract

In this paper, the fatigue data of smooth and notched specimens are evaluated using the method based on the theory of critical distances. This method is suitable for predictions of the fatigue lifetime of notched specimens using the axial stress distributions, the length parameter, and experimental data measured on smooth specimens. The critical length parameter lcr is determined from the relationship between two fatigue curves (one generated by testing smooth specimens and the other generated by testing specimens with a model notch). Experimental fatigue data are obtained using an ultrasonic fatigue pulsator at a frequency of 20 kHz and a load stress ratio R = -1. The paper describes the dependence of the critical length parameter for different notch radii on the number of cycles to fracture, as well as on the applied stress amplitude. The obtained results prove the possibility of using the critical length parameter for fatigue life prediction of notched specimens.

Keywords

Notches; Theory of critical distances; Ultrasonic pulsator; Critical length parameter; Averaging distance

Key words in English

Notches; Theory of critical distances; Ultrasonic pulsator; Critical length parameter; Averaging distance

Authors

KOZÁKOVÁ, K.; KLUSÁK, J.; FINTOVÁ, S.

RIV year

2025

Released

31.01.2024

Publisher

ELSEVIER SCI LTD

Location

London

ISBN

0142-1123

Periodical

International Journal of Fatigue

Volume

178

Number

107980

State

United Kingdom of Great Britain and Northern Ireland

Pages count

10

URL

https://www.sciencedirect.com/science/article/pii/S0142112323004814?via%3Dihub

BibTex

@article{BUT193828,
  author="Kamila {Kozáková} and Jan {Klusák} and Stanislava {Fintová}",
  title="The length parameter for gigacycle fatigue life predictions of notched specimens made of 304L steel",
  journal="International Journal of Fatigue",
  year="2024",
  volume="178",
  number="107980",
  pages="10",
  doi="10.1016/j.ijfatigue.2023.107980",
  issn="0142-1123",
  url="https://www.sciencedirect.com/science/article/pii/S0142112323004814?via%3Dihub"
}